From patchwork Thu Mar 14 23:26:20 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Christopherson X-Patchwork-Id: 13592952 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7BA2CC54E5D for ; Fri, 15 Mar 2024 00:32:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:Reply-To:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:From:Subject:Message-ID :References:Mime-Version:In-Reply-To:Date:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=lUtSDgDUeCEO1uo5IxKpAO8J1lv9WllMlywUhiExW74=; b=ImADwayjTDLTWm I2iSqHsEpWGuK7+DwnrR6QuJ3X7esdiMRphDtTCDXzib+VUk9kFKcBaYo8mWbboDS5ihBWH2UR/Pe oC5nSkZ7t7LhmYLkI/81wtkY9NBN/Fly7KPI3PY2TPnlkipzvVpDQ1WjEHLN4ZjP8ZwYKxOr6EFjn UdbHd6DrCTvC7MYH7vRCV8+RymerYle67jGaKeOQNoAXUikSMdbUbwVKvcdgNaAjzY4Sg6OZt/h4f xNlZ+rdwSbcbZsm6sh6/8e21d2M+tVz7XwvGdUk9zPC47IvwPZ8IGu9iAq9jISQWs6EbsZhfZNS+B gjsbHiK9bEWEeWfcFrNg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkvUR-0000000GAnc-2UHP; Fri, 15 Mar 2024 00:32:03 +0000 Received: from mail-pf1-f202.google.com ([209.85.210.202]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkuTG-0000000Fzr1-2qHS for linux-arm-kernel@lists.infradead.org; Thu, 14 Mar 2024 23:27:05 +0000 Received: by mail-pf1-f202.google.com with SMTP id d2e1a72fcca58-6e6b6de7383so1364615b3a.1 for ; Thu, 14 Mar 2024 16:26:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1710458802; x=1711063602; darn=lists.infradead.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=mD7YpdXIs+PmNHJvwuzZnTphxdu0SDGnH/vkr1UjjVA=; b=zXfpAucxwj3/jH10WnezsOmO5lBXtLksCb+EPl6iNXtPrIug4SesSYOvxd2+hM/VX6 vHyKoifjxkhzOZ+hWKs48AbUkqr802vCHj1II6DPBZ1kKeRqCy/+nqtkcg/0U6ccV+xT 44jVzW/rRi05s3pXAD9yLs8SUZ4fTGqmmzYBCHQYY0pYu9xg/fq8vEofx/xdC2HMz5MW stCscg0OGbVHW4SZ8THiTUOo5EadPCgk7OLhSwziurUtD9aNFvYi4Cf2mNas6nm+H/r5 RGcfxPxCiyy/zajDoTvvPbyldriGWR8isjRMFMSII6f6Z3DbX50an/mbrzwMuOV0Y2SC npNg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710458802; x=1711063602; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=mD7YpdXIs+PmNHJvwuzZnTphxdu0SDGnH/vkr1UjjVA=; b=VPpfQsMkYsCXDeDTVpB5fiI5/uQLLf4acZ7I2qYOFQnk3g5qt5B6kxRVa5AHIG+tJW R1FvF5hP9HGsJ8K+/IToxQNUAtVKdHzpNl8Ez27z+n5EURNdCHaKkNxA3vmzNP3OgIPW T3t6LC0SLhf3pMrTDPjxIU6uFRuLO4dJj+WWHz0sdjV0WYy7iC7DZXsudK5XqB+MeoSZ BagD7c5akxaEG/vOFjuD4+n8aVpCP+u1VGrT57iA1imKvXB3UnN/wPZMwtZbi9zkQH5C u12JWqYpwQHwLXVcVywAj458XqNbYJEKTYi7VRbAY0HjHJ0IsHfM22elCgprryXQPKhN PACg== X-Gm-Message-State: AOJu0YwlNrK0eWBW718DDfc1aXm34luLJ/yYI8OTD46nbn9CrlgNgp9X k9GG13aTb999C5u0yVa9sMGFtuuHSGQlDDzaXG/P/r3netY0m2oFbOIFqVKmzAgAFpuJBNnm78C xvQ== X-Google-Smtp-Source: AGHT+IFj40cZH8qyWHT4oJdR+z51R20Y0862mUkx6SbxiEGW8rFGRWZ0aP3Ao8hOW0/02zedh3Hg1GSBeHE= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a05:6a00:2d91:b0:6e6:9ac5:269 with SMTP id fb17-20020a056a002d9100b006e69ac50269mr130375pfb.1.1710458801729; Thu, 14 Mar 2024 16:26:41 -0700 (PDT) Date: Thu, 14 Mar 2024 16:26:20 -0700 In-Reply-To: <20240314232637.2538648-1-seanjc@google.com> Mime-Version: 1.0 References: <20240314232637.2538648-1-seanjc@google.com> X-Mailer: git-send-email 2.44.0.291.gc1ea87d7ee-goog Message-ID: <20240314232637.2538648-2-seanjc@google.com> Subject: [PATCH 01/18] Revert "kvm: selftests: move base kvm_util.h declarations to kvm_util_base.h" From: Sean Christopherson To: Marc Zyngier , Oliver Upton , Paolo Bonzini , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Sean Christopherson , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Ackerley Tng X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240314_162647_153144_49C77E81 X-CRM114-Status: GOOD ( 20.93 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Sean Christopherson Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Effectively revert the movement of code from kvm_util.h => kvm_util_base.h, as the TL;DR of the justification for the move was to avoid #idefs and/or circular dependencies between what ended up being ucall_common.h and what was (and now again, is), kvm_util.h. But avoiding #ifdef and circular includes is trivial: don't do that. The cost of removing kvm_util_base.h is a few extra includes of ucall_common.h, but that cost is practically nothing. On the other hand, having a "base" version of a header that is really just the header itself is confusing, and makes it weird/hard to choose names for headers that actually are "base" headers, e.g. to hold core KVM selftests typedefs. For all intents and purposes, this reverts commit 7d9a662ed9f0403e7b94940dceb81552b8edb931. Signed-off-by: Sean Christopherson Reviewed-by: Ackerley Tng --- .../selftests/kvm/aarch64/arch_timer.c | 1 + tools/testing/selftests/kvm/arch_timer.c | 1 + .../selftests/kvm/demand_paging_test.c | 1 + .../selftests/kvm/dirty_log_perf_test.c | 1 + tools/testing/selftests/kvm/dirty_log_test.c | 1 + .../testing/selftests/kvm/guest_memfd_test.c | 2 +- .../testing/selftests/kvm/guest_print_test.c | 1 + .../selftests/kvm/include/aarch64/processor.h | 2 + .../selftests/kvm/include/aarch64/ucall.h | 2 +- .../testing/selftests/kvm/include/kvm_util.h | 1128 +++++++++++++++- .../selftests/kvm/include/kvm_util_base.h | 1135 ----------------- .../selftests/kvm/include/s390x/ucall.h | 2 +- .../selftests/kvm/include/x86_64/processor.h | 3 +- .../selftests/kvm/include/x86_64/ucall.h | 2 +- .../selftests/kvm/kvm_page_table_test.c | 1 + .../selftests/kvm/lib/aarch64/processor.c | 2 + tools/testing/selftests/kvm/lib/kvm_util.c | 1 + tools/testing/selftests/kvm/lib/memstress.c | 1 + .../selftests/kvm/lib/riscv/processor.c | 1 + .../testing/selftests/kvm/lib/ucall_common.c | 5 +- .../testing/selftests/kvm/riscv/arch_timer.c | 1 + tools/testing/selftests/kvm/rseq_test.c | 1 + tools/testing/selftests/kvm/s390x/cmma_test.c | 1 + tools/testing/selftests/kvm/s390x/memop.c | 1 + tools/testing/selftests/kvm/s390x/tprot.c | 1 + tools/testing/selftests/kvm/steal_time.c | 1 + .../x86_64/dirty_log_page_splitting_test.c | 1 + .../x86_64/exit_on_emulation_failure_test.c | 2 +- .../kvm/x86_64/ucna_injection_test.c | 1 - 29 files changed, 1156 insertions(+), 1147 deletions(-) delete mode 100644 tools/testing/selftests/kvm/include/kvm_util_base.h diff --git a/tools/testing/selftests/kvm/aarch64/arch_timer.c b/tools/testing/selftests/kvm/aarch64/arch_timer.c index ddba2c2fb5de..ee83b2413da8 100644 --- a/tools/testing/selftests/kvm/aarch64/arch_timer.c +++ b/tools/testing/selftests/kvm/aarch64/arch_timer.c @@ -12,6 +12,7 @@ #include "gic.h" #include "processor.h" #include "timer_test.h" +#include "ucall_common.h" #include "vgic.h" #define GICD_BASE_GPA 0x8000000ULL diff --git a/tools/testing/selftests/kvm/arch_timer.c b/tools/testing/selftests/kvm/arch_timer.c index ae1f1a6d8312..40cb6c1bec0a 100644 --- a/tools/testing/selftests/kvm/arch_timer.c +++ b/tools/testing/selftests/kvm/arch_timer.c @@ -29,6 +29,7 @@ #include #include "timer_test.h" +#include "ucall_common.h" struct test_args test_args = { .nr_vcpus = NR_VCPUS_DEF, diff --git a/tools/testing/selftests/kvm/demand_paging_test.c b/tools/testing/selftests/kvm/demand_paging_test.c index bf3609f71854..a36227731564 100644 --- a/tools/testing/selftests/kvm/demand_paging_test.c +++ b/tools/testing/selftests/kvm/demand_paging_test.c @@ -22,6 +22,7 @@ #include "test_util.h" #include "memstress.h" #include "guest_modes.h" +#include "ucall_common.h" #include "userfaultfd_util.h" #ifdef __NR_userfaultfd diff --git a/tools/testing/selftests/kvm/dirty_log_perf_test.c b/tools/testing/selftests/kvm/dirty_log_perf_test.c index 504f6fe980e8..f0d3ccdb023c 100644 --- a/tools/testing/selftests/kvm/dirty_log_perf_test.c +++ b/tools/testing/selftests/kvm/dirty_log_perf_test.c @@ -18,6 +18,7 @@ #include "test_util.h" #include "memstress.h" #include "guest_modes.h" +#include "ucall_common.h" #ifdef __aarch64__ #include "aarch64/vgic.h" diff --git a/tools/testing/selftests/kvm/dirty_log_test.c b/tools/testing/selftests/kvm/dirty_log_test.c index eaad5b20854c..d95120f9dc40 100644 --- a/tools/testing/selftests/kvm/dirty_log_test.c +++ b/tools/testing/selftests/kvm/dirty_log_test.c @@ -23,6 +23,7 @@ #include "test_util.h" #include "guest_modes.h" #include "processor.h" +#include "ucall_common.h" #define DIRTY_MEM_BITS 30 /* 1G */ #define PAGE_SHIFT_4K 12 diff --git a/tools/testing/selftests/kvm/guest_memfd_test.c b/tools/testing/selftests/kvm/guest_memfd_test.c index 92eae206baa6..38320de686f6 100644 --- a/tools/testing/selftests/kvm/guest_memfd_test.c +++ b/tools/testing/selftests/kvm/guest_memfd_test.c @@ -19,8 +19,8 @@ #include #include +#include "kvm_util.h" #include "test_util.h" -#include "kvm_util_base.h" static void test_file_read_write(int fd) { diff --git a/tools/testing/selftests/kvm/guest_print_test.c b/tools/testing/selftests/kvm/guest_print_test.c index 3502caa3590c..8092c2d0f5d6 100644 --- a/tools/testing/selftests/kvm/guest_print_test.c +++ b/tools/testing/selftests/kvm/guest_print_test.c @@ -13,6 +13,7 @@ #include "test_util.h" #include "kvm_util.h" #include "processor.h" +#include "ucall_common.h" struct guest_vals { uint64_t a; diff --git a/tools/testing/selftests/kvm/include/aarch64/processor.h b/tools/testing/selftests/kvm/include/aarch64/processor.h index 9e518b562827..1814af7d8567 100644 --- a/tools/testing/selftests/kvm/include/aarch64/processor.h +++ b/tools/testing/selftests/kvm/include/aarch64/processor.h @@ -8,6 +8,8 @@ #define SELFTEST_KVM_PROCESSOR_H #include "kvm_util.h" +#include "ucall_common.h" + #include #include #include diff --git a/tools/testing/selftests/kvm/include/aarch64/ucall.h b/tools/testing/selftests/kvm/include/aarch64/ucall.h index 4b68f37efd36..4ec801f37f00 100644 --- a/tools/testing/selftests/kvm/include/aarch64/ucall.h +++ b/tools/testing/selftests/kvm/include/aarch64/ucall.h @@ -2,7 +2,7 @@ #ifndef SELFTEST_KVM_UCALL_H #define SELFTEST_KVM_UCALL_H -#include "kvm_util_base.h" +#include "kvm_util.h" #define UCALL_EXIT_REASON KVM_EXIT_MMIO diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/testing/selftests/kvm/include/kvm_util.h index c9286811a4cb..95baee5142a7 100644 --- a/tools/testing/selftests/kvm/include/kvm_util.h +++ b/tools/testing/selftests/kvm/include/kvm_util.h @@ -1,13 +1,1133 @@ /* SPDX-License-Identifier: GPL-2.0-only */ /* - * tools/testing/selftests/kvm/include/kvm_util.h - * * Copyright (C) 2018, Google LLC. */ #ifndef SELFTEST_KVM_UTIL_H #define SELFTEST_KVM_UTIL_H -#include "kvm_util_base.h" -#include "ucall_common.h" +#include "test_util.h" + +#include +#include "linux/hashtable.h" +#include "linux/list.h" +#include +#include +#include "linux/rbtree.h" +#include + +#include +#include + +#include + +#include "kvm_util_arch.h" +#include "sparsebit.h" + +/* + * Provide a version of static_assert() that is guaranteed to have an optional + * message param. If _ISOC11_SOURCE is defined, glibc (/usr/include/assert.h) + * #undefs and #defines static_assert() as a direct alias to _Static_assert(), + * i.e. effectively makes the message mandatory. Many KVM selftests #define + * _GNU_SOURCE for various reasons, and _GNU_SOURCE implies _ISOC11_SOURCE. As + * a result, static_assert() behavior is non-deterministic and may or may not + * require a message depending on #include order. + */ +#define __kvm_static_assert(expr, msg, ...) _Static_assert(expr, msg) +#define kvm_static_assert(expr, ...) __kvm_static_assert(expr, ##__VA_ARGS__, #expr) + +#define KVM_DEV_PATH "/dev/kvm" +#define KVM_MAX_VCPUS 512 + +#define NSEC_PER_SEC 1000000000L + +typedef uint64_t vm_paddr_t; /* Virtual Machine (Guest) physical address */ +typedef uint64_t vm_vaddr_t; /* Virtual Machine (Guest) virtual address */ + +struct userspace_mem_region { + struct kvm_userspace_memory_region2 region; + struct sparsebit *unused_phy_pages; + struct sparsebit *protected_phy_pages; + int fd; + off_t offset; + enum vm_mem_backing_src_type backing_src_type; + void *host_mem; + void *host_alias; + void *mmap_start; + void *mmap_alias; + size_t mmap_size; + struct rb_node gpa_node; + struct rb_node hva_node; + struct hlist_node slot_node; +}; + +struct kvm_vcpu { + struct list_head list; + uint32_t id; + int fd; + struct kvm_vm *vm; + struct kvm_run *run; +#ifdef __x86_64__ + struct kvm_cpuid2 *cpuid; +#endif + struct kvm_dirty_gfn *dirty_gfns; + uint32_t fetch_index; + uint32_t dirty_gfns_count; +}; + +struct userspace_mem_regions { + struct rb_root gpa_tree; + struct rb_root hva_tree; + DECLARE_HASHTABLE(slot_hash, 9); +}; + +enum kvm_mem_region_type { + MEM_REGION_CODE, + MEM_REGION_DATA, + MEM_REGION_PT, + MEM_REGION_TEST_DATA, + NR_MEM_REGIONS, +}; + +struct kvm_vm { + int mode; + unsigned long type; + uint8_t subtype; + int kvm_fd; + int fd; + unsigned int pgtable_levels; + unsigned int page_size; + unsigned int page_shift; + unsigned int pa_bits; + unsigned int va_bits; + uint64_t max_gfn; + struct list_head vcpus; + struct userspace_mem_regions regions; + struct sparsebit *vpages_valid; + struct sparsebit *vpages_mapped; + bool has_irqchip; + bool pgd_created; + vm_paddr_t ucall_mmio_addr; + vm_paddr_t pgd; + vm_vaddr_t gdt; + vm_vaddr_t tss; + vm_vaddr_t idt; + vm_vaddr_t handlers; + uint32_t dirty_ring_size; + uint64_t gpa_tag_mask; + + struct kvm_vm_arch arch; + + /* Cache of information for binary stats interface */ + int stats_fd; + struct kvm_stats_header stats_header; + struct kvm_stats_desc *stats_desc; + + /* + * KVM region slots. These are the default memslots used by page + * allocators, e.g., lib/elf uses the memslots[MEM_REGION_CODE] + * memslot. + */ + uint32_t memslots[NR_MEM_REGIONS]; +}; + +struct vcpu_reg_sublist { + const char *name; + long capability; + int feature; + int feature_type; + bool finalize; + __u64 *regs; + __u64 regs_n; + __u64 *rejects_set; + __u64 rejects_set_n; + __u64 *skips_set; + __u64 skips_set_n; +}; + +struct vcpu_reg_list { + char *name; + struct vcpu_reg_sublist sublists[]; +}; + +#define for_each_sublist(c, s) \ + for ((s) = &(c)->sublists[0]; (s)->regs; ++(s)) + +#define kvm_for_each_vcpu(vm, i, vcpu) \ + for ((i) = 0; (i) <= (vm)->last_vcpu_id; (i)++) \ + if (!((vcpu) = vm->vcpus[i])) \ + continue; \ + else + +struct userspace_mem_region * +memslot2region(struct kvm_vm *vm, uint32_t memslot); + +static inline struct userspace_mem_region *vm_get_mem_region(struct kvm_vm *vm, + enum kvm_mem_region_type type) +{ + assert(type < NR_MEM_REGIONS); + return memslot2region(vm, vm->memslots[type]); +} + +/* Minimum allocated guest virtual and physical addresses */ +#define KVM_UTIL_MIN_VADDR 0x2000 +#define KVM_GUEST_PAGE_TABLE_MIN_PADDR 0x180000 + +#define DEFAULT_GUEST_STACK_VADDR_MIN 0xab6000 +#define DEFAULT_STACK_PGS 5 + +enum vm_guest_mode { + VM_MODE_P52V48_4K, + VM_MODE_P52V48_16K, + VM_MODE_P52V48_64K, + VM_MODE_P48V48_4K, + VM_MODE_P48V48_16K, + VM_MODE_P48V48_64K, + VM_MODE_P40V48_4K, + VM_MODE_P40V48_16K, + VM_MODE_P40V48_64K, + VM_MODE_PXXV48_4K, /* For 48bits VA but ANY bits PA */ + VM_MODE_P47V64_4K, + VM_MODE_P44V64_4K, + VM_MODE_P36V48_4K, + VM_MODE_P36V48_16K, + VM_MODE_P36V48_64K, + VM_MODE_P36V47_16K, + NUM_VM_MODES, +}; + +struct vm_shape { + uint32_t type; + uint8_t mode; + uint8_t subtype; + uint16_t padding; +}; + +kvm_static_assert(sizeof(struct vm_shape) == sizeof(uint64_t)); + +#define VM_TYPE_DEFAULT 0 + +#define VM_SHAPE(__mode) \ +({ \ + struct vm_shape shape = { \ + .mode = (__mode), \ + .type = VM_TYPE_DEFAULT \ + }; \ + \ + shape; \ +}) + +#if defined(__aarch64__) + +extern enum vm_guest_mode vm_mode_default; + +#define VM_MODE_DEFAULT vm_mode_default +#define MIN_PAGE_SHIFT 12U +#define ptes_per_page(page_size) ((page_size) / 8) + +#elif defined(__x86_64__) + +#define VM_MODE_DEFAULT VM_MODE_PXXV48_4K +#define MIN_PAGE_SHIFT 12U +#define ptes_per_page(page_size) ((page_size) / 8) + +#elif defined(__s390x__) + +#define VM_MODE_DEFAULT VM_MODE_P44V64_4K +#define MIN_PAGE_SHIFT 12U +#define ptes_per_page(page_size) ((page_size) / 16) + +#elif defined(__riscv) + +#if __riscv_xlen == 32 +#error "RISC-V 32-bit kvm selftests not supported" +#endif + +#define VM_MODE_DEFAULT VM_MODE_P40V48_4K +#define MIN_PAGE_SHIFT 12U +#define ptes_per_page(page_size) ((page_size) / 8) + +#endif + +#define VM_SHAPE_DEFAULT VM_SHAPE(VM_MODE_DEFAULT) + +#define MIN_PAGE_SIZE (1U << MIN_PAGE_SHIFT) +#define PTES_PER_MIN_PAGE ptes_per_page(MIN_PAGE_SIZE) + +struct vm_guest_mode_params { + unsigned int pa_bits; + unsigned int va_bits; + unsigned int page_size; + unsigned int page_shift; +}; +extern const struct vm_guest_mode_params vm_guest_mode_params[]; + +int open_path_or_exit(const char *path, int flags); +int open_kvm_dev_path_or_exit(void); + +bool get_kvm_param_bool(const char *param); +bool get_kvm_intel_param_bool(const char *param); +bool get_kvm_amd_param_bool(const char *param); + +int get_kvm_param_integer(const char *param); +int get_kvm_intel_param_integer(const char *param); +int get_kvm_amd_param_integer(const char *param); + +unsigned int kvm_check_cap(long cap); + +static inline bool kvm_has_cap(long cap) +{ + return kvm_check_cap(cap); +} + +#define __KVM_SYSCALL_ERROR(_name, _ret) \ + "%s failed, rc: %i errno: %i (%s)", (_name), (_ret), errno, strerror(errno) + +/* + * Use the "inner", double-underscore macro when reporting errors from within + * other macros so that the name of ioctl() and not its literal numeric value + * is printed on error. The "outer" macro is strongly preferred when reporting + * errors "directly", i.e. without an additional layer of macros, as it reduces + * the probability of passing in the wrong string. + */ +#define __KVM_IOCTL_ERROR(_name, _ret) __KVM_SYSCALL_ERROR(_name, _ret) +#define KVM_IOCTL_ERROR(_ioctl, _ret) __KVM_IOCTL_ERROR(#_ioctl, _ret) + +#define kvm_do_ioctl(fd, cmd, arg) \ +({ \ + kvm_static_assert(!_IOC_SIZE(cmd) || sizeof(*arg) == _IOC_SIZE(cmd)); \ + ioctl(fd, cmd, arg); \ +}) + +#define __kvm_ioctl(kvm_fd, cmd, arg) \ + kvm_do_ioctl(kvm_fd, cmd, arg) + +#define kvm_ioctl(kvm_fd, cmd, arg) \ +({ \ + int ret = __kvm_ioctl(kvm_fd, cmd, arg); \ + \ + TEST_ASSERT(!ret, __KVM_IOCTL_ERROR(#cmd, ret)); \ +}) + +static __always_inline void static_assert_is_vm(struct kvm_vm *vm) { } + +#define __vm_ioctl(vm, cmd, arg) \ +({ \ + static_assert_is_vm(vm); \ + kvm_do_ioctl((vm)->fd, cmd, arg); \ +}) + +/* + * Assert that a VM or vCPU ioctl() succeeded, with extra magic to detect if + * the ioctl() failed because KVM killed/bugged the VM. To detect a dead VM, + * probe KVM_CAP_USER_MEMORY, which (a) has been supported by KVM since before + * selftests existed and (b) should never outright fail, i.e. is supposed to + * return 0 or 1. If KVM kills a VM, KVM returns -EIO for all ioctl()s for the + * VM and its vCPUs, including KVM_CHECK_EXTENSION. + */ +#define __TEST_ASSERT_VM_VCPU_IOCTL(cond, name, ret, vm) \ +do { \ + int __errno = errno; \ + \ + static_assert_is_vm(vm); \ + \ + if (cond) \ + break; \ + \ + if (errno == EIO && \ + __vm_ioctl(vm, KVM_CHECK_EXTENSION, (void *)KVM_CAP_USER_MEMORY) < 0) { \ + TEST_ASSERT(errno == EIO, "KVM killed the VM, should return -EIO"); \ + TEST_FAIL("KVM killed/bugged the VM, check the kernel log for clues"); \ + } \ + errno = __errno; \ + TEST_ASSERT(cond, __KVM_IOCTL_ERROR(name, ret)); \ +} while (0) + +#define TEST_ASSERT_VM_VCPU_IOCTL(cond, cmd, ret, vm) \ + __TEST_ASSERT_VM_VCPU_IOCTL(cond, #cmd, ret, vm) + +#define vm_ioctl(vm, cmd, arg) \ +({ \ + int ret = __vm_ioctl(vm, cmd, arg); \ + \ + __TEST_ASSERT_VM_VCPU_IOCTL(!ret, #cmd, ret, vm); \ +}) + +static __always_inline void static_assert_is_vcpu(struct kvm_vcpu *vcpu) { } + +#define __vcpu_ioctl(vcpu, cmd, arg) \ +({ \ + static_assert_is_vcpu(vcpu); \ + kvm_do_ioctl((vcpu)->fd, cmd, arg); \ +}) + +#define vcpu_ioctl(vcpu, cmd, arg) \ +({ \ + int ret = __vcpu_ioctl(vcpu, cmd, arg); \ + \ + __TEST_ASSERT_VM_VCPU_IOCTL(!ret, #cmd, ret, (vcpu)->vm); \ +}) + +/* + * Looks up and returns the value corresponding to the capability + * (KVM_CAP_*) given by cap. + */ +static inline int vm_check_cap(struct kvm_vm *vm, long cap) +{ + int ret = __vm_ioctl(vm, KVM_CHECK_EXTENSION, (void *)cap); + + TEST_ASSERT_VM_VCPU_IOCTL(ret >= 0, KVM_CHECK_EXTENSION, ret, vm); + return ret; +} + +static inline int __vm_enable_cap(struct kvm_vm *vm, uint32_t cap, uint64_t arg0) +{ + struct kvm_enable_cap enable_cap = { .cap = cap, .args = { arg0 } }; + + return __vm_ioctl(vm, KVM_ENABLE_CAP, &enable_cap); +} +static inline void vm_enable_cap(struct kvm_vm *vm, uint32_t cap, uint64_t arg0) +{ + struct kvm_enable_cap enable_cap = { .cap = cap, .args = { arg0 } }; + + vm_ioctl(vm, KVM_ENABLE_CAP, &enable_cap); +} + +static inline void vm_set_memory_attributes(struct kvm_vm *vm, uint64_t gpa, + uint64_t size, uint64_t attributes) +{ + struct kvm_memory_attributes attr = { + .attributes = attributes, + .address = gpa, + .size = size, + .flags = 0, + }; + + /* + * KVM_SET_MEMORY_ATTRIBUTES overwrites _all_ attributes. These flows + * need significant enhancements to support multiple attributes. + */ + TEST_ASSERT(!attributes || attributes == KVM_MEMORY_ATTRIBUTE_PRIVATE, + "Update me to support multiple attributes!"); + + vm_ioctl(vm, KVM_SET_MEMORY_ATTRIBUTES, &attr); +} + + +static inline void vm_mem_set_private(struct kvm_vm *vm, uint64_t gpa, + uint64_t size) +{ + vm_set_memory_attributes(vm, gpa, size, KVM_MEMORY_ATTRIBUTE_PRIVATE); +} + +static inline void vm_mem_set_shared(struct kvm_vm *vm, uint64_t gpa, + uint64_t size) +{ + vm_set_memory_attributes(vm, gpa, size, 0); +} + +void vm_guest_mem_fallocate(struct kvm_vm *vm, uint64_t gpa, uint64_t size, + bool punch_hole); + +static inline void vm_guest_mem_punch_hole(struct kvm_vm *vm, uint64_t gpa, + uint64_t size) +{ + vm_guest_mem_fallocate(vm, gpa, size, true); +} + +static inline void vm_guest_mem_allocate(struct kvm_vm *vm, uint64_t gpa, + uint64_t size) +{ + vm_guest_mem_fallocate(vm, gpa, size, false); +} + +void vm_enable_dirty_ring(struct kvm_vm *vm, uint32_t ring_size); +const char *vm_guest_mode_string(uint32_t i); + +void kvm_vm_free(struct kvm_vm *vmp); +void kvm_vm_restart(struct kvm_vm *vmp); +void kvm_vm_release(struct kvm_vm *vmp); +int kvm_memcmp_hva_gva(void *hva, struct kvm_vm *vm, const vm_vaddr_t gva, + size_t len); +void kvm_vm_elf_load(struct kvm_vm *vm, const char *filename); +int kvm_memfd_alloc(size_t size, bool hugepages); + +void vm_dump(FILE *stream, struct kvm_vm *vm, uint8_t indent); + +static inline void kvm_vm_get_dirty_log(struct kvm_vm *vm, int slot, void *log) +{ + struct kvm_dirty_log args = { .dirty_bitmap = log, .slot = slot }; + + vm_ioctl(vm, KVM_GET_DIRTY_LOG, &args); +} + +static inline void kvm_vm_clear_dirty_log(struct kvm_vm *vm, int slot, void *log, + uint64_t first_page, uint32_t num_pages) +{ + struct kvm_clear_dirty_log args = { + .dirty_bitmap = log, + .slot = slot, + .first_page = first_page, + .num_pages = num_pages + }; + + vm_ioctl(vm, KVM_CLEAR_DIRTY_LOG, &args); +} + +static inline uint32_t kvm_vm_reset_dirty_ring(struct kvm_vm *vm) +{ + return __vm_ioctl(vm, KVM_RESET_DIRTY_RINGS, NULL); +} + +static inline int vm_get_stats_fd(struct kvm_vm *vm) +{ + int fd = __vm_ioctl(vm, KVM_GET_STATS_FD, NULL); + + TEST_ASSERT_VM_VCPU_IOCTL(fd >= 0, KVM_GET_STATS_FD, fd, vm); + return fd; +} + +static inline void read_stats_header(int stats_fd, struct kvm_stats_header *header) +{ + ssize_t ret; + + ret = pread(stats_fd, header, sizeof(*header), 0); + TEST_ASSERT(ret == sizeof(*header), + "Failed to read '%lu' header bytes, ret = '%ld'", + sizeof(*header), ret); +} + +struct kvm_stats_desc *read_stats_descriptors(int stats_fd, + struct kvm_stats_header *header); + +static inline ssize_t get_stats_descriptor_size(struct kvm_stats_header *header) +{ + /* + * The base size of the descriptor is defined by KVM's ABI, but the + * size of the name field is variable, as far as KVM's ABI is + * concerned. For a given instance of KVM, the name field is the same + * size for all stats and is provided in the overall stats header. + */ + return sizeof(struct kvm_stats_desc) + header->name_size; +} + +static inline struct kvm_stats_desc *get_stats_descriptor(struct kvm_stats_desc *stats, + int index, + struct kvm_stats_header *header) +{ + /* + * Note, size_desc includes the size of the name field, which is + * variable. i.e. this is NOT equivalent to &stats_desc[i]. + */ + return (void *)stats + index * get_stats_descriptor_size(header); +} + +void read_stat_data(int stats_fd, struct kvm_stats_header *header, + struct kvm_stats_desc *desc, uint64_t *data, + size_t max_elements); + +void __vm_get_stat(struct kvm_vm *vm, const char *stat_name, uint64_t *data, + size_t max_elements); + +static inline uint64_t vm_get_stat(struct kvm_vm *vm, const char *stat_name) +{ + uint64_t data; + + __vm_get_stat(vm, stat_name, &data, 1); + return data; +} + +void vm_create_irqchip(struct kvm_vm *vm); + +static inline int __vm_create_guest_memfd(struct kvm_vm *vm, uint64_t size, + uint64_t flags) +{ + struct kvm_create_guest_memfd guest_memfd = { + .size = size, + .flags = flags, + }; + + return __vm_ioctl(vm, KVM_CREATE_GUEST_MEMFD, &guest_memfd); +} + +static inline int vm_create_guest_memfd(struct kvm_vm *vm, uint64_t size, + uint64_t flags) +{ + int fd = __vm_create_guest_memfd(vm, size, flags); + + TEST_ASSERT(fd >= 0, KVM_IOCTL_ERROR(KVM_CREATE_GUEST_MEMFD, fd)); + return fd; +} + +void vm_set_user_memory_region(struct kvm_vm *vm, uint32_t slot, uint32_t flags, + uint64_t gpa, uint64_t size, void *hva); +int __vm_set_user_memory_region(struct kvm_vm *vm, uint32_t slot, uint32_t flags, + uint64_t gpa, uint64_t size, void *hva); +void vm_set_user_memory_region2(struct kvm_vm *vm, uint32_t slot, uint32_t flags, + uint64_t gpa, uint64_t size, void *hva, + uint32_t guest_memfd, uint64_t guest_memfd_offset); +int __vm_set_user_memory_region2(struct kvm_vm *vm, uint32_t slot, uint32_t flags, + uint64_t gpa, uint64_t size, void *hva, + uint32_t guest_memfd, uint64_t guest_memfd_offset); + +void vm_userspace_mem_region_add(struct kvm_vm *vm, + enum vm_mem_backing_src_type src_type, + uint64_t guest_paddr, uint32_t slot, uint64_t npages, + uint32_t flags); +void vm_mem_add(struct kvm_vm *vm, enum vm_mem_backing_src_type src_type, + uint64_t guest_paddr, uint32_t slot, uint64_t npages, + uint32_t flags, int guest_memfd_fd, uint64_t guest_memfd_offset); + +#ifndef vm_arch_has_protected_memory +static inline bool vm_arch_has_protected_memory(struct kvm_vm *vm) +{ + return false; +} +#endif + +void vm_mem_region_set_flags(struct kvm_vm *vm, uint32_t slot, uint32_t flags); +void vm_mem_region_move(struct kvm_vm *vm, uint32_t slot, uint64_t new_gpa); +void vm_mem_region_delete(struct kvm_vm *vm, uint32_t slot); +struct kvm_vcpu *__vm_vcpu_add(struct kvm_vm *vm, uint32_t vcpu_id); +void vm_populate_vaddr_bitmap(struct kvm_vm *vm); +vm_vaddr_t vm_vaddr_unused_gap(struct kvm_vm *vm, size_t sz, vm_vaddr_t vaddr_min); +vm_vaddr_t vm_vaddr_alloc(struct kvm_vm *vm, size_t sz, vm_vaddr_t vaddr_min); +vm_vaddr_t __vm_vaddr_alloc(struct kvm_vm *vm, size_t sz, vm_vaddr_t vaddr_min, + enum kvm_mem_region_type type); +vm_vaddr_t vm_vaddr_alloc_shared(struct kvm_vm *vm, size_t sz, + vm_vaddr_t vaddr_min, + enum kvm_mem_region_type type); +vm_vaddr_t vm_vaddr_alloc_pages(struct kvm_vm *vm, int nr_pages); +vm_vaddr_t __vm_vaddr_alloc_page(struct kvm_vm *vm, + enum kvm_mem_region_type type); +vm_vaddr_t vm_vaddr_alloc_page(struct kvm_vm *vm); + +void virt_map(struct kvm_vm *vm, uint64_t vaddr, uint64_t paddr, + unsigned int npages); +void *addr_gpa2hva(struct kvm_vm *vm, vm_paddr_t gpa); +void *addr_gva2hva(struct kvm_vm *vm, vm_vaddr_t gva); +vm_paddr_t addr_hva2gpa(struct kvm_vm *vm, void *hva); +void *addr_gpa2alias(struct kvm_vm *vm, vm_paddr_t gpa); + + +static inline vm_paddr_t vm_untag_gpa(struct kvm_vm *vm, vm_paddr_t gpa) +{ + return gpa & ~vm->gpa_tag_mask; +} + +void vcpu_run(struct kvm_vcpu *vcpu); +int _vcpu_run(struct kvm_vcpu *vcpu); + +static inline int __vcpu_run(struct kvm_vcpu *vcpu) +{ + return __vcpu_ioctl(vcpu, KVM_RUN, NULL); +} + +void vcpu_run_complete_io(struct kvm_vcpu *vcpu); +struct kvm_reg_list *vcpu_get_reg_list(struct kvm_vcpu *vcpu); + +static inline void vcpu_enable_cap(struct kvm_vcpu *vcpu, uint32_t cap, + uint64_t arg0) +{ + struct kvm_enable_cap enable_cap = { .cap = cap, .args = { arg0 } }; + + vcpu_ioctl(vcpu, KVM_ENABLE_CAP, &enable_cap); +} + +static inline void vcpu_guest_debug_set(struct kvm_vcpu *vcpu, + struct kvm_guest_debug *debug) +{ + vcpu_ioctl(vcpu, KVM_SET_GUEST_DEBUG, debug); +} + +static inline void vcpu_mp_state_get(struct kvm_vcpu *vcpu, + struct kvm_mp_state *mp_state) +{ + vcpu_ioctl(vcpu, KVM_GET_MP_STATE, mp_state); +} +static inline void vcpu_mp_state_set(struct kvm_vcpu *vcpu, + struct kvm_mp_state *mp_state) +{ + vcpu_ioctl(vcpu, KVM_SET_MP_STATE, mp_state); +} + +static inline void vcpu_regs_get(struct kvm_vcpu *vcpu, struct kvm_regs *regs) +{ + vcpu_ioctl(vcpu, KVM_GET_REGS, regs); +} + +static inline void vcpu_regs_set(struct kvm_vcpu *vcpu, struct kvm_regs *regs) +{ + vcpu_ioctl(vcpu, KVM_SET_REGS, regs); +} +static inline void vcpu_sregs_get(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs) +{ + vcpu_ioctl(vcpu, KVM_GET_SREGS, sregs); + +} +static inline void vcpu_sregs_set(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs) +{ + vcpu_ioctl(vcpu, KVM_SET_SREGS, sregs); +} +static inline int _vcpu_sregs_set(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs) +{ + return __vcpu_ioctl(vcpu, KVM_SET_SREGS, sregs); +} +static inline void vcpu_fpu_get(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) +{ + vcpu_ioctl(vcpu, KVM_GET_FPU, fpu); +} +static inline void vcpu_fpu_set(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) +{ + vcpu_ioctl(vcpu, KVM_SET_FPU, fpu); +} + +static inline int __vcpu_get_reg(struct kvm_vcpu *vcpu, uint64_t id, void *addr) +{ + struct kvm_one_reg reg = { .id = id, .addr = (uint64_t)addr }; + + return __vcpu_ioctl(vcpu, KVM_GET_ONE_REG, ®); +} +static inline int __vcpu_set_reg(struct kvm_vcpu *vcpu, uint64_t id, uint64_t val) +{ + struct kvm_one_reg reg = { .id = id, .addr = (uint64_t)&val }; + + return __vcpu_ioctl(vcpu, KVM_SET_ONE_REG, ®); +} +static inline void vcpu_get_reg(struct kvm_vcpu *vcpu, uint64_t id, void *addr) +{ + struct kvm_one_reg reg = { .id = id, .addr = (uint64_t)addr }; + + vcpu_ioctl(vcpu, KVM_GET_ONE_REG, ®); +} +static inline void vcpu_set_reg(struct kvm_vcpu *vcpu, uint64_t id, uint64_t val) +{ + struct kvm_one_reg reg = { .id = id, .addr = (uint64_t)&val }; + + vcpu_ioctl(vcpu, KVM_SET_ONE_REG, ®); +} + +#ifdef __KVM_HAVE_VCPU_EVENTS +static inline void vcpu_events_get(struct kvm_vcpu *vcpu, + struct kvm_vcpu_events *events) +{ + vcpu_ioctl(vcpu, KVM_GET_VCPU_EVENTS, events); +} +static inline void vcpu_events_set(struct kvm_vcpu *vcpu, + struct kvm_vcpu_events *events) +{ + vcpu_ioctl(vcpu, KVM_SET_VCPU_EVENTS, events); +} +#endif +#ifdef __x86_64__ +static inline void vcpu_nested_state_get(struct kvm_vcpu *vcpu, + struct kvm_nested_state *state) +{ + vcpu_ioctl(vcpu, KVM_GET_NESTED_STATE, state); +} +static inline int __vcpu_nested_state_set(struct kvm_vcpu *vcpu, + struct kvm_nested_state *state) +{ + return __vcpu_ioctl(vcpu, KVM_SET_NESTED_STATE, state); +} + +static inline void vcpu_nested_state_set(struct kvm_vcpu *vcpu, + struct kvm_nested_state *state) +{ + vcpu_ioctl(vcpu, KVM_SET_NESTED_STATE, state); +} +#endif +static inline int vcpu_get_stats_fd(struct kvm_vcpu *vcpu) +{ + int fd = __vcpu_ioctl(vcpu, KVM_GET_STATS_FD, NULL); + + TEST_ASSERT_VM_VCPU_IOCTL(fd >= 0, KVM_CHECK_EXTENSION, fd, vcpu->vm); + return fd; +} + +int __kvm_has_device_attr(int dev_fd, uint32_t group, uint64_t attr); + +static inline void kvm_has_device_attr(int dev_fd, uint32_t group, uint64_t attr) +{ + int ret = __kvm_has_device_attr(dev_fd, group, attr); + + TEST_ASSERT(!ret, "KVM_HAS_DEVICE_ATTR failed, rc: %i errno: %i", ret, errno); +} + +int __kvm_device_attr_get(int dev_fd, uint32_t group, uint64_t attr, void *val); + +static inline void kvm_device_attr_get(int dev_fd, uint32_t group, + uint64_t attr, void *val) +{ + int ret = __kvm_device_attr_get(dev_fd, group, attr, val); + + TEST_ASSERT(!ret, KVM_IOCTL_ERROR(KVM_GET_DEVICE_ATTR, ret)); +} + +int __kvm_device_attr_set(int dev_fd, uint32_t group, uint64_t attr, void *val); + +static inline void kvm_device_attr_set(int dev_fd, uint32_t group, + uint64_t attr, void *val) +{ + int ret = __kvm_device_attr_set(dev_fd, group, attr, val); + + TEST_ASSERT(!ret, KVM_IOCTL_ERROR(KVM_SET_DEVICE_ATTR, ret)); +} + +static inline int __vcpu_has_device_attr(struct kvm_vcpu *vcpu, uint32_t group, + uint64_t attr) +{ + return __kvm_has_device_attr(vcpu->fd, group, attr); +} + +static inline void vcpu_has_device_attr(struct kvm_vcpu *vcpu, uint32_t group, + uint64_t attr) +{ + kvm_has_device_attr(vcpu->fd, group, attr); +} + +static inline int __vcpu_device_attr_get(struct kvm_vcpu *vcpu, uint32_t group, + uint64_t attr, void *val) +{ + return __kvm_device_attr_get(vcpu->fd, group, attr, val); +} + +static inline void vcpu_device_attr_get(struct kvm_vcpu *vcpu, uint32_t group, + uint64_t attr, void *val) +{ + kvm_device_attr_get(vcpu->fd, group, attr, val); +} + +static inline int __vcpu_device_attr_set(struct kvm_vcpu *vcpu, uint32_t group, + uint64_t attr, void *val) +{ + return __kvm_device_attr_set(vcpu->fd, group, attr, val); +} + +static inline void vcpu_device_attr_set(struct kvm_vcpu *vcpu, uint32_t group, + uint64_t attr, void *val) +{ + kvm_device_attr_set(vcpu->fd, group, attr, val); +} + +int __kvm_test_create_device(struct kvm_vm *vm, uint64_t type); +int __kvm_create_device(struct kvm_vm *vm, uint64_t type); + +static inline int kvm_create_device(struct kvm_vm *vm, uint64_t type) +{ + int fd = __kvm_create_device(vm, type); + + TEST_ASSERT(fd >= 0, KVM_IOCTL_ERROR(KVM_CREATE_DEVICE, fd)); + return fd; +} + +void *vcpu_map_dirty_ring(struct kvm_vcpu *vcpu); + +/* + * VM VCPU Args Set + * + * Input Args: + * vm - Virtual Machine + * num - number of arguments + * ... - arguments, each of type uint64_t + * + * Output Args: None + * + * Return: None + * + * Sets the first @num input parameters for the function at @vcpu's entry point, + * per the C calling convention of the architecture, to the values given as + * variable args. Each of the variable args is expected to be of type uint64_t. + * The maximum @num can be is specific to the architecture. + */ +void vcpu_args_set(struct kvm_vcpu *vcpu, unsigned int num, ...); + +void kvm_irq_line(struct kvm_vm *vm, uint32_t irq, int level); +int _kvm_irq_line(struct kvm_vm *vm, uint32_t irq, int level); + +#define KVM_MAX_IRQ_ROUTES 4096 + +struct kvm_irq_routing *kvm_gsi_routing_create(void); +void kvm_gsi_routing_irqchip_add(struct kvm_irq_routing *routing, + uint32_t gsi, uint32_t pin); +int _kvm_gsi_routing_write(struct kvm_vm *vm, struct kvm_irq_routing *routing); +void kvm_gsi_routing_write(struct kvm_vm *vm, struct kvm_irq_routing *routing); + +const char *exit_reason_str(unsigned int exit_reason); + +vm_paddr_t vm_phy_page_alloc(struct kvm_vm *vm, vm_paddr_t paddr_min, + uint32_t memslot); +vm_paddr_t __vm_phy_pages_alloc(struct kvm_vm *vm, size_t num, + vm_paddr_t paddr_min, uint32_t memslot, + bool protected); +vm_paddr_t vm_alloc_page_table(struct kvm_vm *vm); + +static inline vm_paddr_t vm_phy_pages_alloc(struct kvm_vm *vm, size_t num, + vm_paddr_t paddr_min, uint32_t memslot) +{ + /* + * By default, allocate memory as protected for VMs that support + * protected memory, as the majority of memory for such VMs is + * protected, i.e. using shared memory is effectively opt-in. + */ + return __vm_phy_pages_alloc(vm, num, paddr_min, memslot, + vm_arch_has_protected_memory(vm)); +} + +/* + * ____vm_create() does KVM_CREATE_VM and little else. __vm_create() also + * loads the test binary into guest memory and creates an IRQ chip (x86 only). + * __vm_create() does NOT create vCPUs, @nr_runnable_vcpus is used purely to + * calculate the amount of memory needed for per-vCPU data, e.g. stacks. + */ +struct kvm_vm *____vm_create(struct vm_shape shape); +struct kvm_vm *__vm_create(struct vm_shape shape, uint32_t nr_runnable_vcpus, + uint64_t nr_extra_pages); + +static inline struct kvm_vm *vm_create_barebones(void) +{ + return ____vm_create(VM_SHAPE_DEFAULT); +} + +#ifdef __x86_64__ +static inline struct kvm_vm *vm_create_barebones_protected_vm(void) +{ + const struct vm_shape shape = { + .mode = VM_MODE_DEFAULT, + .type = KVM_X86_SW_PROTECTED_VM, + }; + + return ____vm_create(shape); +} +#endif + +static inline struct kvm_vm *vm_create(uint32_t nr_runnable_vcpus) +{ + return __vm_create(VM_SHAPE_DEFAULT, nr_runnable_vcpus, 0); +} + +struct kvm_vm *__vm_create_with_vcpus(struct vm_shape shape, uint32_t nr_vcpus, + uint64_t extra_mem_pages, + void *guest_code, struct kvm_vcpu *vcpus[]); + +static inline struct kvm_vm *vm_create_with_vcpus(uint32_t nr_vcpus, + void *guest_code, + struct kvm_vcpu *vcpus[]) +{ + return __vm_create_with_vcpus(VM_SHAPE_DEFAULT, nr_vcpus, 0, + guest_code, vcpus); +} + + +struct kvm_vm *__vm_create_shape_with_one_vcpu(struct vm_shape shape, + struct kvm_vcpu **vcpu, + uint64_t extra_mem_pages, + void *guest_code); + +/* + * Create a VM with a single vCPU with reasonable defaults and @extra_mem_pages + * additional pages of guest memory. Returns the VM and vCPU (via out param). + */ +static inline struct kvm_vm *__vm_create_with_one_vcpu(struct kvm_vcpu **vcpu, + uint64_t extra_mem_pages, + void *guest_code) +{ + return __vm_create_shape_with_one_vcpu(VM_SHAPE_DEFAULT, vcpu, + extra_mem_pages, guest_code); +} + +static inline struct kvm_vm *vm_create_with_one_vcpu(struct kvm_vcpu **vcpu, + void *guest_code) +{ + return __vm_create_with_one_vcpu(vcpu, 0, guest_code); +} + +static inline struct kvm_vm *vm_create_shape_with_one_vcpu(struct vm_shape shape, + struct kvm_vcpu **vcpu, + void *guest_code) +{ + return __vm_create_shape_with_one_vcpu(shape, vcpu, 0, guest_code); +} + +struct kvm_vcpu *vm_recreate_with_one_vcpu(struct kvm_vm *vm); + +void kvm_pin_this_task_to_pcpu(uint32_t pcpu); +void kvm_print_vcpu_pinning_help(void); +void kvm_parse_vcpu_pinning(const char *pcpus_string, uint32_t vcpu_to_pcpu[], + int nr_vcpus); + +unsigned long vm_compute_max_gfn(struct kvm_vm *vm); +unsigned int vm_calc_num_guest_pages(enum vm_guest_mode mode, size_t size); +unsigned int vm_num_host_pages(enum vm_guest_mode mode, unsigned int num_guest_pages); +unsigned int vm_num_guest_pages(enum vm_guest_mode mode, unsigned int num_host_pages); +static inline unsigned int +vm_adjust_num_guest_pages(enum vm_guest_mode mode, unsigned int num_guest_pages) +{ + unsigned int n; + n = vm_num_guest_pages(mode, vm_num_host_pages(mode, num_guest_pages)); +#ifdef __s390x__ + /* s390 requires 1M aligned guest sizes */ + n = (n + 255) & ~255; +#endif + return n; +} + +#define sync_global_to_guest(vm, g) ({ \ + typeof(g) *_p = addr_gva2hva(vm, (vm_vaddr_t)&(g)); \ + memcpy(_p, &(g), sizeof(g)); \ +}) + +#define sync_global_from_guest(vm, g) ({ \ + typeof(g) *_p = addr_gva2hva(vm, (vm_vaddr_t)&(g)); \ + memcpy(&(g), _p, sizeof(g)); \ +}) + +/* + * Write a global value, but only in the VM's (guest's) domain. Primarily used + * for "globals" that hold per-VM values (VMs always duplicate code and global + * data into their own region of physical memory), but can be used anytime it's + * undesirable to change the host's copy of the global. + */ +#define write_guest_global(vm, g, val) ({ \ + typeof(g) *_p = addr_gva2hva(vm, (vm_vaddr_t)&(g)); \ + typeof(g) _val = val; \ + \ + memcpy(_p, &(_val), sizeof(g)); \ +}) + +void assert_on_unhandled_exception(struct kvm_vcpu *vcpu); + +void vcpu_arch_dump(FILE *stream, struct kvm_vcpu *vcpu, + uint8_t indent); + +static inline void vcpu_dump(FILE *stream, struct kvm_vcpu *vcpu, + uint8_t indent) +{ + vcpu_arch_dump(stream, vcpu, indent); +} + +/* + * Adds a vCPU with reasonable defaults (e.g. a stack) + * + * Input Args: + * vm - Virtual Machine + * vcpu_id - The id of the VCPU to add to the VM. + */ +struct kvm_vcpu *vm_arch_vcpu_add(struct kvm_vm *vm, uint32_t vcpu_id); +void vcpu_arch_set_entry_point(struct kvm_vcpu *vcpu, void *guest_code); + +static inline struct kvm_vcpu *vm_vcpu_add(struct kvm_vm *vm, uint32_t vcpu_id, + void *guest_code) +{ + struct kvm_vcpu *vcpu = vm_arch_vcpu_add(vm, vcpu_id); + + vcpu_arch_set_entry_point(vcpu, guest_code); + + return vcpu; +} + +/* Re-create a vCPU after restarting a VM, e.g. for state save/restore tests. */ +struct kvm_vcpu *vm_arch_vcpu_recreate(struct kvm_vm *vm, uint32_t vcpu_id); + +static inline struct kvm_vcpu *vm_vcpu_recreate(struct kvm_vm *vm, + uint32_t vcpu_id) +{ + return vm_arch_vcpu_recreate(vm, vcpu_id); +} + +void vcpu_arch_free(struct kvm_vcpu *vcpu); + +void virt_arch_pgd_alloc(struct kvm_vm *vm); + +static inline void virt_pgd_alloc(struct kvm_vm *vm) +{ + virt_arch_pgd_alloc(vm); +} + +/* + * VM Virtual Page Map + * + * Input Args: + * vm - Virtual Machine + * vaddr - VM Virtual Address + * paddr - VM Physical Address + * memslot - Memory region slot for new virtual translation tables + * + * Output Args: None + * + * Return: None + * + * Within @vm, creates a virtual translation for the page starting + * at @vaddr to the page starting at @paddr. + */ +void virt_arch_pg_map(struct kvm_vm *vm, uint64_t vaddr, uint64_t paddr); + +static inline void virt_pg_map(struct kvm_vm *vm, uint64_t vaddr, uint64_t paddr) +{ + virt_arch_pg_map(vm, vaddr, paddr); +} + + +/* + * Address Guest Virtual to Guest Physical + * + * Input Args: + * vm - Virtual Machine + * gva - VM virtual address + * + * Output Args: None + * + * Return: + * Equivalent VM physical address + * + * Returns the VM physical address of the translated VM virtual + * address given by @gva. + */ +vm_paddr_t addr_arch_gva2gpa(struct kvm_vm *vm, vm_vaddr_t gva); + +static inline vm_paddr_t addr_gva2gpa(struct kvm_vm *vm, vm_vaddr_t gva) +{ + return addr_arch_gva2gpa(vm, gva); +} + +/* + * Virtual Translation Tables Dump + * + * Input Args: + * stream - Output FILE stream + * vm - Virtual Machine + * indent - Left margin indent amount + * + * Output Args: None + * + * Return: None + * + * Dumps to the FILE stream given by @stream, the contents of all the + * virtual translation tables for the VM given by @vm. + */ +void virt_arch_dump(FILE *stream, struct kvm_vm *vm, uint8_t indent); + +static inline void virt_dump(FILE *stream, struct kvm_vm *vm, uint8_t indent) +{ + virt_arch_dump(stream, vm, indent); +} + + +static inline int __vm_disable_nx_huge_pages(struct kvm_vm *vm) +{ + return __vm_enable_cap(vm, KVM_CAP_VM_DISABLE_NX_HUGE_PAGES, 0); +} + +/* + * Arch hook that is invoked via a constructor, i.e. before exeucting main(), + * to allow for arch-specific setup that is common to all tests, e.g. computing + * the default guest "mode". + */ +void kvm_selftest_arch_init(void); + +void kvm_arch_vm_post_create(struct kvm_vm *vm); + +bool vm_is_gpa_protected(struct kvm_vm *vm, vm_paddr_t paddr); + +uint32_t guest_get_vcpuid(void); #endif /* SELFTEST_KVM_UTIL_H */ diff --git a/tools/testing/selftests/kvm/include/kvm_util_base.h b/tools/testing/selftests/kvm/include/kvm_util_base.h deleted file mode 100644 index 3e0db283a46a..000000000000 --- a/tools/testing/selftests/kvm/include/kvm_util_base.h +++ /dev/null @@ -1,1135 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * tools/testing/selftests/kvm/include/kvm_util_base.h - * - * Copyright (C) 2018, Google LLC. - */ -#ifndef SELFTEST_KVM_UTIL_BASE_H -#define SELFTEST_KVM_UTIL_BASE_H - -#include "test_util.h" - -#include -#include "linux/hashtable.h" -#include "linux/list.h" -#include -#include -#include "linux/rbtree.h" -#include - -#include -#include - -#include - -#include "kvm_util_arch.h" -#include "sparsebit.h" - -/* - * Provide a version of static_assert() that is guaranteed to have an optional - * message param. If _ISOC11_SOURCE is defined, glibc (/usr/include/assert.h) - * #undefs and #defines static_assert() as a direct alias to _Static_assert(), - * i.e. effectively makes the message mandatory. Many KVM selftests #define - * _GNU_SOURCE for various reasons, and _GNU_SOURCE implies _ISOC11_SOURCE. As - * a result, static_assert() behavior is non-deterministic and may or may not - * require a message depending on #include order. - */ -#define __kvm_static_assert(expr, msg, ...) _Static_assert(expr, msg) -#define kvm_static_assert(expr, ...) __kvm_static_assert(expr, ##__VA_ARGS__, #expr) - -#define KVM_DEV_PATH "/dev/kvm" -#define KVM_MAX_VCPUS 512 - -#define NSEC_PER_SEC 1000000000L - -typedef uint64_t vm_paddr_t; /* Virtual Machine (Guest) physical address */ -typedef uint64_t vm_vaddr_t; /* Virtual Machine (Guest) virtual address */ - -struct userspace_mem_region { - struct kvm_userspace_memory_region2 region; - struct sparsebit *unused_phy_pages; - struct sparsebit *protected_phy_pages; - int fd; - off_t offset; - enum vm_mem_backing_src_type backing_src_type; - void *host_mem; - void *host_alias; - void *mmap_start; - void *mmap_alias; - size_t mmap_size; - struct rb_node gpa_node; - struct rb_node hva_node; - struct hlist_node slot_node; -}; - -struct kvm_vcpu { - struct list_head list; - uint32_t id; - int fd; - struct kvm_vm *vm; - struct kvm_run *run; -#ifdef __x86_64__ - struct kvm_cpuid2 *cpuid; -#endif - struct kvm_dirty_gfn *dirty_gfns; - uint32_t fetch_index; - uint32_t dirty_gfns_count; -}; - -struct userspace_mem_regions { - struct rb_root gpa_tree; - struct rb_root hva_tree; - DECLARE_HASHTABLE(slot_hash, 9); -}; - -enum kvm_mem_region_type { - MEM_REGION_CODE, - MEM_REGION_DATA, - MEM_REGION_PT, - MEM_REGION_TEST_DATA, - NR_MEM_REGIONS, -}; - -struct kvm_vm { - int mode; - unsigned long type; - uint8_t subtype; - int kvm_fd; - int fd; - unsigned int pgtable_levels; - unsigned int page_size; - unsigned int page_shift; - unsigned int pa_bits; - unsigned int va_bits; - uint64_t max_gfn; - struct list_head vcpus; - struct userspace_mem_regions regions; - struct sparsebit *vpages_valid; - struct sparsebit *vpages_mapped; - bool has_irqchip; - bool pgd_created; - vm_paddr_t ucall_mmio_addr; - vm_paddr_t pgd; - vm_vaddr_t gdt; - vm_vaddr_t tss; - vm_vaddr_t idt; - vm_vaddr_t handlers; - uint32_t dirty_ring_size; - uint64_t gpa_tag_mask; - - struct kvm_vm_arch arch; - - /* Cache of information for binary stats interface */ - int stats_fd; - struct kvm_stats_header stats_header; - struct kvm_stats_desc *stats_desc; - - /* - * KVM region slots. These are the default memslots used by page - * allocators, e.g., lib/elf uses the memslots[MEM_REGION_CODE] - * memslot. - */ - uint32_t memslots[NR_MEM_REGIONS]; -}; - -struct vcpu_reg_sublist { - const char *name; - long capability; - int feature; - int feature_type; - bool finalize; - __u64 *regs; - __u64 regs_n; - __u64 *rejects_set; - __u64 rejects_set_n; - __u64 *skips_set; - __u64 skips_set_n; -}; - -struct vcpu_reg_list { - char *name; - struct vcpu_reg_sublist sublists[]; -}; - -#define for_each_sublist(c, s) \ - for ((s) = &(c)->sublists[0]; (s)->regs; ++(s)) - -#define kvm_for_each_vcpu(vm, i, vcpu) \ - for ((i) = 0; (i) <= (vm)->last_vcpu_id; (i)++) \ - if (!((vcpu) = vm->vcpus[i])) \ - continue; \ - else - -struct userspace_mem_region * -memslot2region(struct kvm_vm *vm, uint32_t memslot); - -static inline struct userspace_mem_region *vm_get_mem_region(struct kvm_vm *vm, - enum kvm_mem_region_type type) -{ - assert(type < NR_MEM_REGIONS); - return memslot2region(vm, vm->memslots[type]); -} - -/* Minimum allocated guest virtual and physical addresses */ -#define KVM_UTIL_MIN_VADDR 0x2000 -#define KVM_GUEST_PAGE_TABLE_MIN_PADDR 0x180000 - -#define DEFAULT_GUEST_STACK_VADDR_MIN 0xab6000 -#define DEFAULT_STACK_PGS 5 - -enum vm_guest_mode { - VM_MODE_P52V48_4K, - VM_MODE_P52V48_16K, - VM_MODE_P52V48_64K, - VM_MODE_P48V48_4K, - VM_MODE_P48V48_16K, - VM_MODE_P48V48_64K, - VM_MODE_P40V48_4K, - VM_MODE_P40V48_16K, - VM_MODE_P40V48_64K, - VM_MODE_PXXV48_4K, /* For 48bits VA but ANY bits PA */ - VM_MODE_P47V64_4K, - VM_MODE_P44V64_4K, - VM_MODE_P36V48_4K, - VM_MODE_P36V48_16K, - VM_MODE_P36V48_64K, - VM_MODE_P36V47_16K, - NUM_VM_MODES, -}; - -struct vm_shape { - uint32_t type; - uint8_t mode; - uint8_t subtype; - uint16_t padding; -}; - -kvm_static_assert(sizeof(struct vm_shape) == sizeof(uint64_t)); - -#define VM_TYPE_DEFAULT 0 - -#define VM_SHAPE(__mode) \ -({ \ - struct vm_shape shape = { \ - .mode = (__mode), \ - .type = VM_TYPE_DEFAULT \ - }; \ - \ - shape; \ -}) - -#if defined(__aarch64__) - -extern enum vm_guest_mode vm_mode_default; - -#define VM_MODE_DEFAULT vm_mode_default -#define MIN_PAGE_SHIFT 12U -#define ptes_per_page(page_size) ((page_size) / 8) - -#elif defined(__x86_64__) - -#define VM_MODE_DEFAULT VM_MODE_PXXV48_4K -#define MIN_PAGE_SHIFT 12U -#define ptes_per_page(page_size) ((page_size) / 8) - -#elif defined(__s390x__) - -#define VM_MODE_DEFAULT VM_MODE_P44V64_4K -#define MIN_PAGE_SHIFT 12U -#define ptes_per_page(page_size) ((page_size) / 16) - -#elif defined(__riscv) - -#if __riscv_xlen == 32 -#error "RISC-V 32-bit kvm selftests not supported" -#endif - -#define VM_MODE_DEFAULT VM_MODE_P40V48_4K -#define MIN_PAGE_SHIFT 12U -#define ptes_per_page(page_size) ((page_size) / 8) - -#endif - -#define VM_SHAPE_DEFAULT VM_SHAPE(VM_MODE_DEFAULT) - -#define MIN_PAGE_SIZE (1U << MIN_PAGE_SHIFT) -#define PTES_PER_MIN_PAGE ptes_per_page(MIN_PAGE_SIZE) - -struct vm_guest_mode_params { - unsigned int pa_bits; - unsigned int va_bits; - unsigned int page_size; - unsigned int page_shift; -}; -extern const struct vm_guest_mode_params vm_guest_mode_params[]; - -int open_path_or_exit(const char *path, int flags); -int open_kvm_dev_path_or_exit(void); - -bool get_kvm_param_bool(const char *param); -bool get_kvm_intel_param_bool(const char *param); -bool get_kvm_amd_param_bool(const char *param); - -int get_kvm_param_integer(const char *param); -int get_kvm_intel_param_integer(const char *param); -int get_kvm_amd_param_integer(const char *param); - -unsigned int kvm_check_cap(long cap); - -static inline bool kvm_has_cap(long cap) -{ - return kvm_check_cap(cap); -} - -#define __KVM_SYSCALL_ERROR(_name, _ret) \ - "%s failed, rc: %i errno: %i (%s)", (_name), (_ret), errno, strerror(errno) - -/* - * Use the "inner", double-underscore macro when reporting errors from within - * other macros so that the name of ioctl() and not its literal numeric value - * is printed on error. The "outer" macro is strongly preferred when reporting - * errors "directly", i.e. without an additional layer of macros, as it reduces - * the probability of passing in the wrong string. - */ -#define __KVM_IOCTL_ERROR(_name, _ret) __KVM_SYSCALL_ERROR(_name, _ret) -#define KVM_IOCTL_ERROR(_ioctl, _ret) __KVM_IOCTL_ERROR(#_ioctl, _ret) - -#define kvm_do_ioctl(fd, cmd, arg) \ -({ \ - kvm_static_assert(!_IOC_SIZE(cmd) || sizeof(*arg) == _IOC_SIZE(cmd)); \ - ioctl(fd, cmd, arg); \ -}) - -#define __kvm_ioctl(kvm_fd, cmd, arg) \ - kvm_do_ioctl(kvm_fd, cmd, arg) - -#define kvm_ioctl(kvm_fd, cmd, arg) \ -({ \ - int ret = __kvm_ioctl(kvm_fd, cmd, arg); \ - \ - TEST_ASSERT(!ret, __KVM_IOCTL_ERROR(#cmd, ret)); \ -}) - -static __always_inline void static_assert_is_vm(struct kvm_vm *vm) { } - -#define __vm_ioctl(vm, cmd, arg) \ -({ \ - static_assert_is_vm(vm); \ - kvm_do_ioctl((vm)->fd, cmd, arg); \ -}) - -/* - * Assert that a VM or vCPU ioctl() succeeded, with extra magic to detect if - * the ioctl() failed because KVM killed/bugged the VM. To detect a dead VM, - * probe KVM_CAP_USER_MEMORY, which (a) has been supported by KVM since before - * selftests existed and (b) should never outright fail, i.e. is supposed to - * return 0 or 1. If KVM kills a VM, KVM returns -EIO for all ioctl()s for the - * VM and its vCPUs, including KVM_CHECK_EXTENSION. - */ -#define __TEST_ASSERT_VM_VCPU_IOCTL(cond, name, ret, vm) \ -do { \ - int __errno = errno; \ - \ - static_assert_is_vm(vm); \ - \ - if (cond) \ - break; \ - \ - if (errno == EIO && \ - __vm_ioctl(vm, KVM_CHECK_EXTENSION, (void *)KVM_CAP_USER_MEMORY) < 0) { \ - TEST_ASSERT(errno == EIO, "KVM killed the VM, should return -EIO"); \ - TEST_FAIL("KVM killed/bugged the VM, check the kernel log for clues"); \ - } \ - errno = __errno; \ - TEST_ASSERT(cond, __KVM_IOCTL_ERROR(name, ret)); \ -} while (0) - -#define TEST_ASSERT_VM_VCPU_IOCTL(cond, cmd, ret, vm) \ - __TEST_ASSERT_VM_VCPU_IOCTL(cond, #cmd, ret, vm) - -#define vm_ioctl(vm, cmd, arg) \ -({ \ - int ret = __vm_ioctl(vm, cmd, arg); \ - \ - __TEST_ASSERT_VM_VCPU_IOCTL(!ret, #cmd, ret, vm); \ -}) - -static __always_inline void static_assert_is_vcpu(struct kvm_vcpu *vcpu) { } - -#define __vcpu_ioctl(vcpu, cmd, arg) \ -({ \ - static_assert_is_vcpu(vcpu); \ - kvm_do_ioctl((vcpu)->fd, cmd, arg); \ -}) - -#define vcpu_ioctl(vcpu, cmd, arg) \ -({ \ - int ret = __vcpu_ioctl(vcpu, cmd, arg); \ - \ - __TEST_ASSERT_VM_VCPU_IOCTL(!ret, #cmd, ret, (vcpu)->vm); \ -}) - -/* - * Looks up and returns the value corresponding to the capability - * (KVM_CAP_*) given by cap. - */ -static inline int vm_check_cap(struct kvm_vm *vm, long cap) -{ - int ret = __vm_ioctl(vm, KVM_CHECK_EXTENSION, (void *)cap); - - TEST_ASSERT_VM_VCPU_IOCTL(ret >= 0, KVM_CHECK_EXTENSION, ret, vm); - return ret; -} - -static inline int __vm_enable_cap(struct kvm_vm *vm, uint32_t cap, uint64_t arg0) -{ - struct kvm_enable_cap enable_cap = { .cap = cap, .args = { arg0 } }; - - return __vm_ioctl(vm, KVM_ENABLE_CAP, &enable_cap); -} -static inline void vm_enable_cap(struct kvm_vm *vm, uint32_t cap, uint64_t arg0) -{ - struct kvm_enable_cap enable_cap = { .cap = cap, .args = { arg0 } }; - - vm_ioctl(vm, KVM_ENABLE_CAP, &enable_cap); -} - -static inline void vm_set_memory_attributes(struct kvm_vm *vm, uint64_t gpa, - uint64_t size, uint64_t attributes) -{ - struct kvm_memory_attributes attr = { - .attributes = attributes, - .address = gpa, - .size = size, - .flags = 0, - }; - - /* - * KVM_SET_MEMORY_ATTRIBUTES overwrites _all_ attributes. These flows - * need significant enhancements to support multiple attributes. - */ - TEST_ASSERT(!attributes || attributes == KVM_MEMORY_ATTRIBUTE_PRIVATE, - "Update me to support multiple attributes!"); - - vm_ioctl(vm, KVM_SET_MEMORY_ATTRIBUTES, &attr); -} - - -static inline void vm_mem_set_private(struct kvm_vm *vm, uint64_t gpa, - uint64_t size) -{ - vm_set_memory_attributes(vm, gpa, size, KVM_MEMORY_ATTRIBUTE_PRIVATE); -} - -static inline void vm_mem_set_shared(struct kvm_vm *vm, uint64_t gpa, - uint64_t size) -{ - vm_set_memory_attributes(vm, gpa, size, 0); -} - -void vm_guest_mem_fallocate(struct kvm_vm *vm, uint64_t gpa, uint64_t size, - bool punch_hole); - -static inline void vm_guest_mem_punch_hole(struct kvm_vm *vm, uint64_t gpa, - uint64_t size) -{ - vm_guest_mem_fallocate(vm, gpa, size, true); -} - -static inline void vm_guest_mem_allocate(struct kvm_vm *vm, uint64_t gpa, - uint64_t size) -{ - vm_guest_mem_fallocate(vm, gpa, size, false); -} - -void vm_enable_dirty_ring(struct kvm_vm *vm, uint32_t ring_size); -const char *vm_guest_mode_string(uint32_t i); - -void kvm_vm_free(struct kvm_vm *vmp); -void kvm_vm_restart(struct kvm_vm *vmp); -void kvm_vm_release(struct kvm_vm *vmp); -int kvm_memcmp_hva_gva(void *hva, struct kvm_vm *vm, const vm_vaddr_t gva, - size_t len); -void kvm_vm_elf_load(struct kvm_vm *vm, const char *filename); -int kvm_memfd_alloc(size_t size, bool hugepages); - -void vm_dump(FILE *stream, struct kvm_vm *vm, uint8_t indent); - -static inline void kvm_vm_get_dirty_log(struct kvm_vm *vm, int slot, void *log) -{ - struct kvm_dirty_log args = { .dirty_bitmap = log, .slot = slot }; - - vm_ioctl(vm, KVM_GET_DIRTY_LOG, &args); -} - -static inline void kvm_vm_clear_dirty_log(struct kvm_vm *vm, int slot, void *log, - uint64_t first_page, uint32_t num_pages) -{ - struct kvm_clear_dirty_log args = { - .dirty_bitmap = log, - .slot = slot, - .first_page = first_page, - .num_pages = num_pages - }; - - vm_ioctl(vm, KVM_CLEAR_DIRTY_LOG, &args); -} - -static inline uint32_t kvm_vm_reset_dirty_ring(struct kvm_vm *vm) -{ - return __vm_ioctl(vm, KVM_RESET_DIRTY_RINGS, NULL); -} - -static inline int vm_get_stats_fd(struct kvm_vm *vm) -{ - int fd = __vm_ioctl(vm, KVM_GET_STATS_FD, NULL); - - TEST_ASSERT_VM_VCPU_IOCTL(fd >= 0, KVM_GET_STATS_FD, fd, vm); - return fd; -} - -static inline void read_stats_header(int stats_fd, struct kvm_stats_header *header) -{ - ssize_t ret; - - ret = pread(stats_fd, header, sizeof(*header), 0); - TEST_ASSERT(ret == sizeof(*header), - "Failed to read '%lu' header bytes, ret = '%ld'", - sizeof(*header), ret); -} - -struct kvm_stats_desc *read_stats_descriptors(int stats_fd, - struct kvm_stats_header *header); - -static inline ssize_t get_stats_descriptor_size(struct kvm_stats_header *header) -{ - /* - * The base size of the descriptor is defined by KVM's ABI, but the - * size of the name field is variable, as far as KVM's ABI is - * concerned. For a given instance of KVM, the name field is the same - * size for all stats and is provided in the overall stats header. - */ - return sizeof(struct kvm_stats_desc) + header->name_size; -} - -static inline struct kvm_stats_desc *get_stats_descriptor(struct kvm_stats_desc *stats, - int index, - struct kvm_stats_header *header) -{ - /* - * Note, size_desc includes the size of the name field, which is - * variable. i.e. this is NOT equivalent to &stats_desc[i]. - */ - return (void *)stats + index * get_stats_descriptor_size(header); -} - -void read_stat_data(int stats_fd, struct kvm_stats_header *header, - struct kvm_stats_desc *desc, uint64_t *data, - size_t max_elements); - -void __vm_get_stat(struct kvm_vm *vm, const char *stat_name, uint64_t *data, - size_t max_elements); - -static inline uint64_t vm_get_stat(struct kvm_vm *vm, const char *stat_name) -{ - uint64_t data; - - __vm_get_stat(vm, stat_name, &data, 1); - return data; -} - -void vm_create_irqchip(struct kvm_vm *vm); - -static inline int __vm_create_guest_memfd(struct kvm_vm *vm, uint64_t size, - uint64_t flags) -{ - struct kvm_create_guest_memfd guest_memfd = { - .size = size, - .flags = flags, - }; - - return __vm_ioctl(vm, KVM_CREATE_GUEST_MEMFD, &guest_memfd); -} - -static inline int vm_create_guest_memfd(struct kvm_vm *vm, uint64_t size, - uint64_t flags) -{ - int fd = __vm_create_guest_memfd(vm, size, flags); - - TEST_ASSERT(fd >= 0, KVM_IOCTL_ERROR(KVM_CREATE_GUEST_MEMFD, fd)); - return fd; -} - -void vm_set_user_memory_region(struct kvm_vm *vm, uint32_t slot, uint32_t flags, - uint64_t gpa, uint64_t size, void *hva); -int __vm_set_user_memory_region(struct kvm_vm *vm, uint32_t slot, uint32_t flags, - uint64_t gpa, uint64_t size, void *hva); -void vm_set_user_memory_region2(struct kvm_vm *vm, uint32_t slot, uint32_t flags, - uint64_t gpa, uint64_t size, void *hva, - uint32_t guest_memfd, uint64_t guest_memfd_offset); -int __vm_set_user_memory_region2(struct kvm_vm *vm, uint32_t slot, uint32_t flags, - uint64_t gpa, uint64_t size, void *hva, - uint32_t guest_memfd, uint64_t guest_memfd_offset); - -void vm_userspace_mem_region_add(struct kvm_vm *vm, - enum vm_mem_backing_src_type src_type, - uint64_t guest_paddr, uint32_t slot, uint64_t npages, - uint32_t flags); -void vm_mem_add(struct kvm_vm *vm, enum vm_mem_backing_src_type src_type, - uint64_t guest_paddr, uint32_t slot, uint64_t npages, - uint32_t flags, int guest_memfd_fd, uint64_t guest_memfd_offset); - -#ifndef vm_arch_has_protected_memory -static inline bool vm_arch_has_protected_memory(struct kvm_vm *vm) -{ - return false; -} -#endif - -void vm_mem_region_set_flags(struct kvm_vm *vm, uint32_t slot, uint32_t flags); -void vm_mem_region_move(struct kvm_vm *vm, uint32_t slot, uint64_t new_gpa); -void vm_mem_region_delete(struct kvm_vm *vm, uint32_t slot); -struct kvm_vcpu *__vm_vcpu_add(struct kvm_vm *vm, uint32_t vcpu_id); -void vm_populate_vaddr_bitmap(struct kvm_vm *vm); -vm_vaddr_t vm_vaddr_unused_gap(struct kvm_vm *vm, size_t sz, vm_vaddr_t vaddr_min); -vm_vaddr_t vm_vaddr_alloc(struct kvm_vm *vm, size_t sz, vm_vaddr_t vaddr_min); -vm_vaddr_t __vm_vaddr_alloc(struct kvm_vm *vm, size_t sz, vm_vaddr_t vaddr_min, - enum kvm_mem_region_type type); -vm_vaddr_t vm_vaddr_alloc_shared(struct kvm_vm *vm, size_t sz, - vm_vaddr_t vaddr_min, - enum kvm_mem_region_type type); -vm_vaddr_t vm_vaddr_alloc_pages(struct kvm_vm *vm, int nr_pages); -vm_vaddr_t __vm_vaddr_alloc_page(struct kvm_vm *vm, - enum kvm_mem_region_type type); -vm_vaddr_t vm_vaddr_alloc_page(struct kvm_vm *vm); - -void virt_map(struct kvm_vm *vm, uint64_t vaddr, uint64_t paddr, - unsigned int npages); -void *addr_gpa2hva(struct kvm_vm *vm, vm_paddr_t gpa); -void *addr_gva2hva(struct kvm_vm *vm, vm_vaddr_t gva); -vm_paddr_t addr_hva2gpa(struct kvm_vm *vm, void *hva); -void *addr_gpa2alias(struct kvm_vm *vm, vm_paddr_t gpa); - - -static inline vm_paddr_t vm_untag_gpa(struct kvm_vm *vm, vm_paddr_t gpa) -{ - return gpa & ~vm->gpa_tag_mask; -} - -void vcpu_run(struct kvm_vcpu *vcpu); -int _vcpu_run(struct kvm_vcpu *vcpu); - -static inline int __vcpu_run(struct kvm_vcpu *vcpu) -{ - return __vcpu_ioctl(vcpu, KVM_RUN, NULL); -} - -void vcpu_run_complete_io(struct kvm_vcpu *vcpu); -struct kvm_reg_list *vcpu_get_reg_list(struct kvm_vcpu *vcpu); - -static inline void vcpu_enable_cap(struct kvm_vcpu *vcpu, uint32_t cap, - uint64_t arg0) -{ - struct kvm_enable_cap enable_cap = { .cap = cap, .args = { arg0 } }; - - vcpu_ioctl(vcpu, KVM_ENABLE_CAP, &enable_cap); -} - -static inline void vcpu_guest_debug_set(struct kvm_vcpu *vcpu, - struct kvm_guest_debug *debug) -{ - vcpu_ioctl(vcpu, KVM_SET_GUEST_DEBUG, debug); -} - -static inline void vcpu_mp_state_get(struct kvm_vcpu *vcpu, - struct kvm_mp_state *mp_state) -{ - vcpu_ioctl(vcpu, KVM_GET_MP_STATE, mp_state); -} -static inline void vcpu_mp_state_set(struct kvm_vcpu *vcpu, - struct kvm_mp_state *mp_state) -{ - vcpu_ioctl(vcpu, KVM_SET_MP_STATE, mp_state); -} - -static inline void vcpu_regs_get(struct kvm_vcpu *vcpu, struct kvm_regs *regs) -{ - vcpu_ioctl(vcpu, KVM_GET_REGS, regs); -} - -static inline void vcpu_regs_set(struct kvm_vcpu *vcpu, struct kvm_regs *regs) -{ - vcpu_ioctl(vcpu, KVM_SET_REGS, regs); -} -static inline void vcpu_sregs_get(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs) -{ - vcpu_ioctl(vcpu, KVM_GET_SREGS, sregs); - -} -static inline void vcpu_sregs_set(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs) -{ - vcpu_ioctl(vcpu, KVM_SET_SREGS, sregs); -} -static inline int _vcpu_sregs_set(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs) -{ - return __vcpu_ioctl(vcpu, KVM_SET_SREGS, sregs); -} -static inline void vcpu_fpu_get(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) -{ - vcpu_ioctl(vcpu, KVM_GET_FPU, fpu); -} -static inline void vcpu_fpu_set(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) -{ - vcpu_ioctl(vcpu, KVM_SET_FPU, fpu); -} - -static inline int __vcpu_get_reg(struct kvm_vcpu *vcpu, uint64_t id, void *addr) -{ - struct kvm_one_reg reg = { .id = id, .addr = (uint64_t)addr }; - - return __vcpu_ioctl(vcpu, KVM_GET_ONE_REG, ®); -} -static inline int __vcpu_set_reg(struct kvm_vcpu *vcpu, uint64_t id, uint64_t val) -{ - struct kvm_one_reg reg = { .id = id, .addr = (uint64_t)&val }; - - return __vcpu_ioctl(vcpu, KVM_SET_ONE_REG, ®); -} -static inline void vcpu_get_reg(struct kvm_vcpu *vcpu, uint64_t id, void *addr) -{ - struct kvm_one_reg reg = { .id = id, .addr = (uint64_t)addr }; - - vcpu_ioctl(vcpu, KVM_GET_ONE_REG, ®); -} -static inline void vcpu_set_reg(struct kvm_vcpu *vcpu, uint64_t id, uint64_t val) -{ - struct kvm_one_reg reg = { .id = id, .addr = (uint64_t)&val }; - - vcpu_ioctl(vcpu, KVM_SET_ONE_REG, ®); -} - -#ifdef __KVM_HAVE_VCPU_EVENTS -static inline void vcpu_events_get(struct kvm_vcpu *vcpu, - struct kvm_vcpu_events *events) -{ - vcpu_ioctl(vcpu, KVM_GET_VCPU_EVENTS, events); -} -static inline void vcpu_events_set(struct kvm_vcpu *vcpu, - struct kvm_vcpu_events *events) -{ - vcpu_ioctl(vcpu, KVM_SET_VCPU_EVENTS, events); -} -#endif -#ifdef __x86_64__ -static inline void vcpu_nested_state_get(struct kvm_vcpu *vcpu, - struct kvm_nested_state *state) -{ - vcpu_ioctl(vcpu, KVM_GET_NESTED_STATE, state); -} -static inline int __vcpu_nested_state_set(struct kvm_vcpu *vcpu, - struct kvm_nested_state *state) -{ - return __vcpu_ioctl(vcpu, KVM_SET_NESTED_STATE, state); -} - -static inline void vcpu_nested_state_set(struct kvm_vcpu *vcpu, - struct kvm_nested_state *state) -{ - vcpu_ioctl(vcpu, KVM_SET_NESTED_STATE, state); -} -#endif -static inline int vcpu_get_stats_fd(struct kvm_vcpu *vcpu) -{ - int fd = __vcpu_ioctl(vcpu, KVM_GET_STATS_FD, NULL); - - TEST_ASSERT_VM_VCPU_IOCTL(fd >= 0, KVM_CHECK_EXTENSION, fd, vcpu->vm); - return fd; -} - -int __kvm_has_device_attr(int dev_fd, uint32_t group, uint64_t attr); - -static inline void kvm_has_device_attr(int dev_fd, uint32_t group, uint64_t attr) -{ - int ret = __kvm_has_device_attr(dev_fd, group, attr); - - TEST_ASSERT(!ret, "KVM_HAS_DEVICE_ATTR failed, rc: %i errno: %i", ret, errno); -} - -int __kvm_device_attr_get(int dev_fd, uint32_t group, uint64_t attr, void *val); - -static inline void kvm_device_attr_get(int dev_fd, uint32_t group, - uint64_t attr, void *val) -{ - int ret = __kvm_device_attr_get(dev_fd, group, attr, val); - - TEST_ASSERT(!ret, KVM_IOCTL_ERROR(KVM_GET_DEVICE_ATTR, ret)); -} - -int __kvm_device_attr_set(int dev_fd, uint32_t group, uint64_t attr, void *val); - -static inline void kvm_device_attr_set(int dev_fd, uint32_t group, - uint64_t attr, void *val) -{ - int ret = __kvm_device_attr_set(dev_fd, group, attr, val); - - TEST_ASSERT(!ret, KVM_IOCTL_ERROR(KVM_SET_DEVICE_ATTR, ret)); -} - -static inline int __vcpu_has_device_attr(struct kvm_vcpu *vcpu, uint32_t group, - uint64_t attr) -{ - return __kvm_has_device_attr(vcpu->fd, group, attr); -} - -static inline void vcpu_has_device_attr(struct kvm_vcpu *vcpu, uint32_t group, - uint64_t attr) -{ - kvm_has_device_attr(vcpu->fd, group, attr); -} - -static inline int __vcpu_device_attr_get(struct kvm_vcpu *vcpu, uint32_t group, - uint64_t attr, void *val) -{ - return __kvm_device_attr_get(vcpu->fd, group, attr, val); -} - -static inline void vcpu_device_attr_get(struct kvm_vcpu *vcpu, uint32_t group, - uint64_t attr, void *val) -{ - kvm_device_attr_get(vcpu->fd, group, attr, val); -} - -static inline int __vcpu_device_attr_set(struct kvm_vcpu *vcpu, uint32_t group, - uint64_t attr, void *val) -{ - return __kvm_device_attr_set(vcpu->fd, group, attr, val); -} - -static inline void vcpu_device_attr_set(struct kvm_vcpu *vcpu, uint32_t group, - uint64_t attr, void *val) -{ - kvm_device_attr_set(vcpu->fd, group, attr, val); -} - -int __kvm_test_create_device(struct kvm_vm *vm, uint64_t type); -int __kvm_create_device(struct kvm_vm *vm, uint64_t type); - -static inline int kvm_create_device(struct kvm_vm *vm, uint64_t type) -{ - int fd = __kvm_create_device(vm, type); - - TEST_ASSERT(fd >= 0, KVM_IOCTL_ERROR(KVM_CREATE_DEVICE, fd)); - return fd; -} - -void *vcpu_map_dirty_ring(struct kvm_vcpu *vcpu); - -/* - * VM VCPU Args Set - * - * Input Args: - * vm - Virtual Machine - * num - number of arguments - * ... - arguments, each of type uint64_t - * - * Output Args: None - * - * Return: None - * - * Sets the first @num input parameters for the function at @vcpu's entry point, - * per the C calling convention of the architecture, to the values given as - * variable args. Each of the variable args is expected to be of type uint64_t. - * The maximum @num can be is specific to the architecture. - */ -void vcpu_args_set(struct kvm_vcpu *vcpu, unsigned int num, ...); - -void kvm_irq_line(struct kvm_vm *vm, uint32_t irq, int level); -int _kvm_irq_line(struct kvm_vm *vm, uint32_t irq, int level); - -#define KVM_MAX_IRQ_ROUTES 4096 - -struct kvm_irq_routing *kvm_gsi_routing_create(void); -void kvm_gsi_routing_irqchip_add(struct kvm_irq_routing *routing, - uint32_t gsi, uint32_t pin); -int _kvm_gsi_routing_write(struct kvm_vm *vm, struct kvm_irq_routing *routing); -void kvm_gsi_routing_write(struct kvm_vm *vm, struct kvm_irq_routing *routing); - -const char *exit_reason_str(unsigned int exit_reason); - -vm_paddr_t vm_phy_page_alloc(struct kvm_vm *vm, vm_paddr_t paddr_min, - uint32_t memslot); -vm_paddr_t __vm_phy_pages_alloc(struct kvm_vm *vm, size_t num, - vm_paddr_t paddr_min, uint32_t memslot, - bool protected); -vm_paddr_t vm_alloc_page_table(struct kvm_vm *vm); - -static inline vm_paddr_t vm_phy_pages_alloc(struct kvm_vm *vm, size_t num, - vm_paddr_t paddr_min, uint32_t memslot) -{ - /* - * By default, allocate memory as protected for VMs that support - * protected memory, as the majority of memory for such VMs is - * protected, i.e. using shared memory is effectively opt-in. - */ - return __vm_phy_pages_alloc(vm, num, paddr_min, memslot, - vm_arch_has_protected_memory(vm)); -} - -/* - * ____vm_create() does KVM_CREATE_VM and little else. __vm_create() also - * loads the test binary into guest memory and creates an IRQ chip (x86 only). - * __vm_create() does NOT create vCPUs, @nr_runnable_vcpus is used purely to - * calculate the amount of memory needed for per-vCPU data, e.g. stacks. - */ -struct kvm_vm *____vm_create(struct vm_shape shape); -struct kvm_vm *__vm_create(struct vm_shape shape, uint32_t nr_runnable_vcpus, - uint64_t nr_extra_pages); - -static inline struct kvm_vm *vm_create_barebones(void) -{ - return ____vm_create(VM_SHAPE_DEFAULT); -} - -#ifdef __x86_64__ -static inline struct kvm_vm *vm_create_barebones_protected_vm(void) -{ - const struct vm_shape shape = { - .mode = VM_MODE_DEFAULT, - .type = KVM_X86_SW_PROTECTED_VM, - }; - - return ____vm_create(shape); -} -#endif - -static inline struct kvm_vm *vm_create(uint32_t nr_runnable_vcpus) -{ - return __vm_create(VM_SHAPE_DEFAULT, nr_runnable_vcpus, 0); -} - -struct kvm_vm *__vm_create_with_vcpus(struct vm_shape shape, uint32_t nr_vcpus, - uint64_t extra_mem_pages, - void *guest_code, struct kvm_vcpu *vcpus[]); - -static inline struct kvm_vm *vm_create_with_vcpus(uint32_t nr_vcpus, - void *guest_code, - struct kvm_vcpu *vcpus[]) -{ - return __vm_create_with_vcpus(VM_SHAPE_DEFAULT, nr_vcpus, 0, - guest_code, vcpus); -} - - -struct kvm_vm *__vm_create_shape_with_one_vcpu(struct vm_shape shape, - struct kvm_vcpu **vcpu, - uint64_t extra_mem_pages, - void *guest_code); - -/* - * Create a VM with a single vCPU with reasonable defaults and @extra_mem_pages - * additional pages of guest memory. Returns the VM and vCPU (via out param). - */ -static inline struct kvm_vm *__vm_create_with_one_vcpu(struct kvm_vcpu **vcpu, - uint64_t extra_mem_pages, - void *guest_code) -{ - return __vm_create_shape_with_one_vcpu(VM_SHAPE_DEFAULT, vcpu, - extra_mem_pages, guest_code); -} - -static inline struct kvm_vm *vm_create_with_one_vcpu(struct kvm_vcpu **vcpu, - void *guest_code) -{ - return __vm_create_with_one_vcpu(vcpu, 0, guest_code); -} - -static inline struct kvm_vm *vm_create_shape_with_one_vcpu(struct vm_shape shape, - struct kvm_vcpu **vcpu, - void *guest_code) -{ - return __vm_create_shape_with_one_vcpu(shape, vcpu, 0, guest_code); -} - -struct kvm_vcpu *vm_recreate_with_one_vcpu(struct kvm_vm *vm); - -void kvm_pin_this_task_to_pcpu(uint32_t pcpu); -void kvm_print_vcpu_pinning_help(void); -void kvm_parse_vcpu_pinning(const char *pcpus_string, uint32_t vcpu_to_pcpu[], - int nr_vcpus); - -unsigned long vm_compute_max_gfn(struct kvm_vm *vm); -unsigned int vm_calc_num_guest_pages(enum vm_guest_mode mode, size_t size); -unsigned int vm_num_host_pages(enum vm_guest_mode mode, unsigned int num_guest_pages); -unsigned int vm_num_guest_pages(enum vm_guest_mode mode, unsigned int num_host_pages); -static inline unsigned int -vm_adjust_num_guest_pages(enum vm_guest_mode mode, unsigned int num_guest_pages) -{ - unsigned int n; - n = vm_num_guest_pages(mode, vm_num_host_pages(mode, num_guest_pages)); -#ifdef __s390x__ - /* s390 requires 1M aligned guest sizes */ - n = (n + 255) & ~255; -#endif - return n; -} - -#define sync_global_to_guest(vm, g) ({ \ - typeof(g) *_p = addr_gva2hva(vm, (vm_vaddr_t)&(g)); \ - memcpy(_p, &(g), sizeof(g)); \ -}) - -#define sync_global_from_guest(vm, g) ({ \ - typeof(g) *_p = addr_gva2hva(vm, (vm_vaddr_t)&(g)); \ - memcpy(&(g), _p, sizeof(g)); \ -}) - -/* - * Write a global value, but only in the VM's (guest's) domain. Primarily used - * for "globals" that hold per-VM values (VMs always duplicate code and global - * data into their own region of physical memory), but can be used anytime it's - * undesirable to change the host's copy of the global. - */ -#define write_guest_global(vm, g, val) ({ \ - typeof(g) *_p = addr_gva2hva(vm, (vm_vaddr_t)&(g)); \ - typeof(g) _val = val; \ - \ - memcpy(_p, &(_val), sizeof(g)); \ -}) - -void assert_on_unhandled_exception(struct kvm_vcpu *vcpu); - -void vcpu_arch_dump(FILE *stream, struct kvm_vcpu *vcpu, - uint8_t indent); - -static inline void vcpu_dump(FILE *stream, struct kvm_vcpu *vcpu, - uint8_t indent) -{ - vcpu_arch_dump(stream, vcpu, indent); -} - -/* - * Adds a vCPU with reasonable defaults (e.g. a stack) - * - * Input Args: - * vm - Virtual Machine - * vcpu_id - The id of the VCPU to add to the VM. - */ -struct kvm_vcpu *vm_arch_vcpu_add(struct kvm_vm *vm, uint32_t vcpu_id); -void vcpu_arch_set_entry_point(struct kvm_vcpu *vcpu, void *guest_code); - -static inline struct kvm_vcpu *vm_vcpu_add(struct kvm_vm *vm, uint32_t vcpu_id, - void *guest_code) -{ - struct kvm_vcpu *vcpu = vm_arch_vcpu_add(vm, vcpu_id); - - vcpu_arch_set_entry_point(vcpu, guest_code); - - return vcpu; -} - -/* Re-create a vCPU after restarting a VM, e.g. for state save/restore tests. */ -struct kvm_vcpu *vm_arch_vcpu_recreate(struct kvm_vm *vm, uint32_t vcpu_id); - -static inline struct kvm_vcpu *vm_vcpu_recreate(struct kvm_vm *vm, - uint32_t vcpu_id) -{ - return vm_arch_vcpu_recreate(vm, vcpu_id); -} - -void vcpu_arch_free(struct kvm_vcpu *vcpu); - -void virt_arch_pgd_alloc(struct kvm_vm *vm); - -static inline void virt_pgd_alloc(struct kvm_vm *vm) -{ - virt_arch_pgd_alloc(vm); -} - -/* - * VM Virtual Page Map - * - * Input Args: - * vm - Virtual Machine - * vaddr - VM Virtual Address - * paddr - VM Physical Address - * memslot - Memory region slot for new virtual translation tables - * - * Output Args: None - * - * Return: None - * - * Within @vm, creates a virtual translation for the page starting - * at @vaddr to the page starting at @paddr. - */ -void virt_arch_pg_map(struct kvm_vm *vm, uint64_t vaddr, uint64_t paddr); - -static inline void virt_pg_map(struct kvm_vm *vm, uint64_t vaddr, uint64_t paddr) -{ - virt_arch_pg_map(vm, vaddr, paddr); -} - - -/* - * Address Guest Virtual to Guest Physical - * - * Input Args: - * vm - Virtual Machine - * gva - VM virtual address - * - * Output Args: None - * - * Return: - * Equivalent VM physical address - * - * Returns the VM physical address of the translated VM virtual - * address given by @gva. - */ -vm_paddr_t addr_arch_gva2gpa(struct kvm_vm *vm, vm_vaddr_t gva); - -static inline vm_paddr_t addr_gva2gpa(struct kvm_vm *vm, vm_vaddr_t gva) -{ - return addr_arch_gva2gpa(vm, gva); -} - -/* - * Virtual Translation Tables Dump - * - * Input Args: - * stream - Output FILE stream - * vm - Virtual Machine - * indent - Left margin indent amount - * - * Output Args: None - * - * Return: None - * - * Dumps to the FILE stream given by @stream, the contents of all the - * virtual translation tables for the VM given by @vm. - */ -void virt_arch_dump(FILE *stream, struct kvm_vm *vm, uint8_t indent); - -static inline void virt_dump(FILE *stream, struct kvm_vm *vm, uint8_t indent) -{ - virt_arch_dump(stream, vm, indent); -} - - -static inline int __vm_disable_nx_huge_pages(struct kvm_vm *vm) -{ - return __vm_enable_cap(vm, KVM_CAP_VM_DISABLE_NX_HUGE_PAGES, 0); -} - -/* - * Arch hook that is invoked via a constructor, i.e. before exeucting main(), - * to allow for arch-specific setup that is common to all tests, e.g. computing - * the default guest "mode". - */ -void kvm_selftest_arch_init(void); - -void kvm_arch_vm_post_create(struct kvm_vm *vm); - -bool vm_is_gpa_protected(struct kvm_vm *vm, vm_paddr_t paddr); - -uint32_t guest_get_vcpuid(void); - -#endif /* SELFTEST_KVM_UTIL_BASE_H */ diff --git a/tools/testing/selftests/kvm/include/s390x/ucall.h b/tools/testing/selftests/kvm/include/s390x/ucall.h index b231bf2e49d6..8035a872a351 100644 --- a/tools/testing/selftests/kvm/include/s390x/ucall.h +++ b/tools/testing/selftests/kvm/include/s390x/ucall.h @@ -2,7 +2,7 @@ #ifndef SELFTEST_KVM_UCALL_H #define SELFTEST_KVM_UCALL_H -#include "kvm_util_base.h" +#include "kvm_util.h" #define UCALL_EXIT_REASON KVM_EXIT_S390_SIEIC diff --git a/tools/testing/selftests/kvm/include/x86_64/processor.h b/tools/testing/selftests/kvm/include/x86_64/processor.h index 3bd03b088dda..d6ffe03c9d0b 100644 --- a/tools/testing/selftests/kvm/include/x86_64/processor.h +++ b/tools/testing/selftests/kvm/include/x86_64/processor.h @@ -18,7 +18,8 @@ #include #include -#include "../kvm_util.h" +#include "kvm_util.h" +#include "ucall_common.h" extern bool host_cpu_is_intel; extern bool host_cpu_is_amd; diff --git a/tools/testing/selftests/kvm/include/x86_64/ucall.h b/tools/testing/selftests/kvm/include/x86_64/ucall.h index 06b244bd06ee..d3825dcc3cd9 100644 --- a/tools/testing/selftests/kvm/include/x86_64/ucall.h +++ b/tools/testing/selftests/kvm/include/x86_64/ucall.h @@ -2,7 +2,7 @@ #ifndef SELFTEST_KVM_UCALL_H #define SELFTEST_KVM_UCALL_H -#include "kvm_util_base.h" +#include "kvm_util.h" #define UCALL_EXIT_REASON KVM_EXIT_IO diff --git a/tools/testing/selftests/kvm/kvm_page_table_test.c b/tools/testing/selftests/kvm/kvm_page_table_test.c index e0ba97ac1c56..e16ef18bcfc0 100644 --- a/tools/testing/selftests/kvm/kvm_page_table_test.c +++ b/tools/testing/selftests/kvm/kvm_page_table_test.c @@ -21,6 +21,7 @@ #include "kvm_util.h" #include "processor.h" #include "guest_modes.h" +#include "ucall_common.h" #define TEST_MEM_SLOT_INDEX 1 diff --git a/tools/testing/selftests/kvm/lib/aarch64/processor.c b/tools/testing/selftests/kvm/lib/aarch64/processor.c index a9eb17295be4..0ac7cc89f38c 100644 --- a/tools/testing/selftests/kvm/lib/aarch64/processor.c +++ b/tools/testing/selftests/kvm/lib/aarch64/processor.c @@ -11,6 +11,8 @@ #include "guest_modes.h" #include "kvm_util.h" #include "processor.h" +#include "ucall_common.h" + #include #include diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c index b2262b5fad9e..cec39b52b90d 100644 --- a/tools/testing/selftests/kvm/lib/kvm_util.c +++ b/tools/testing/selftests/kvm/lib/kvm_util.c @@ -9,6 +9,7 @@ #include "test_util.h" #include "kvm_util.h" #include "processor.h" +#include "ucall_common.h" #include #include diff --git a/tools/testing/selftests/kvm/lib/memstress.c b/tools/testing/selftests/kvm/lib/memstress.c index cf2c73971308..96432ad9efa6 100644 --- a/tools/testing/selftests/kvm/lib/memstress.c +++ b/tools/testing/selftests/kvm/lib/memstress.c @@ -10,6 +10,7 @@ #include "kvm_util.h" #include "memstress.h" #include "processor.h" +#include "ucall_common.h" struct memstress_args memstress_args; diff --git a/tools/testing/selftests/kvm/lib/riscv/processor.c b/tools/testing/selftests/kvm/lib/riscv/processor.c index e8211f5d6863..79b67e2627cb 100644 --- a/tools/testing/selftests/kvm/lib/riscv/processor.c +++ b/tools/testing/selftests/kvm/lib/riscv/processor.c @@ -10,6 +10,7 @@ #include "kvm_util.h" #include "processor.h" +#include "ucall_common.h" #define DEFAULT_RISCV_GUEST_STACK_VADDR_MIN 0xac0000 diff --git a/tools/testing/selftests/kvm/lib/ucall_common.c b/tools/testing/selftests/kvm/lib/ucall_common.c index f5af65a41c29..42151e571953 100644 --- a/tools/testing/selftests/kvm/lib/ucall_common.c +++ b/tools/testing/selftests/kvm/lib/ucall_common.c @@ -1,9 +1,12 @@ // SPDX-License-Identifier: GPL-2.0-only -#include "kvm_util.h" #include "linux/types.h" #include "linux/bitmap.h" #include "linux/atomic.h" +#include "kvm_util.h" +#include "ucall_common.h" + + #define GUEST_UCALL_FAILED -1 struct ucall_header { diff --git a/tools/testing/selftests/kvm/riscv/arch_timer.c b/tools/testing/selftests/kvm/riscv/arch_timer.c index e22848f747c0..d6375af0b23e 100644 --- a/tools/testing/selftests/kvm/riscv/arch_timer.c +++ b/tools/testing/selftests/kvm/riscv/arch_timer.c @@ -14,6 +14,7 @@ #include "kvm_util.h" #include "processor.h" #include "timer_test.h" +#include "ucall_common.h" static int timer_irq = IRQ_S_TIMER; diff --git a/tools/testing/selftests/kvm/rseq_test.c b/tools/testing/selftests/kvm/rseq_test.c index 28f97fb52044..d81f9b9c5809 100644 --- a/tools/testing/selftests/kvm/rseq_test.c +++ b/tools/testing/selftests/kvm/rseq_test.c @@ -19,6 +19,7 @@ #include "kvm_util.h" #include "processor.h" #include "test_util.h" +#include "ucall_common.h" #include "../rseq/rseq.c" diff --git a/tools/testing/selftests/kvm/s390x/cmma_test.c b/tools/testing/selftests/kvm/s390x/cmma_test.c index 626a2b8a2037..9e0033906638 100644 --- a/tools/testing/selftests/kvm/s390x/cmma_test.c +++ b/tools/testing/selftests/kvm/s390x/cmma_test.c @@ -18,6 +18,7 @@ #include "test_util.h" #include "kvm_util.h" #include "kselftest.h" +#include "ucall_common.h" #define MAIN_PAGE_COUNT 512 diff --git a/tools/testing/selftests/kvm/s390x/memop.c b/tools/testing/selftests/kvm/s390x/memop.c index bb3ca9a5d731..9b31693be1cb 100644 --- a/tools/testing/selftests/kvm/s390x/memop.c +++ b/tools/testing/selftests/kvm/s390x/memop.c @@ -15,6 +15,7 @@ #include "test_util.h" #include "kvm_util.h" #include "kselftest.h" +#include "ucall_common.h" enum mop_target { LOGICAL, diff --git a/tools/testing/selftests/kvm/s390x/tprot.c b/tools/testing/selftests/kvm/s390x/tprot.c index c73f948c9b63..7a742a673b7c 100644 --- a/tools/testing/selftests/kvm/s390x/tprot.c +++ b/tools/testing/selftests/kvm/s390x/tprot.c @@ -8,6 +8,7 @@ #include "test_util.h" #include "kvm_util.h" #include "kselftest.h" +#include "ucall_common.h" #define PAGE_SHIFT 12 #define PAGE_SIZE (1 << PAGE_SHIFT) diff --git a/tools/testing/selftests/kvm/steal_time.c b/tools/testing/selftests/kvm/steal_time.c index bae0c5026f82..4c669d0cb8c0 100644 --- a/tools/testing/selftests/kvm/steal_time.c +++ b/tools/testing/selftests/kvm/steal_time.c @@ -18,6 +18,7 @@ #include "test_util.h" #include "kvm_util.h" #include "processor.h" +#include "ucall_common.h" #define NR_VCPUS 4 #define ST_GPA_BASE (1 << 30) diff --git a/tools/testing/selftests/kvm/x86_64/dirty_log_page_splitting_test.c b/tools/testing/selftests/kvm/x86_64/dirty_log_page_splitting_test.c index ee3b384b991c..2929c067c207 100644 --- a/tools/testing/selftests/kvm/x86_64/dirty_log_page_splitting_test.c +++ b/tools/testing/selftests/kvm/x86_64/dirty_log_page_splitting_test.c @@ -17,6 +17,7 @@ #include "test_util.h" #include "memstress.h" #include "guest_modes.h" +#include "ucall_common.h" #define VCPUS 2 #define SLOTS 2 diff --git a/tools/testing/selftests/kvm/x86_64/exit_on_emulation_failure_test.c b/tools/testing/selftests/kvm/x86_64/exit_on_emulation_failure_test.c index 6c2e5e0ceb1f..fbac69d49b39 100644 --- a/tools/testing/selftests/kvm/x86_64/exit_on_emulation_failure_test.c +++ b/tools/testing/selftests/kvm/x86_64/exit_on_emulation_failure_test.c @@ -8,8 +8,8 @@ #define _GNU_SOURCE /* for program_invocation_short_name */ #include "flds_emulation.h" - #include "test_util.h" +#include "ucall_common.h" #define MMIO_GPA 0x700000000 #define MMIO_GVA MMIO_GPA diff --git a/tools/testing/selftests/kvm/x86_64/ucna_injection_test.c b/tools/testing/selftests/kvm/x86_64/ucna_injection_test.c index dcbb3c29fb8e..bc9be20f9600 100644 --- a/tools/testing/selftests/kvm/x86_64/ucna_injection_test.c +++ b/tools/testing/selftests/kvm/x86_64/ucna_injection_test.c @@ -24,7 +24,6 @@ #include #include -#include "kvm_util_base.h" #include "kvm_util.h" #include "mce.h" #include "processor.h" From patchwork Thu Mar 14 23:26:21 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Christopherson X-Patchwork-Id: 13592915 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1FC7AC54E5D for ; Thu, 14 Mar 2024 23:28:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:Reply-To:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:From:Subject:Message-ID :References:Mime-Version:In-Reply-To:Date:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=sE7VFHn5REc6u3Z/8CH/rmrIZWpBwwSy1AaKyLd+6jo=; b=WRRYPHsxnGAq3e tgKjmhDAbQgvaljGnAIHd41xpm9wHhFdvApsT6yhUDP0dg5LTuzy9GzcYX4jMX/5fhLYDlGXLyCEB nIqzHqHhAzsy16Tn9zabfL2BtKTU5G5JGCXO99+dhri0n7+EUjQ9MB9ZJrVIFFehlrmO1xLh/XpE7 +xPjl1m3uaVWqW4H/7GSgGaiJexsIMeWAB8ahN62UnLW3sW1TNG/GvE54oeLMFR941QYu+Btu4cfT qrLR1fWCL1MjvgbNtr/ir8J0fWpGyOivXBmkbbB62XtD0AJTjWAw9rWeeSdkvLUQN7TU1cz/RsjYi FVHLeKZjI+i0zc2pzvyg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkuUW-0000000G0kb-3aEQ; Thu, 14 Mar 2024 23:28:04 +0000 Received: from mail-pl1-x649.google.com ([2607:f8b0:4864:20::649]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkuTH-0000000Fzsp-26Q6 for linux-arm-kernel@lists.infradead.org; Thu, 14 Mar 2024 23:26:53 +0000 Received: by mail-pl1-x649.google.com with SMTP id d9443c01a7336-1ddc9430263so16859435ad.1 for ; Thu, 14 Mar 2024 16:26:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1710458804; x=1711063604; darn=lists.infradead.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=xxEEnp8KYxWW22Dja8/hqreyUmSSC0e9nt+hWHrby04=; b=JKW+Q0ubYJDRql1fynfXhZQTZClAOy4INC8uTrPpIp+z9qkkd2IHQfZ9kZwChWNNZv WnzGJkPMyqqctuTDwqg1iseYqb4o3gYjg0AVMPYJIM4ObWdU5t/uGSsF8XE+vrSkS9Dw 1XRNMr+Isvze+WEtY5p9COTXzCdGX91AaMtmoOD5TAFftIBiqEl5+1aa77Gbex6Xvo8i 2RPRpbkZHJuMAsUR2HE0zcfLyg0ADItubr4t5DLtCRUTjZLcOEKJWtQWgtm9nCOKx6AV PCCIewMpPhz3+ocz1qrDI/aNWhv1kHogLie6adH35aYssp8Sjn+EXsY21eYkBlya/O43 H0MA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710458804; x=1711063604; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=xxEEnp8KYxWW22Dja8/hqreyUmSSC0e9nt+hWHrby04=; b=oz4XrTShwayb0JIq9bjDfcIc8yzeox+rVqijCPi2fvp305kF/2wUS/At5fiZ6I38Nq /ay2Znro4PvXLSCkX/V07nKGC4r1glT4dpnZU+8okmOatZsTkVjxxNcy6TCJT6IkDiJs dYRdD8O9K6ot3AIpazVioPxhE4UQbg5kYrk+e67nGLJ40ubumfCrnvQD31TzfuiN8zyo zR/8z9qU/tyIr41aCu2oQnfcteZJu9jd6NYyAr+bK8sQPChq9TcpzCrduG4c5EVXjTLM IAYO0XzCwvKK0y36a08moqSkdCbCHhu6fIOlYrxVFN0hzCg0ZoAAZ3XAqlQf58h9Z1P5 1ERg== X-Gm-Message-State: AOJu0YxZfRoSCPPD5s7RNlzS6z86SXcVPX0jKOw70+YXaXHB8yBC9OE2 Y7oxiNmOQhkC8lWE8DbsPrzgb8JtexZMmBoaxSJEd2oG8euFXyr25QkoZug0LQxysy7Dr9egY3i +Zg== X-Google-Smtp-Source: AGHT+IH3tWVDzScYAxWAoO+AJJrzIFuBnfUykicaYWmU+HGG/cysXNug5oRiY871AjgR+7oBptYedZH/VEU= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a17:903:41c2:b0:1dd:7d71:5900 with SMTP id u2-20020a17090341c200b001dd7d715900mr9743ple.1.1710458803732; Thu, 14 Mar 2024 16:26:43 -0700 (PDT) Date: Thu, 14 Mar 2024 16:26:21 -0700 In-Reply-To: <20240314232637.2538648-1-seanjc@google.com> Mime-Version: 1.0 References: <20240314232637.2538648-1-seanjc@google.com> X-Mailer: git-send-email 2.44.0.291.gc1ea87d7ee-goog Message-ID: <20240314232637.2538648-3-seanjc@google.com> Subject: [PATCH 02/18] KVM: sefltests: Add kvm_util_types.h to hold common types, e.g. vm_vaddr_t From: Sean Christopherson To: Marc Zyngier , Oliver Upton , Paolo Bonzini , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Sean Christopherson , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Ackerley Tng X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240314_162647_754180_189765BE X-CRM114-Status: GOOD ( 16.71 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Sean Christopherson Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Move the base types unique to KVM selftests out of kvm_util.h and into a new header, kvm_util_types.h. This will allow kvm_util_arch.h, i.e. core arch headers, to reference common types, e.g. vm_vaddr_t and vm_paddr_t. No functional change intended. Signed-off-by: Sean Christopherson Reviewed-by: Ackerley Tng --- .../testing/selftests/kvm/include/kvm_util.h | 16 +-------------- .../selftests/kvm/include/kvm_util_types.h | 20 +++++++++++++++++++ 2 files changed, 21 insertions(+), 15 deletions(-) create mode 100644 tools/testing/selftests/kvm/include/kvm_util_types.h diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/testing/selftests/kvm/include/kvm_util.h index 95baee5142a7..acdcddf78e3f 100644 --- a/tools/testing/selftests/kvm/include/kvm_util.h +++ b/tools/testing/selftests/kvm/include/kvm_util.h @@ -21,28 +21,14 @@ #include #include "kvm_util_arch.h" +#include "kvm_util_types.h" #include "sparsebit.h" -/* - * Provide a version of static_assert() that is guaranteed to have an optional - * message param. If _ISOC11_SOURCE is defined, glibc (/usr/include/assert.h) - * #undefs and #defines static_assert() as a direct alias to _Static_assert(), - * i.e. effectively makes the message mandatory. Many KVM selftests #define - * _GNU_SOURCE for various reasons, and _GNU_SOURCE implies _ISOC11_SOURCE. As - * a result, static_assert() behavior is non-deterministic and may or may not - * require a message depending on #include order. - */ -#define __kvm_static_assert(expr, msg, ...) _Static_assert(expr, msg) -#define kvm_static_assert(expr, ...) __kvm_static_assert(expr, ##__VA_ARGS__, #expr) - #define KVM_DEV_PATH "/dev/kvm" #define KVM_MAX_VCPUS 512 #define NSEC_PER_SEC 1000000000L -typedef uint64_t vm_paddr_t; /* Virtual Machine (Guest) physical address */ -typedef uint64_t vm_vaddr_t; /* Virtual Machine (Guest) virtual address */ - struct userspace_mem_region { struct kvm_userspace_memory_region2 region; struct sparsebit *unused_phy_pages; diff --git a/tools/testing/selftests/kvm/include/kvm_util_types.h b/tools/testing/selftests/kvm/include/kvm_util_types.h new file mode 100644 index 000000000000..764491366eb9 --- /dev/null +++ b/tools/testing/selftests/kvm/include/kvm_util_types.h @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +#ifndef SELFTEST_KVM_UTIL_TYPES_H +#define SELFTEST_KVM_UTIL_TYPES_H + +/* + * Provide a version of static_assert() that is guaranteed to have an optional + * message param. If _ISOC11_SOURCE is defined, glibc (/usr/include/assert.h) + * #undefs and #defines static_assert() as a direct alias to _Static_assert(), + * i.e. effectively makes the message mandatory. Many KVM selftests #define + * _GNU_SOURCE for various reasons, and _GNU_SOURCE implies _ISOC11_SOURCE. As + * a result, static_assert() behavior is non-deterministic and may or may not + * require a message depending on #include order. + */ +#define __kvm_static_assert(expr, msg, ...) _Static_assert(expr, msg) +#define kvm_static_assert(expr, ...) __kvm_static_assert(expr, ##__VA_ARGS__, #expr) + +typedef uint64_t vm_paddr_t; /* Virtual Machine (Guest) physical address */ +typedef uint64_t vm_vaddr_t; /* Virtual Machine (Guest) virtual address */ + +#endif /* SELFTEST_KVM_UTIL_TYPES_H */ From patchwork Thu Mar 14 23:26:22 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Christopherson X-Patchwork-Id: 13592916 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1E942C54E5D for ; Thu, 14 Mar 2024 23:28:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:Reply-To:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:From:Subject:Message-ID :References:Mime-Version:In-Reply-To:Date:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Ht36Q9UjkOl/cdP2oYOsyWM2YWGHEpoWCmeXUbLqzuo=; b=g0W+kIpzMEheml bU+y3k/JlGb6yGg8W2fWgIW2bsKUio8OgdcW5gO1EbrtCtpt64G5iW7p813nU0mQzSD/3qFQFse9A dVTZL6UXz4H2vyQkP+T1QsmvOB5d+62ETdGgpIy21GoJhjlnjufy0/qOxXSETRf2QLsCkbzHW9WdE AUC9y4syrm2VornLArYfVUax1dmaWEdIiKND58dMin25SY3OzNYWkcQyIADdUg/eZtnozUVMjJKFY 4jXMYSNq/zmfYy+tUOC7+wBEVS8kIFyRPGisvFiDImLblH3WHXLpdqFg/j94D9xEK74aZoqY8erq6 UUknVhcGfsZ9MGXCKEdw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkuUj-0000000G0uo-0k4u; Thu, 14 Mar 2024 23:28:17 +0000 Received: from mail-yb1-xb4a.google.com ([2607:f8b0:4864:20::b4a]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkuTK-0000000FzvB-1o9e for linux-arm-kernel@lists.infradead.org; Thu, 14 Mar 2024 23:26:57 +0000 Received: by mail-yb1-xb4a.google.com with SMTP id 3f1490d57ef6-dcc05887ee9so2118011276.1 for ; Thu, 14 Mar 2024 16:26:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1710458805; x=1711063605; darn=lists.infradead.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=RlUxziw8BSQloGiMQruhCdJKG6uB341JDYak+7wFF+E=; b=eLgC7FhFkAoa8lEawh65DkV4VKTvmBu2T7ObLQKyOPlkGBJh14RUCA6sgLYWvQ2smD YKgxlgQ4rzQiTolE/1kngRa6El4DbSXJYRohzrpHOJvGkEV1FcFln8JyyAj6CojF1UQY VnL8nKtalvmGMpc0h8sllRNx9CVtIE21XxVwu5Sk+/b8MNPjUWu5dtdBVCX/V6TwjjtV Vp3Cz/4FPn/BK41l1v7jsRocd2udEdNqziVxxz4RY8b54A+UqL9aqCCuzI4Q3Cs6owPc f7Tlt4xd/BWKrj2fLblejzS67nWACq85KBXYW0WcB/e0CWOMMluWs3iMqTd2ve1rTWQl AzjQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710458805; x=1711063605; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=RlUxziw8BSQloGiMQruhCdJKG6uB341JDYak+7wFF+E=; b=xSVPMTMtdtFq/Io6gOudQBfoiqmKG2gGJsDeOxuNHjUw0Bahl8gtSjwpXrCZLLmIWC BYVwfKh4OcOhew/ueEnuZKpFFD3enmyfTouUaaJJMPcjjibnbgWiRBp865f1k+pbuE17 d3gd8h++3qfrx917YVHWAfvsExcXG9W0sWknaXOXdWpN+neGj3G5/RtHk8Cw54p0teC4 JxKUSCmi+4fPt9Lng0g2VKRjSG4gVt7xFCbSQbAxkPeKjyQu8zLn9/8sRJWKyX8jp6El ECn4YzY4a9iMRxQy/8gGKSWLuW/bxHgzr+2xdctGmSVXuVQGqEUfPXEFxDOY4pXtN5ir kDsw== X-Gm-Message-State: AOJu0Yyunp9uheKSG4t+gVeeYucKsEd67ZwMtMy73MQ5RkldhNKS+rof X1Bb9o6UbsNY2uxj0ejEHRE6JGwRu0dU2XVUCvfyRpGNm7wmkf8Nfr6/fNpHeU24UMV2G0RJoPV lOQ== X-Google-Smtp-Source: AGHT+IH4/ZMXFC2bouhklnoQYb0n6FnYJheuUMSCo2hpU0HMSJmGgKAAvzyEpu0qKMWThNjUG8Cmprp+aaY= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a05:6902:1b08:b0:dc6:c94e:fb85 with SMTP id eh8-20020a0569021b0800b00dc6c94efb85mr188198ybb.2.1710458805679; Thu, 14 Mar 2024 16:26:45 -0700 (PDT) Date: Thu, 14 Mar 2024 16:26:22 -0700 In-Reply-To: <20240314232637.2538648-1-seanjc@google.com> Mime-Version: 1.0 References: <20240314232637.2538648-1-seanjc@google.com> X-Mailer: git-send-email 2.44.0.291.gc1ea87d7ee-goog Message-ID: <20240314232637.2538648-4-seanjc@google.com> Subject: [PATCH 03/18] KVM: selftests: Move GDT, IDT, and TSS fields to x86's kvm_vm_arch From: Sean Christopherson To: Marc Zyngier , Oliver Upton , Paolo Bonzini , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Sean Christopherson , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Ackerley Tng X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240314_162650_759281_538B4C63 X-CRM114-Status: GOOD ( 14.61 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Sean Christopherson Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Now that kvm_vm_arch exists, move the GDT, IDT, and TSS fields to x86's implementation, as the structures are firmly x86-only. Signed-off-by: Sean Christopherson Reviewed-by: Ackerley Tng --- .../testing/selftests/kvm/include/kvm_util.h | 3 --- .../kvm/include/x86_64/kvm_util_arch.h | 6 +++++ .../selftests/kvm/lib/x86_64/processor.c | 22 +++++++++---------- .../kvm/x86_64/svm_nested_shutdown_test.c | 2 +- .../kvm/x86_64/svm_nested_soft_inject_test.c | 2 +- 5 files changed, 19 insertions(+), 16 deletions(-) diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/testing/selftests/kvm/include/kvm_util.h index acdcddf78e3f..58d6a4d6ce4f 100644 --- a/tools/testing/selftests/kvm/include/kvm_util.h +++ b/tools/testing/selftests/kvm/include/kvm_util.h @@ -94,9 +94,6 @@ struct kvm_vm { bool pgd_created; vm_paddr_t ucall_mmio_addr; vm_paddr_t pgd; - vm_vaddr_t gdt; - vm_vaddr_t tss; - vm_vaddr_t idt; vm_vaddr_t handlers; uint32_t dirty_ring_size; uint64_t gpa_tag_mask; diff --git a/tools/testing/selftests/kvm/include/x86_64/kvm_util_arch.h b/tools/testing/selftests/kvm/include/x86_64/kvm_util_arch.h index 9f1725192aa2..b14ff3a88b4a 100644 --- a/tools/testing/selftests/kvm/include/x86_64/kvm_util_arch.h +++ b/tools/testing/selftests/kvm/include/x86_64/kvm_util_arch.h @@ -5,7 +5,13 @@ #include #include +#include "kvm_util_types.h" + struct kvm_vm_arch { + vm_vaddr_t gdt; + vm_vaddr_t tss; + vm_vaddr_t idt; + uint64_t c_bit; uint64_t s_bit; int sev_fd; diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c index 74a4c736c9ae..45f965c052a1 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/processor.c +++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c @@ -417,7 +417,7 @@ static void kvm_seg_set_unusable(struct kvm_segment *segp) static void kvm_seg_fill_gdt_64bit(struct kvm_vm *vm, struct kvm_segment *segp) { - void *gdt = addr_gva2hva(vm, vm->gdt); + void *gdt = addr_gva2hva(vm, vm->arch.gdt); struct desc64 *desc = gdt + (segp->selector >> 3) * 8; desc->limit0 = segp->limit & 0xFFFF; @@ -518,21 +518,21 @@ vm_paddr_t addr_arch_gva2gpa(struct kvm_vm *vm, vm_vaddr_t gva) static void kvm_setup_gdt(struct kvm_vm *vm, struct kvm_dtable *dt) { - if (!vm->gdt) - vm->gdt = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA); + if (!vm->arch.gdt) + vm->arch.gdt = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA); - dt->base = vm->gdt; + dt->base = vm->arch.gdt; dt->limit = getpagesize(); } static void kvm_setup_tss_64bit(struct kvm_vm *vm, struct kvm_segment *segp, int selector) { - if (!vm->tss) - vm->tss = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA); + if (!vm->arch.tss) + vm->arch.tss = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA); memset(segp, 0, sizeof(*segp)); - segp->base = vm->tss; + segp->base = vm->arch.tss; segp->limit = 0x67; segp->selector = selector; segp->type = 0xb; @@ -1091,7 +1091,7 @@ static void set_idt_entry(struct kvm_vm *vm, int vector, unsigned long addr, int dpl, unsigned short selector) { struct idt_entry *base = - (struct idt_entry *)addr_gva2hva(vm, vm->idt); + (struct idt_entry *)addr_gva2hva(vm, vm->arch.idt); struct idt_entry *e = &base[vector]; memset(e, 0, sizeof(*e)); @@ -1144,7 +1144,7 @@ void vm_init_descriptor_tables(struct kvm_vm *vm) extern void *idt_handlers; int i; - vm->idt = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA); + vm->arch.idt = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA); vm->handlers = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA); /* Handlers have the same address in both address spaces.*/ for (i = 0; i < NUM_INTERRUPTS; i++) @@ -1158,9 +1158,9 @@ void vcpu_init_descriptor_tables(struct kvm_vcpu *vcpu) struct kvm_sregs sregs; vcpu_sregs_get(vcpu, &sregs); - sregs.idt.base = vm->idt; + sregs.idt.base = vm->arch.idt; sregs.idt.limit = NUM_INTERRUPTS * sizeof(struct idt_entry) - 1; - sregs.gdt.base = vm->gdt; + sregs.gdt.base = vm->arch.gdt; sregs.gdt.limit = getpagesize() - 1; kvm_seg_set_kernel_data_64bit(NULL, DEFAULT_DATA_SELECTOR, &sregs.gs); vcpu_sregs_set(vcpu, &sregs); diff --git a/tools/testing/selftests/kvm/x86_64/svm_nested_shutdown_test.c b/tools/testing/selftests/kvm/x86_64/svm_nested_shutdown_test.c index d6fcdcc3af31..f4a1137e04ab 100644 --- a/tools/testing/selftests/kvm/x86_64/svm_nested_shutdown_test.c +++ b/tools/testing/selftests/kvm/x86_64/svm_nested_shutdown_test.c @@ -53,7 +53,7 @@ int main(int argc, char *argv[]) vcpu_alloc_svm(vm, &svm_gva); - vcpu_args_set(vcpu, 2, svm_gva, vm->idt); + vcpu_args_set(vcpu, 2, svm_gva, vm->arch.idt); vcpu_run(vcpu); TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_SHUTDOWN); diff --git a/tools/testing/selftests/kvm/x86_64/svm_nested_soft_inject_test.c b/tools/testing/selftests/kvm/x86_64/svm_nested_soft_inject_test.c index 0c7ce3d4e83a..2478a9e50743 100644 --- a/tools/testing/selftests/kvm/x86_64/svm_nested_soft_inject_test.c +++ b/tools/testing/selftests/kvm/x86_64/svm_nested_soft_inject_test.c @@ -166,7 +166,7 @@ static void run_test(bool is_nmi) idt_alt_vm = vm_vaddr_alloc_page(vm); idt_alt = addr_gva2hva(vm, idt_alt_vm); - idt = addr_gva2hva(vm, vm->idt); + idt = addr_gva2hva(vm, vm->arch.idt); memcpy(idt_alt, idt, getpagesize()); } else { idt_alt_vm = 0; From patchwork Thu Mar 14 23:26:23 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Christopherson X-Patchwork-Id: 13592921 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 82716C54E5D for ; Thu, 14 Mar 2024 23:29:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:Reply-To:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:From:Subject:Message-ID :References:Mime-Version:In-Reply-To:Date:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ZzISp+KIJ1rcqFhdFUf/brhY/mer/vbGkkK864UVUJ8=; b=y9+pcJzMksJuEE N2TiED15/rEZ3BpLaIjAUmdch0RBO1DNkvR/Q6PLx/NN09BXCiQEsE15VcQ64PrJou16+g9KzdqHW L03rig3FlFGyI+DrJ7f/ypTL6S6w85A79ky32d0TtIy96t7YQcnBdTFdvZj3TS5gOXlZdlOkh3MeR V20uAAUzju7lMltbo74Y8X1OLkF9bL7Yn76ZcE7+rTzFM5bjei1k0YIfnisF5wiaqyKy+Un5vxJvd UoclR8hkyeBvRjLPZx4BuWDT37U0Lz2eaoI9YiPqKqtCz5jXS5BUSAriX7UeeNWI/bnHngS708Ciz /LRVsglLIJzd8VedQZPg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkuVO-0000000G1RE-0cPs; Thu, 14 Mar 2024 23:28:58 +0000 Received: from mail-pf1-x44a.google.com ([2607:f8b0:4864:20::44a]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkuTK-0000000FzwP-3uiw for linux-arm-kernel@lists.infradead.org; Thu, 14 Mar 2024 23:26:59 +0000 Received: by mail-pf1-x44a.google.com with SMTP id d2e1a72fcca58-6e6edde53cfso625833b3a.0 for ; Thu, 14 Mar 2024 16:26:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1710458807; x=1711063607; darn=lists.infradead.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=f7mdClvgIXUuf9+yuKM3CelLdMACw57Fq4PBdMk33ZU=; b=FKr/UEJz9/6of5OgPHXRYgthS0GtWiFBGb5E7uPyEmZkVyN8sbyYOOxJzGqvhSVvhx reG0SitYdSG/pN/szrJbvpQ1NF9mxb+rlNGDsWKYlkVIGPWbi3RHuAOxasYnZuuew46G TPvodtRGGR+qSDj6nW/4TzjOWFtY/eUJdCxFoRId1FFfZ42Ahlgt/0WjWyMHyPCYQV1s hIqLWFob1TOy0L+UBcVFyzoMJtaI32RVYalizq34znEZeglR47TsGBFUwES1UnU++KEu o3NVDBT5pcgHsFGoatZdBI6o9J3wp9NSexXEKwGw4OzBgBXcKn9Osc+m/wGcVuhbndPx tgJQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710458807; x=1711063607; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=f7mdClvgIXUuf9+yuKM3CelLdMACw57Fq4PBdMk33ZU=; b=cAz2nzDoy11wxa5CDvCAkwV6EnkRa7e4ADG8SeWyBoP67/nHfGQFrKTw7PaVv5t4V9 8Xcf+rR44qvbOoNE7lh4ZPeU8KW0vMZ4oZxSxQXuZ4esfKQkv3DRULVBsfHI7nVnaG2U Zr2BMFssN1krx/gwXjFCMS/qZkPZGhg1ZhfneyjVNTRqhHdn0umXVMKI3BlrdOPsTF5I kKP+swaht22ndiweHyQSpR4k2XfknRAU6DEKvIJs1qkSQ7/0Bgl+43KEcy420Ub9mqGs 0yoo6D1TNPgJUNconec+FqGM+K7GQe4i1Szb2tShrYXY/Yfeeo+3xgz/kisCn3ybCB3P NQiw== X-Gm-Message-State: AOJu0Ywu84XBpNM7Gj+CurtOMhp5O91qFsmG1QCeG/mASVMs7SjQiKur xRinOYuOUpx1nS6ViSOMB+6Nt6Ilq+mTLFTowJVy3eDvIZEdW6zqGVZeO999epogFvYX9Fs+jtS N4g== X-Google-Smtp-Source: AGHT+IHP+9uB+bS3/lKcsyk7/8c0Ce59jwpM+G35vfnwrWKSRS2+iNaQrX8dqel6o4dt3H0Nsgf9UIQa3fs= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a05:6a00:1a:b0:6e6:eefe:945d with SMTP id h26-20020a056a00001a00b006e6eefe945dmr9863pfk.0.1710458807233; Thu, 14 Mar 2024 16:26:47 -0700 (PDT) Date: Thu, 14 Mar 2024 16:26:23 -0700 In-Reply-To: <20240314232637.2538648-1-seanjc@google.com> Mime-Version: 1.0 References: <20240314232637.2538648-1-seanjc@google.com> X-Mailer: git-send-email 2.44.0.291.gc1ea87d7ee-goog Message-ID: <20240314232637.2538648-5-seanjc@google.com> Subject: [PATCH 04/18] KVM: selftests: Fix off-by-one initialization of GDT limit From: Sean Christopherson To: Marc Zyngier , Oliver Upton , Paolo Bonzini , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Sean Christopherson , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Ackerley Tng X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240314_162651_441094_AA00C33D X-CRM114-Status: GOOD ( 12.50 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Sean Christopherson Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Ackerley Tng Fix an off-by-one bug in the initialization of the GDT limit, which as defined in the SDM is inclusive, not exclusive. Note, vcpu_init_descriptor_tables() gets the limit correct, it's only vcpu_setup() that is broken, i.e. only tests that _don't_ invoke vcpu_init_descriptor_tables() can have problems. And the fact that KVM effectively initializes the GDT twice will be cleaned up in the near future. Signed-off-by: Ackerley Tng [sean: rewrite changelog] Signed-off-by: Sean Christopherson --- tools/testing/selftests/kvm/lib/x86_64/processor.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c index 45f965c052a1..eaeba907bb53 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/processor.c +++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c @@ -522,7 +522,7 @@ static void kvm_setup_gdt(struct kvm_vm *vm, struct kvm_dtable *dt) vm->arch.gdt = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA); dt->base = vm->arch.gdt; - dt->limit = getpagesize(); + dt->limit = getpagesize() - 1; } static void kvm_setup_tss_64bit(struct kvm_vm *vm, struct kvm_segment *segp, From patchwork Thu Mar 14 23:26:24 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Christopherson X-Patchwork-Id: 13592946 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 314F4C54E6A for ; Fri, 15 Mar 2024 00:32:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:Reply-To:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:From:Subject:Message-ID :References:Mime-Version:In-Reply-To:Date:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=RXcX+KcXU8WhoemI9zMEMrhEyMD21fHLoiDtzVYQnxs=; b=upppagMmCEkF2+ V25wR8ro1zcQ+UmI0F2DkdAPHU+nF6GkxhL8bApESC7ysbvUnBLQschgk9Xz7jRylaCyGuvfGg7ta TUP5OntkiucamFDnzk5Tb9Sudtj4aszuPKRQ992Zi7FNWG6UfWX5To1lOelu4wv0ssEc2ZMBZ7acl jIIof1ueHmcM2HAR598lY4jfAxNa4k8sAMnt6S8ZKoS/OCIWAXulglKK2zG5suAz4G2ZuQ2QeB+vp +IeS1WLfhoYolX0wIJm2Rglw42nnVEfAdWQM72PyhbmEPL5EVY9/YoDJRFIbclDQBHc6PWKGIPEp0 35GT7TWy0iTgl2c3hRKA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkvUM-0000000GAkX-3vwc; Fri, 15 Mar 2024 00:31:58 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkuTQ-0000000G036-1GYf for linux-arm-kernel@bombadil.infradead.org; Thu, 14 Mar 2024 23:26:57 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Type:Cc:To:From:Subject: Message-ID:References:Mime-Version:In-Reply-To:Date:Reply-To:Sender: Content-Transfer-Encoding:Content-ID:Content-Description; bh=k1ceQ+0+7x0dggVxu3pfjgACx/CpWN/VJ25BN1jj24Q=; b=fMbvKtvXHQa25gx5SCMT09szHP TMvmOO7UvKOqik8uxhBQsCSjm/z3TpENigfhvqFCh5wy2GaBj531ar8hLg2cZB6vDydhk/peCxAJF TDhsfYfdttqi4X1E7HsgcvIlquvtt6XqsUBoF1mjRHBwuSxbtkVDOhYrNjj9bP5Jit7DTfGkr2Pmt lhcP0jEq/Ycz3SxWE+dVnfRlkftSN2XEr8byWvogBEp8UJwVn96CdcvrIGe6bWqO0kPjwNIQ+ToVC oBe8dUSMH3GyEOuiwPhxMOd/YI9JRJXr7iDe0KCB8Irbcm6pR7fqdx8LggQULc1mLDU1gsUhd6XRS dqjivUbg==; Received: from mail-pf1-x449.google.com ([2607:f8b0:4864:20::449]) by desiato.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkuTL-0000000Aiqp-18Jg for linux-arm-kernel@lists.infradead.org; Thu, 14 Mar 2024 23:26:54 +0000 Received: by mail-pf1-x449.google.com with SMTP id d2e1a72fcca58-6e6b27560a9so1663999b3a.1 for ; Thu, 14 Mar 2024 16:26:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1710458809; x=1711063609; darn=lists.infradead.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=k1ceQ+0+7x0dggVxu3pfjgACx/CpWN/VJ25BN1jj24Q=; b=IpSUgOvzJWye6SQ9pFtYNjOkuiejuc7kprSGnpJAp/6o7RP45KXQJlLhQanLnVktlf oX8gIGzccHodZ6Q7SiJbXv4i44/izEZ17MLPt4xglZgNZMXEY5YKKMZzGoSYdHTMfW45 Qui686llwee8xnhNshkvT2jGGMhjxU/ERDai02eCpsskC+k6aSvlXXrIyJrGLnHuEnmp GAWaWmloOEVl+wrzwZYIk21hAZIqHzhtJueRq//uNpwr47kqzKQ10NRYG7kxiuYSB1qh 344JUjQmAyvsiFShQJo04Nt4Iz1Ik9B9FAiCrB+RMBeEI11uy5xIShdocKvy/MEbRU8A Tiiw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710458809; x=1711063609; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=k1ceQ+0+7x0dggVxu3pfjgACx/CpWN/VJ25BN1jj24Q=; b=bA4EZoUJ6vgu4A9OsY8mm8lGQRNqXtlulzr+x8mGbC2aScVrEHFUaKQmzgyhuLVUR1 sJvzH4uvrY0gjx5mDaabTSbegxghLjdK1m0Zb6NfHDUsMwI7yFWIc9NkvMkdBRZyPZbc 1zwJqAEVRtd+325zfcKwx5OtQImgL2md0rtgf14GfyI+7BRRn8ykoIIMzR93RXmU/1az EHO9jaZUaoFpjeuEsytu1SV9aIXdtvf2rGtfaaV2hndL/GEioqWdfIL/dXIQQQgRTvfK 7C6y3XoaV4gggL04Xi+LtV7aTWI43zuKX5vjHNXVvrRCDwtDVNxIrY9i1u2zbxAp8/Dr zmoA== X-Gm-Message-State: AOJu0YxXHkTNlWFC769RBdmheb0Azzt3in311saHPjYq1AnuxbEWDSnU 756C1yvXS2aZCfVsGfLVd9zEAPY63yZyXgTerc8/sgL/7ktORV7X3e1wPR/jy/lb2HL5TQ6kSxt gXQ== X-Google-Smtp-Source: AGHT+IFa6Xo5alB77JWBKkmfaT2866W5+uuYd+R94MhsO58PTc0FssqvQ3Br5ekzS9Hb9uDd/sllma8cTz8= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a05:6a00:23c6:b0:6e6:c374:f104 with SMTP id g6-20020a056a0023c600b006e6c374f104mr152102pfc.0.1710458808854; Thu, 14 Mar 2024 16:26:48 -0700 (PDT) Date: Thu, 14 Mar 2024 16:26:24 -0700 In-Reply-To: <20240314232637.2538648-1-seanjc@google.com> Mime-Version: 1.0 References: <20240314232637.2538648-1-seanjc@google.com> X-Mailer: git-send-email 2.44.0.291.gc1ea87d7ee-goog Message-ID: <20240314232637.2538648-6-seanjc@google.com> Subject: [PATCH 05/18] KVM: selftests: Move platform_info_test's main assert into guest code From: Sean Christopherson To: Marc Zyngier , Oliver Upton , Paolo Bonzini , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Sean Christopherson , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Ackerley Tng X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240314_232651_745597_8936C997 X-CRM114-Status: GOOD ( 10.43 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Sean Christopherson Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org As a first step toward gracefully handling the expected #GP on RDMSR in platform_info_test, move the test's assert on the non-faulting RDMSR result into the guest itself. This will allow using a unified flow for the host userspace side of things. Signed-off-by: Sean Christopherson --- .../selftests/kvm/x86_64/platform_info_test.c | 20 +++++++++++-------- 1 file changed, 12 insertions(+), 8 deletions(-) diff --git a/tools/testing/selftests/kvm/x86_64/platform_info_test.c b/tools/testing/selftests/kvm/x86_64/platform_info_test.c index 87011965dc41..cdad7e2124c8 100644 --- a/tools/testing/selftests/kvm/x86_64/platform_info_test.c +++ b/tools/testing/selftests/kvm/x86_64/platform_info_test.c @@ -29,7 +29,9 @@ static void guest_code(void) for (;;) { msr_platform_info = rdmsr(MSR_PLATFORM_INFO); - GUEST_SYNC(msr_platform_info); + GUEST_ASSERT_EQ(msr_platform_info & MSR_PLATFORM_INFO_MAX_TURBO_RATIO, + MSR_PLATFORM_INFO_MAX_TURBO_RATIO); + GUEST_SYNC(0); asm volatile ("inc %r11"); } } @@ -42,13 +44,15 @@ static void test_msr_platform_info_enabled(struct kvm_vcpu *vcpu) vcpu_run(vcpu); TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_IO); - get_ucall(vcpu, &uc); - TEST_ASSERT(uc.cmd == UCALL_SYNC, - "Received ucall other than UCALL_SYNC: %lu", uc.cmd); - TEST_ASSERT((uc.args[1] & MSR_PLATFORM_INFO_MAX_TURBO_RATIO) == - MSR_PLATFORM_INFO_MAX_TURBO_RATIO, - "Expected MSR_PLATFORM_INFO to have max turbo ratio mask: %i.", - MSR_PLATFORM_INFO_MAX_TURBO_RATIO); + switch (get_ucall(vcpu, &uc)) { + case UCALL_SYNC: + break; + case UCALL_ABORT: + REPORT_GUEST_ASSERT(uc); + default: + TEST_FAIL("Unexpected ucall %lu", uc.cmd); + break; + } } static void test_msr_platform_info_disabled(struct kvm_vcpu *vcpu) From patchwork Thu Mar 14 23:26:25 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Christopherson X-Patchwork-Id: 13592944 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9067FC54E69 for ; Fri, 15 Mar 2024 00:32:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:Reply-To:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:From:Subject:Message-ID :References:Mime-Version:In-Reply-To:Date:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=7tWDjhcckAGNMPZHNNodpN1IXC87Wvg9mYDfsyRfE3A=; b=C4Tfdn7B1MsLI/ f2NerxMw8OChTIbQIvDShRBoCwyksSLTgA2+6o6Wb8rZ7F23KpkUEmn3oTzRy+xlU174FewvqVejB i6Nal9xZwnqN8xh0YE3m2kvdZMuHmGgLk304QVxB2q32DitpmMuefo483RW5V7kLzcRzeZeM7ZqCp 4dolUatNy0wbSWRLRl5UtgpDkrV3VBI/zhwvDHbVFENpytkKQt94za9iG7xZkbCBtJfBzkn+775JE wVZNnzM2LgX0xvjQ1phiOytj8FxaQAEsfMOxtLvjhDcwQhwLbW5O4lww/monSKN5zIIPBl9bvrPJ4 8Wig/q8oV1wbRnp1iL6w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkvUM-0000000GAkS-1XSy; Fri, 15 Mar 2024 00:31:58 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkuTS-0000000G03n-0KJs for linux-arm-kernel@bombadil.infradead.org; Thu, 14 Mar 2024 23:26:58 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Type:Cc:To:From:Subject: Message-ID:References:Mime-Version:In-Reply-To:Date:Reply-To:Sender: Content-Transfer-Encoding:Content-ID:Content-Description; bh=oB3ZfcSJ5G1gMIeNmqomMwFWPYu8/DXA5zj+kntGd24=; b=P0Am12kZIyzW81bEokVH/eRVVP 7t7BQiElkcpCnNUyAPF0qXcOKc5ztk38QaOZ7dbu2syvbieRn6PrQw7ODc9tu6q3soJKnCziUEta5 9TR3iyzOm0vk6KV9YBjCUB05jFwVO91IpodwCP3L7OhDeCsA30jnNPZYRrvHayPkt/fCAWdiySURM LHaQYLbBPSSWvCp18JKDysu3LhBkeOtbz5n196qpLzrfaEkeaFSes1pMtv6kBjKtrdCXdVn5pgrJ2 nxMtGVgPgTdP9Gcz3KUvdIXcfwPtzSAAWlP3cV3b9blQjug5hMTrwqXW9Wu+J4zf28Vk4FWIEMcut 0Bzb/OYA==; Received: from mail-yw1-x1149.google.com ([2607:f8b0:4864:20::1149]) by desiato.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkuTO-0000000AisE-0rjl for linux-arm-kernel@lists.infradead.org; Thu, 14 Mar 2024 23:26:56 +0000 Received: by mail-yw1-x1149.google.com with SMTP id 00721157ae682-60ccc3cfa39so21508387b3.2 for ; Thu, 14 Mar 2024 16:26:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1710458811; x=1711063611; darn=lists.infradead.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=oB3ZfcSJ5G1gMIeNmqomMwFWPYu8/DXA5zj+kntGd24=; b=hD0R0Hw6bKBwD4CjkcBv63qr5b+x/mxodEMAV6InvItyTd3g4LpL+HtwN3EUVFeFeJ UjJ4gjBqwF69fgaVYSkMVX3Jsdn9HTeh9DOLHxNV0eYueE0YgGK4W76+HJA80VA1Bwpr MNHQhjq8PKyDjEoGaR3jOmJzLafOqMo5KwHJOxe/o5FYsJZEHqTp70EBABMN/Ve0Ukj0 QoAhyPGzQk7gzRyhxCsQ/rDKBBdzrjOgGCKaS9iUSDxg/XMVxcdY6S4pGZ7a2iMwOmvd TbFNdT5mT96VtMH6B+nlG/sbQylCRQJ3ikfDJREfBkzKvAtos5Jc28iki14/9dNnr7tD ZGDg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710458811; x=1711063611; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=oB3ZfcSJ5G1gMIeNmqomMwFWPYu8/DXA5zj+kntGd24=; b=RCRFYgxb5j5Ac/NDVXE3pXJRviRaR5wrV159O9MPfrbQhqVbFu1pUXcq+hzJHum5O0 D3W9sgNHzRsgAPiLALa7SWENO5LNbntI55sFgEAP8NWMltrBOyhBiSXPSJHPIic8/77t GYrKXbNf9tvUS+7xftvvycbSICJ8zJ09JXVtUK6xdw/vV/w9hOvk6edKVCx8yJhe0ZnT fC9kBhEKC/9lLXSKLvbcgfSymx2rkHqLyLCnbMBJSQTFPxnuFudnLxFt4hb7Y5ffgMbI BUWlvS6THb54I11hsZ4MdheeZrFHRenqDnHU836/1xQoa/KwFihUhVWmykQDrgdvxEkq jsBw== X-Gm-Message-State: AOJu0Yw2PmkK1MXurPwH7FCB0o2EDXjbz8H1YRWV0YOBmWrxNok7LGaT z4WmSy/DowT1pqEePhNuPFe/0K+YGBQWyiLcB5PGbroT6Yi2SjEKqOo5jh7FS5i6EBiUDys6eU8 q7g== X-Google-Smtp-Source: AGHT+IHtBiTnO989+qzsWd/+jqel2tzrmASDdXlpQSt9dAnbWaw8Q3AQpPaqLMF1m7pFqRCnpY9R0RVtBJU= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a0d:e288:0:b0:60a:56c2:a61f with SMTP id l130-20020a0de288000000b0060a56c2a61fmr797989ywe.8.1710458810918; Thu, 14 Mar 2024 16:26:50 -0700 (PDT) Date: Thu, 14 Mar 2024 16:26:25 -0700 In-Reply-To: <20240314232637.2538648-1-seanjc@google.com> Mime-Version: 1.0 References: <20240314232637.2538648-1-seanjc@google.com> X-Mailer: git-send-email 2.44.0.291.gc1ea87d7ee-goog Message-ID: <20240314232637.2538648-7-seanjc@google.com> Subject: [PATCH 06/18] KVM: selftests: Rework platform_info_test to actually verify #GP From: Sean Christopherson To: Marc Zyngier , Oliver Upton , Paolo Bonzini , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Sean Christopherson , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Ackerley Tng X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240314_232654_766753_C2EC93D5 X-CRM114-Status: GOOD ( 11.65 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Sean Christopherson Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Rework platform_info_test to actually handle and verify the expected #GP on RDMSR when the associated KVM capability is disabled. Currently, the test _deliberately_ doesn't handle the #GP, and instead lets it escalated to a triple fault shutdown. In addition to verifying that KVM generates the correct fault, handling the #GP will be necessary (without even more shenanigans) when a future change to the core KVM selftests library configures the IDT and exception handlers by default (the test subtly relies on the IDT limit being '0'). Signed-off-by: Sean Christopherson --- .../selftests/kvm/x86_64/platform_info_test.c | 66 +++++++++---------- 1 file changed, 33 insertions(+), 33 deletions(-) diff --git a/tools/testing/selftests/kvm/x86_64/platform_info_test.c b/tools/testing/selftests/kvm/x86_64/platform_info_test.c index cdad7e2124c8..6300bb70f028 100644 --- a/tools/testing/selftests/kvm/x86_64/platform_info_test.c +++ b/tools/testing/selftests/kvm/x86_64/platform_info_test.c @@ -26,40 +26,18 @@ static void guest_code(void) { uint64_t msr_platform_info; + uint8_t vector; - for (;;) { - msr_platform_info = rdmsr(MSR_PLATFORM_INFO); - GUEST_ASSERT_EQ(msr_platform_info & MSR_PLATFORM_INFO_MAX_TURBO_RATIO, - MSR_PLATFORM_INFO_MAX_TURBO_RATIO); - GUEST_SYNC(0); - asm volatile ("inc %r11"); - } -} + GUEST_SYNC(true); + msr_platform_info = rdmsr(MSR_PLATFORM_INFO); + GUEST_ASSERT_EQ(msr_platform_info & MSR_PLATFORM_INFO_MAX_TURBO_RATIO, + MSR_PLATFORM_INFO_MAX_TURBO_RATIO); -static void test_msr_platform_info_enabled(struct kvm_vcpu *vcpu) -{ - struct ucall uc; + GUEST_SYNC(false); + vector = rdmsr_safe(MSR_PLATFORM_INFO, &msr_platform_info); + GUEST_ASSERT_EQ(vector, GP_VECTOR); - vm_enable_cap(vcpu->vm, KVM_CAP_MSR_PLATFORM_INFO, true); - vcpu_run(vcpu); - TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_IO); - - switch (get_ucall(vcpu, &uc)) { - case UCALL_SYNC: - break; - case UCALL_ABORT: - REPORT_GUEST_ASSERT(uc); - default: - TEST_FAIL("Unexpected ucall %lu", uc.cmd); - break; - } -} - -static void test_msr_platform_info_disabled(struct kvm_vcpu *vcpu) -{ - vm_enable_cap(vcpu->vm, KVM_CAP_MSR_PLATFORM_INFO, false); - vcpu_run(vcpu); - TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_SHUTDOWN); + GUEST_DONE(); } int main(int argc, char *argv[]) @@ -67,16 +45,38 @@ int main(int argc, char *argv[]) struct kvm_vcpu *vcpu; struct kvm_vm *vm; uint64_t msr_platform_info; + struct ucall uc; TEST_REQUIRE(kvm_has_cap(KVM_CAP_MSR_PLATFORM_INFO)); vm = vm_create_with_one_vcpu(&vcpu, guest_code); + vm_init_descriptor_tables(vm); + vcpu_init_descriptor_tables(vcpu); + msr_platform_info = vcpu_get_msr(vcpu, MSR_PLATFORM_INFO); vcpu_set_msr(vcpu, MSR_PLATFORM_INFO, msr_platform_info | MSR_PLATFORM_INFO_MAX_TURBO_RATIO); - test_msr_platform_info_enabled(vcpu); - test_msr_platform_info_disabled(vcpu); + + for (;;) { + vcpu_run(vcpu); + TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_IO); + + switch (get_ucall(vcpu, &uc)) { + case UCALL_SYNC: + vm_enable_cap(vm, KVM_CAP_MSR_PLATFORM_INFO, uc.args[1]); + break; + case UCALL_DONE: + goto done; + case UCALL_ABORT: + REPORT_GUEST_ASSERT(uc); + default: + TEST_FAIL("Unexpected ucall %lu", uc.cmd); + break; + } + } + +done: vcpu_set_msr(vcpu, MSR_PLATFORM_INFO, msr_platform_info); kvm_vm_free(vm); From patchwork Thu Mar 14 23:26:26 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Christopherson X-Patchwork-Id: 13592945 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5C0D5C54E6A for ; Fri, 15 Mar 2024 00:32:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:Reply-To:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:From:Subject:Message-ID :References:Mime-Version:In-Reply-To:Date:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=8L5WrB2/z6TOo0agpjkGCMKiutfLS6g6otExlVSKWz4=; b=el56O/OEmix2OG EOoYhmZ4ma9WgLo9reh3wtKI5DSYcnZ5FMRAQLSbd7a6OihZ498M2DHABv8n5ByhZ3e+M1boVJTO4 7UVMDe9Gh7a00EKLH1SJG8buiZmsSP9jT76WEuqMELyj46Zb4yt0m3A8BOAjXJ1Dd+B7l7IHmHee+ 7YpYeWQTlXZJjeL3Z6fgKBdyOc7I0H7OM/MSXovkvVxdciUCUJNBrRX4of+VbNLTrCsSKB0Yecq91 QwZ3zKK3L9RwTKpY6W+vw6wcOQN/cC40FeD4K77xXJTA7cVkB1BJmGlwz5F5i7nYkhT/s/2G1Ur6D cXb2DVaVx2D3aGZKL4uw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkvUQ-0000000GAn8-1wpL; Fri, 15 Mar 2024 00:32:02 +0000 Received: from mail-yb1-xb4a.google.com ([2607:f8b0:4864:20::b4a]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkuTR-0000000G013-0E5o for linux-arm-kernel@lists.infradead.org; Thu, 14 Mar 2024 23:27:05 +0000 Received: by mail-yb1-xb4a.google.com with SMTP id 3f1490d57ef6-dcc0bcf9256so2013251276.3 for ; Thu, 14 Mar 2024 16:26:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1710458813; x=1711063613; darn=lists.infradead.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=bGD1oHLzIwlI71Um3uWf9rz8YDkt0fT9aZFmZxidv5s=; b=PAUzV/vSfJRkljJvJJVdoBy+eFTx3Mo8vYwMHSjW4oBFmGYiSPZ/mN6KL43WekCIWj BBAPZuoiekVIEhGl4cVktgdly9h0Az7rvg1hbYPsjyZZ+Ja9I9DARa9DTnLnanVfD7Xu gfoLjyjpk9Ic9B5lR5sofpb6gdE2XtgqL2GveyQTNtrcrcr4KiUPZMt5SxZVm2w4TmM0 BwLr/aCi2flTlHHUxEx/6pGeW4RdIJwjGlmfRs3vZ3jrvzi1wwKjtYFE1lVZc5Di1I0m 4QgP6fHLPsky4uiOTm6K0Be0WRANahL3Ol/VssVJZtWQVhCGay0vOCB/4geliE1nAZZW DjHw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710458813; x=1711063613; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=bGD1oHLzIwlI71Um3uWf9rz8YDkt0fT9aZFmZxidv5s=; b=uPpS2MPvlMIv48K3Ezei/vuFVIOaYDAurHvKO9WTaTrsGMnM7LdIwn9/AQYm/FY6li 6R/6qI27/C9VVehLkQvkfiA1Wm/dNZ9JPpslOFk0bfOaLi2Y+CXXUZ3Nws/hgm6Mx3Q7 MOG7Bvb5uewzFWB0sc3XQUYTA75ENOm8744SSvyjCrFfiMbOldVUQa+fNkVhVcQMnNuG yCxzVulEKw2d+x/eu4xKKpFuEumhyERVtb3wugMFEjRFODbhx5Y1CXm0NONqFrrsXMUa wGL92RE5RW6gtC5zJJvYG2rQXf4KzbXhVmRHAHb6C/2uo/KPXXj6SoBpTiwZ2xM5f3e4 Y6FA== X-Gm-Message-State: AOJu0YyDAxs3pv5R0toOa2kluCTMn1U+ZrBndu70lInQzkUVsJT9QuN4 2zSYyIbvUv9HKcPo/TOAV/PCfL6t8rallcBqHJubUICngoRlQ2mtjpDS7C4bbyYGb55WLDe47WW pFA== X-Google-Smtp-Source: AGHT+IEf2SHyoW7Ci/nXvsu/vvl6dD716Be1qw4xm14NPqmYsKQJNpbDJU6sbwjkwsuGTYDcc+4TPOzUy5A= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a05:6902:1b85:b0:dbe:30cd:8fcb with SMTP id ei5-20020a0569021b8500b00dbe30cd8fcbmr188618ybb.0.1710458812732; Thu, 14 Mar 2024 16:26:52 -0700 (PDT) Date: Thu, 14 Mar 2024 16:26:26 -0700 In-Reply-To: <20240314232637.2538648-1-seanjc@google.com> Mime-Version: 1.0 References: <20240314232637.2538648-1-seanjc@google.com> X-Mailer: git-send-email 2.44.0.291.gc1ea87d7ee-goog Message-ID: <20240314232637.2538648-8-seanjc@google.com> Subject: [PATCH 07/18] KVM: selftests: Explicitly clobber the IDT in the "delete memslot" testcase From: Sean Christopherson To: Marc Zyngier , Oliver Upton , Paolo Bonzini , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Sean Christopherson , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Ackerley Tng X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240314_162657_773322_54695713 X-CRM114-Status: GOOD ( 13.98 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Sean Christopherson Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Explicitly clobber the guest IDT in the "delete memslot" test, which expects the deleted memslot to result in either a KVM emulation error, or a triple fault shutdown. A future change to the core selftests library will configuring the guest IDT and exception handlers by default, i.e. will install a guest #PF handler and put the guest into an infinite #NPF loop (the guest hits a !PRESENT SPTE when trying to vector a #PF, and KVM reinjects the #PF without fixing the #NPF, because there is no memslot). Note, it's not clear whether or not KVM's behavior is reasonable in this case, e.g. arguably KVM should try (and fail) to emulate in response to the #NPF. But barring a goofy/broken userspace, this scenario will likely never happen in practice. Punt the KVM investigation to the future. Signed-off-by: Sean Christopherson --- tools/testing/selftests/kvm/set_memory_region_test.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/tools/testing/selftests/kvm/set_memory_region_test.c b/tools/testing/selftests/kvm/set_memory_region_test.c index 06b43ed23580..9b814ea16eb4 100644 --- a/tools/testing/selftests/kvm/set_memory_region_test.c +++ b/tools/testing/selftests/kvm/set_memory_region_test.c @@ -221,8 +221,20 @@ static void test_move_memory_region(void) static void guest_code_delete_memory_region(void) { + struct desc_ptr idt; uint64_t val; + /* + * Clobber the IDT so that a #PF due to the memory region being deleted + * escalates to triple-fault shutdown. Because the memory region is + * deleted, there will be no valid mappings. As a result, KVM will + * repeatedly intercepts the state-2 page fault that occurs when trying + * to vector the guest's #PF. I.e. trying to actually handle the #PF + * in the guest will never succeed, and so isn't an option. + */ + memset(&idt, 0, sizeof(idt)); + __asm__ __volatile__("lidt %0" :: "m"(idt)); + GUEST_SYNC(0); /* Spin until the memory region is deleted. */ From patchwork Thu Mar 14 23:26:27 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Christopherson X-Patchwork-Id: 13592947 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 38CF3C54E6E for ; Fri, 15 Mar 2024 00:32:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:Reply-To:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:From:Subject:Message-ID :References:Mime-Version:In-Reply-To:Date:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=tABv3TeDqwqSuqKePdd+lSOmbKelu+MAggCufYLgN0k=; b=zJnveXH7bkEUvE YsXWbeA8W5ZeC3EDf+omhMT+zHLDfqJIWcW69YqP4cNKL4q02adnWDCyOwJbZQqPldPttNnFjm2Ms Xo3ZxWwca7v5t6RrC1Or9bN0VezBIKKOdKUbHcMlm+w/m1SRTYv7O1bSz61HoV2NRV0d2Dep1MEF8 gG5sFDAevW74MvL9MPC/MyDKYbzUKygU6DDnMNsuf0205eZEgQaoH4ygz30eC3zPpqCODrmKH4q8c aUO57FHm1biup3fix90sGTumcZC6KbwpGp8nGuyFNaAkcC2oql107/7kLNdDNvUUK53Eh8sH9tRO4 okk1vd1cPtUoSjebuVdg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkvUO-0000000GAlh-1vJk; Fri, 15 Mar 2024 00:32:00 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkuTW-0000000G07K-45Qf for linux-arm-kernel@bombadil.infradead.org; Thu, 14 Mar 2024 23:27:03 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Type:Cc:To:From:Subject: Message-ID:References:Mime-Version:In-Reply-To:Date:Reply-To:Sender: Content-Transfer-Encoding:Content-ID:Content-Description; bh=cYt0UxRFPQqzYn7Vpx6g+tvPS4Iw5cklVXoJXhkYY7M=; b=YL8SlqqbnDggSycKbyxLhNPQPl 5gClNW+05op5CKU8jY3hMXSZKx/Ed1rPpMgxQKPVf3Z6E+3FbzXO82slnn+roywREp24lTLy2qk7h 2gt14KYAnngelwlMC0pR4CcXNEhWGjEUEttTMD1HAQcS0nwreDD2H6Ber6n5pdBSO4EtrKJuP+Q2O inUnANN1YC2a7ajgWNha5rpvdAG1TzrYVhAyrukQ9bix8AfyiAkB7+ur0E27iYBpX9fBeOlZM/FrI a8rS7etgEMA1yVY949zJTxSkAx+yMRQm3P9C33zE/p3LubDs23CRM2hwG4uZDD42vfI1RarCaP+V5 gi6DdbAQ==; Received: from mail-pj1-x104a.google.com ([2607:f8b0:4864:20::104a]) by desiato.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkuTR-0000000Ait5-3Woi for linux-arm-kernel@lists.infradead.org; Thu, 14 Mar 2024 23:27:01 +0000 Received: by mail-pj1-x104a.google.com with SMTP id 98e67ed59e1d1-29c4b161c80so1283285a91.2 for ; Thu, 14 Mar 2024 16:26:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1710458815; x=1711063615; darn=lists.infradead.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=cYt0UxRFPQqzYn7Vpx6g+tvPS4Iw5cklVXoJXhkYY7M=; b=xvrHfTip3GJvv1E1O/qUaettdabaX87HV7uew3Zm/xiKv4CuLOMygvX3eEUpvguLJQ 49RR16y5tINrcs4JD5dwpoMwiOy/H3vpE3V5J43aFSOKU6O8tYQgLau2bL/P07VTFOZC B9pC/QtagPBrK7F/bB8WYiuk33axgzvlZjfZ31UHlkN6LOzXT2Q76LGDxfQ0uFXrZMai w7ipQIVKVDrq9o0aG7J+VeE3pr+ZsmJjsZ4eMG/cpuKiX8Lspvr9b878MCy3sGaSmJ81 3Y8bML4mu2kVnEI6E1PfuYg7fMnl1O38L3X67ckUO6fs0KL+yPAUdTFKWYEMW5QEG8Zd +wfA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710458815; x=1711063615; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=cYt0UxRFPQqzYn7Vpx6g+tvPS4Iw5cklVXoJXhkYY7M=; b=DQCG3tniLXyCJlc2w7gid7cn3F19ROoOAXNSJjc/6ZHhTBBVwf0TF0YTcXG23FgwZI D7XQVuXtaniRYSAYRgcfb6RBg5NOqYpzxs5vMTiUe0KifyuR1o3zXuzWQePLLsne5nxk RfotcOtDQIvqlptIoFaWifGUYvqlpzLsnsgcfmv/Ddd0AUdl28cKpfMKmbFdK+T5MSQD s7N6kwTsLDpFTWmCsKQX5k2m0AIX2Tf2O8HLhleSCZgbhHrYqEgabGP6ROQrW/oAYIbm o+kghB0wP89u82GqSXYovf1NiDXx2Nra3ItASqO2n4P3VFKQgNVzT7DHiZl4lD5JndMR wgHw== X-Gm-Message-State: AOJu0YzzFYRTqki3vYovZ14kvOxAxyTDHDX1yUL2eUfnFJe+6YAay4v3 V0mBi8HIGXMbD51hyn9qoBChmwr3oItN5RIPI/xtOhI9hCMMBt67mGj4orQIsUK2w2nA5gD16So f7Q== X-Google-Smtp-Source: AGHT+IFrr0eJ7KJEPLhApMpHRts0gPRzkT9mvlTzswaB+7MaMjHLiz+sM47iUPlzqqkPyfHstCgHwuftTuc= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a17:90a:bc94:b0:29b:c2b7:7d29 with SMTP id x20-20020a17090abc9400b0029bc2b77d29mr3418pjr.9.1710458814574; Thu, 14 Mar 2024 16:26:54 -0700 (PDT) Date: Thu, 14 Mar 2024 16:26:27 -0700 In-Reply-To: <20240314232637.2538648-1-seanjc@google.com> Mime-Version: 1.0 References: <20240314232637.2538648-1-seanjc@google.com> X-Mailer: git-send-email 2.44.0.291.gc1ea87d7ee-goog Message-ID: <20240314232637.2538648-9-seanjc@google.com> Subject: [PATCH 08/18] KVM: selftests: Move x86's descriptor table helpers "up" in processor.c From: Sean Christopherson To: Marc Zyngier , Oliver Upton , Paolo Bonzini , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Sean Christopherson , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Ackerley Tng X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240314_232658_015489_6ABFEDBC X-CRM114-Status: GOOD ( 15.14 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Sean Christopherson Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Move x86's various descriptor table helpers in processor.c up above kvm_arch_vm_post_create() and vcpu_setup() so that the helpers can be made static and invoked from the aforementioned functions. No functional change intended. Signed-off-by: Sean Christopherson Reviewed-by: Ackerley Tng --- .../selftests/kvm/lib/x86_64/processor.c | 191 +++++++++--------- 1 file changed, 95 insertions(+), 96 deletions(-) diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c index eaeba907bb53..3640d3290f0a 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/processor.c +++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c @@ -540,6 +540,21 @@ static void kvm_setup_tss_64bit(struct kvm_vm *vm, struct kvm_segment *segp, kvm_seg_fill_gdt_64bit(vm, segp); } +void vcpu_init_descriptor_tables(struct kvm_vcpu *vcpu) +{ + struct kvm_vm *vm = vcpu->vm; + struct kvm_sregs sregs; + + vcpu_sregs_get(vcpu, &sregs); + sregs.idt.base = vm->arch.idt; + sregs.idt.limit = NUM_INTERRUPTS * sizeof(struct idt_entry) - 1; + sregs.gdt.base = vm->arch.gdt; + sregs.gdt.limit = getpagesize() - 1; + kvm_seg_set_kernel_data_64bit(NULL, DEFAULT_DATA_SELECTOR, &sregs.gs); + vcpu_sregs_set(vcpu, &sregs); + *(vm_vaddr_t *)addr_gva2hva(vm, (vm_vaddr_t)(&exception_handlers)) = vm->handlers; +} + static void vcpu_setup(struct kvm_vm *vm, struct kvm_vcpu *vcpu) { struct kvm_sregs sregs; @@ -572,6 +587,86 @@ static void vcpu_setup(struct kvm_vm *vm, struct kvm_vcpu *vcpu) vcpu_sregs_set(vcpu, &sregs); } +static void set_idt_entry(struct kvm_vm *vm, int vector, unsigned long addr, + int dpl, unsigned short selector) +{ + struct idt_entry *base = + (struct idt_entry *)addr_gva2hva(vm, vm->arch.idt); + struct idt_entry *e = &base[vector]; + + memset(e, 0, sizeof(*e)); + e->offset0 = addr; + e->selector = selector; + e->ist = 0; + e->type = 14; + e->dpl = dpl; + e->p = 1; + e->offset1 = addr >> 16; + e->offset2 = addr >> 32; +} + +static bool kvm_fixup_exception(struct ex_regs *regs) +{ + if (regs->r9 != KVM_EXCEPTION_MAGIC || regs->rip != regs->r10) + return false; + + if (regs->vector == DE_VECTOR) + return false; + + regs->rip = regs->r11; + regs->r9 = regs->vector; + regs->r10 = regs->error_code; + return true; +} + +void route_exception(struct ex_regs *regs) +{ + typedef void(*handler)(struct ex_regs *); + handler *handlers = (handler *)exception_handlers; + + if (handlers && handlers[regs->vector]) { + handlers[regs->vector](regs); + return; + } + + if (kvm_fixup_exception(regs)) + return; + + ucall_assert(UCALL_UNHANDLED, + "Unhandled exception in guest", __FILE__, __LINE__, + "Unhandled exception '0x%lx' at guest RIP '0x%lx'", + regs->vector, regs->rip); +} + +void vm_init_descriptor_tables(struct kvm_vm *vm) +{ + extern void *idt_handlers; + int i; + + vm->arch.idt = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA); + vm->handlers = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA); + /* Handlers have the same address in both address spaces.*/ + for (i = 0; i < NUM_INTERRUPTS; i++) + set_idt_entry(vm, i, (unsigned long)(&idt_handlers)[i], 0, + DEFAULT_CODE_SELECTOR); +} + +void vm_install_exception_handler(struct kvm_vm *vm, int vector, + void (*handler)(struct ex_regs *)) +{ + vm_vaddr_t *handlers = (vm_vaddr_t *)addr_gva2hva(vm, vm->handlers); + + handlers[vector] = (vm_vaddr_t)handler; +} + +void assert_on_unhandled_exception(struct kvm_vcpu *vcpu) +{ + struct ucall uc; + + if (get_ucall(vcpu, &uc) == UCALL_UNHANDLED) + REPORT_GUEST_ASSERT(uc); +} + void kvm_arch_vm_post_create(struct kvm_vm *vm) { vm_create_irqchip(vm); @@ -1087,102 +1182,6 @@ void kvm_init_vm_address_properties(struct kvm_vm *vm) } } -static void set_idt_entry(struct kvm_vm *vm, int vector, unsigned long addr, - int dpl, unsigned short selector) -{ - struct idt_entry *base = - (struct idt_entry *)addr_gva2hva(vm, vm->arch.idt); - struct idt_entry *e = &base[vector]; - - memset(e, 0, sizeof(*e)); - e->offset0 = addr; - e->selector = selector; - e->ist = 0; - e->type = 14; - e->dpl = dpl; - e->p = 1; - e->offset1 = addr >> 16; - e->offset2 = addr >> 32; -} - - -static bool kvm_fixup_exception(struct ex_regs *regs) -{ - if (regs->r9 != KVM_EXCEPTION_MAGIC || regs->rip != regs->r10) - return false; - - if (regs->vector == DE_VECTOR) - return false; - - regs->rip = regs->r11; - regs->r9 = regs->vector; - regs->r10 = regs->error_code; - return true; -} - -void route_exception(struct ex_regs *regs) -{ - typedef void(*handler)(struct ex_regs *); - handler *handlers = (handler *)exception_handlers; - - if (handlers && handlers[regs->vector]) { - handlers[regs->vector](regs); - return; - } - - if (kvm_fixup_exception(regs)) - return; - - ucall_assert(UCALL_UNHANDLED, - "Unhandled exception in guest", __FILE__, __LINE__, - "Unhandled exception '0x%lx' at guest RIP '0x%lx'", - regs->vector, regs->rip); -} - -void vm_init_descriptor_tables(struct kvm_vm *vm) -{ - extern void *idt_handlers; - int i; - - vm->arch.idt = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA); - vm->handlers = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA); - /* Handlers have the same address in both address spaces.*/ - for (i = 0; i < NUM_INTERRUPTS; i++) - set_idt_entry(vm, i, (unsigned long)(&idt_handlers)[i], 0, - DEFAULT_CODE_SELECTOR); -} - -void vcpu_init_descriptor_tables(struct kvm_vcpu *vcpu) -{ - struct kvm_vm *vm = vcpu->vm; - struct kvm_sregs sregs; - - vcpu_sregs_get(vcpu, &sregs); - sregs.idt.base = vm->arch.idt; - sregs.idt.limit = NUM_INTERRUPTS * sizeof(struct idt_entry) - 1; - sregs.gdt.base = vm->arch.gdt; - sregs.gdt.limit = getpagesize() - 1; - kvm_seg_set_kernel_data_64bit(NULL, DEFAULT_DATA_SELECTOR, &sregs.gs); - vcpu_sregs_set(vcpu, &sregs); - *(vm_vaddr_t *)addr_gva2hva(vm, (vm_vaddr_t)(&exception_handlers)) = vm->handlers; -} - -void vm_install_exception_handler(struct kvm_vm *vm, int vector, - void (*handler)(struct ex_regs *)) -{ - vm_vaddr_t *handlers = (vm_vaddr_t *)addr_gva2hva(vm, vm->handlers); - - handlers[vector] = (vm_vaddr_t)handler; -} - -void assert_on_unhandled_exception(struct kvm_vcpu *vcpu) -{ - struct ucall uc; - - if (get_ucall(vcpu, &uc) == UCALL_UNHANDLED) - REPORT_GUEST_ASSERT(uc); -} - const struct kvm_cpuid_entry2 *get_cpuid_entry(const struct kvm_cpuid2 *cpuid, uint32_t function, uint32_t index) { From patchwork Thu Mar 14 23:26:28 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Christopherson X-Patchwork-Id: 13592922 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D1AD3C54E60 for ; Thu, 14 Mar 2024 23:30:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:Reply-To:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:From:Subject:Message-ID :References:Mime-Version:In-Reply-To:Date:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=gIMQNDeHtddYkaV+vFmlV9GlHTs4y4rTKvMVPqUAZIc=; b=3ezMEwtcZHxnbc P23e70dHz0YlI09W0ISVDxGHZHIOX4l/p6ixSlHWZQzCpWIB1oF+D+s3W8GowzzUPgJO1155YQWrl yM9fCtCciGqDF8Jx/6cPpfDw1HF9gZpTgYPF3BgKbojUksRIsVGZ9o51xqjYKHRPKAml2oaU4Gaar Jdb7N18hSA6Tcm0tT7u7g2w/CyHLTHJ5iFanWEApXhWe6QYd0Ka7G/fmwFW0A1ilPWRzAY4e4mUlP 5bHob5p5ejBsrGvp7ekOgIErajufbbE+MC5301jVVw74Dniy3d8q7dr2JbuasNMcv2jdgv1SnV8zk B/aFFHCntk/nxjdVB2LA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkuWG-0000000G1zf-1EOZ; Thu, 14 Mar 2024 23:29:52 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkuTg-0000000G0Fy-1ur6 for linux-arm-kernel@bombadil.infradead.org; Thu, 14 Mar 2024 23:27:12 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Type:Cc:To:From:Subject: Message-ID:References:Mime-Version:In-Reply-To:Date:Reply-To:Sender: Content-Transfer-Encoding:Content-ID:Content-Description; bh=pTVZRdXyCVTnuQGgLheWcCsaF7bim4F1PK5VbaXQ+t0=; b=QGoYfdq/EV7ErCBf+Ykl7R1b7Q ThO3/3lLQQt3EAphiMX52IiKgln/Zxpe/wLt1kz/p/AnZHLvTP2ROwrVGM9beKsWr2lxlcorxeifW h9NvBdL9k8LFMlG4XvUjIR2EaoUb1MkVGWCtBsNn30X/9LMXByhlBUAexNfdWf4Hg2E9Dj6W/HKaT EacO0tNJjJ32xctqBr6c633a2oor1x9NR9pqsNMjYNkMQjYyrzOpRF2Ub7IectdH/ToUmuTUyjqq0 2Y56Ud4+uA+H7HMRoY8uqzkoU8Zkh6C2MFPlhegR8MJLHwdOGSi4k19ePhKsuWgpArbKCLawVwqHE 5x1838AA==; Received: from mail-pl1-x64a.google.com ([2607:f8b0:4864:20::64a]) by desiato.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkuTV-0000000Aitw-3Prs for linux-arm-kernel@lists.infradead.org; Thu, 14 Mar 2024 23:27:05 +0000 Received: by mail-pl1-x64a.google.com with SMTP id d9443c01a7336-1dd9ffd1e99so15183325ad.3 for ; Thu, 14 Mar 2024 16:27:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1710458816; x=1711063616; darn=lists.infradead.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=pTVZRdXyCVTnuQGgLheWcCsaF7bim4F1PK5VbaXQ+t0=; b=1NjkZ5h9AIzkZ9pGmhKJ9cwuhNRr+T6s0koe4iUrHH7IiXjTOh6aeI/PiwzHVFLhai SeHzZzmVSHfO0UrBMq5vOHupvLKl7XiPAH+ybG54su3vWxh02s2bb0WhvFxC1wyd2zwM igCACUJXY6jB39DZN3NwOwb2kTWIK1BRs1HvA4aihQ2Lenwz9BnVe8cueFemhx2e8+W1 C/kCrbkdJE7K8J+tFOjN/HGVXvlU4hv1hbLAv77seoJIhGjRXUZ70cAyxdfHf+1Uw2ua QBTMR4tUSMuw4vVJnAMIR/SmYSX6Y1zLbRo7/2WfdLcwuOBydDnMn2GiNMQ+QuPVEIqu F3ng== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710458816; x=1711063616; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=pTVZRdXyCVTnuQGgLheWcCsaF7bim4F1PK5VbaXQ+t0=; b=RKSNz/jFJrO9iBJrRlp43ooz/cq2XZAczvjTOecPdHSFnrf6oOOtpSFupOHhiAtY2G vLzdOhrm8IR3WWj/lbLpyubhRTbHtY2W4DHQbO3D0Kz0QaUWNZDMsi1VhXjsdnV6TxCc ydNLjhHlk5X+MsLb+5kmuXCF7Y+OOyXp+weHxq4rjlvlPVT3roxVdrxE5WBwmMiv5bQ1 m+Sp/0s4z8kDL0+GcAJTVS3mAwvekXXESS4BoRI1D0v2lDu5l0ED36NUmXD2YcdyIFEI dIYlZsWzQmmiPLRsl2T8pPDXTilvjxFjY5d5G+HM/Ys99AkNbutBJkUMeBtmPj/maPow RNZg== X-Gm-Message-State: AOJu0Ywml7cQ/K0s5fgcgt5mHk6sKwozBafa8YNxAmqGLXBxzJ/hvtYe p//W4RvqZX/HQPrVcvXIsVszClc3rG1qGBwXGL7+9kZbOW++bO2ouDnuCyFSWHzPYXxpykLHno+ z/w== X-Google-Smtp-Source: AGHT+IH7S37OXvdlnB5BIBxBCKNBsO+Ay6MTHPEIT19iC3iZ0sD1f7oPcvL0HSDVvR5Ys+olPa2yoMgb6k0= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a17:902:d4ca:b0:1dd:a324:30b5 with SMTP id o10-20020a170902d4ca00b001dda32430b5mr9294plg.9.1710458816466; Thu, 14 Mar 2024 16:26:56 -0700 (PDT) Date: Thu, 14 Mar 2024 16:26:28 -0700 In-Reply-To: <20240314232637.2538648-1-seanjc@google.com> Mime-Version: 1.0 References: <20240314232637.2538648-1-seanjc@google.com> X-Mailer: git-send-email 2.44.0.291.gc1ea87d7ee-goog Message-ID: <20240314232637.2538648-10-seanjc@google.com> Subject: [PATCH 09/18] KVM: selftests: Rename x86's vcpu_setup() to vcpu_init_sregs() From: Sean Christopherson To: Marc Zyngier , Oliver Upton , Paolo Bonzini , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Sean Christopherson , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Ackerley Tng X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240314_232702_009962_B811E24F X-CRM114-Status: GOOD ( 11.22 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Sean Christopherson Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Rename vcpu_setup() to be more descriptive and precise, there is a whole lot of "setup" that is done for a vCPU that isn't in said helper. No functional change intended. Signed-off-by: Sean Christopherson Reviewed-by: Ackerley Tng --- tools/testing/selftests/kvm/lib/x86_64/processor.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c index 3640d3290f0a..d6bfe96a6a77 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/processor.c +++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c @@ -555,7 +555,7 @@ void vcpu_init_descriptor_tables(struct kvm_vcpu *vcpu) *(vm_vaddr_t *)addr_gva2hva(vm, (vm_vaddr_t)(&exception_handlers)) = vm->handlers; } -static void vcpu_setup(struct kvm_vm *vm, struct kvm_vcpu *vcpu) +static void vcpu_init_sregs(struct kvm_vm *vm, struct kvm_vcpu *vcpu) { struct kvm_sregs sregs; @@ -716,7 +716,7 @@ struct kvm_vcpu *vm_arch_vcpu_add(struct kvm_vm *vm, uint32_t vcpu_id) vcpu = __vm_vcpu_add(vm, vcpu_id); vcpu_init_cpuid(vcpu, kvm_get_supported_cpuid()); - vcpu_setup(vm, vcpu); + vcpu_init_sregs(vm, vcpu); /* Setup guest general purpose registers */ vcpu_regs_get(vcpu, ®s); From patchwork Thu Mar 14 23:26:29 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Christopherson X-Patchwork-Id: 13592949 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A3213C54E69 for ; Fri, 15 Mar 2024 00:32:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:Reply-To:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:From:Subject:Message-ID :References:Mime-Version:In-Reply-To:Date:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Ip7jV0n+YW9H/OzUotPu7lRJMSNUqglDsDwVkTwkers=; b=aGifPIsx+Kfbd4 IyEv7bSGwqHK1j57SGWvU/+0dWt1imBd4eF+hZWcMS1gf5KEbl4CXnDhBMJTZZh5+ZCL4+BxtxXa4 XM2TE2eECMl/mNpBAE0b1ZhqQiz4o+ilDbxHbtOwG1CJOYx160msIIMgSa1K3zQQtGzJqloQF0hRT J3+LZDuHMounJoQR8/R7YdWT3gqwdufY8jkcmdgJ/9UExJQ6TJodWe7ahKD9mIAlixUl2+W7LWBdE 6fpeLf+vlFonIampyJIuc3eTdAGf+LxYW1m5hO0ABNQL00Lsy1huUTNuA7veKJXvqYkfOx6FWoimC GIcGoEQy46g2FBJXG93w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkvUW-0000000GAqs-190p; Fri, 15 Mar 2024 00:32:08 +0000 Received: from mail-pf1-x449.google.com ([2607:f8b0:4864:20::449]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkuTW-0000000G05y-2HB2 for linux-arm-kernel@lists.infradead.org; Thu, 14 Mar 2024 23:27:09 +0000 Received: by mail-pf1-x449.google.com with SMTP id d2e1a72fcca58-6e6f0f0cde9so759003b3a.1 for ; Thu, 14 Mar 2024 16:26:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1710458818; x=1711063618; darn=lists.infradead.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=TsmKqFE/J9A83H6EDT6TRyEjuTaABK26VwJK7nrcBoU=; b=aElTtybCzflvyLiS6VtUewN+loKiOH+h8YhcwaoRxOoJNuKdtzoc5vSga3KszdD+UX PGjBRQzne/1CY1zwS6kJWGTYK5KjKujzrGSHuebHvQJvNBUN2Zxb7LT3xHTcAG8xPzPT O+sSO3BvsjV+QP0mVCwkCuCqeBa1I74pUQgFkh2r7MXSMR/ZE1ZJRoOhapsPPRGMfHIg 8TquspiZhcyFQhph39TDl6+W1C0XlDYOki96czVrKJyK0dWAfhxub6pLvkziSqNE3h3s Xm/zvcL5bA88qnOJT8i0z0RKbDZyOmXwmj4tk8xgOJBxd3NHcLcSdSt1sEL2J3HmA9NM 9zPw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710458818; x=1711063618; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=TsmKqFE/J9A83H6EDT6TRyEjuTaABK26VwJK7nrcBoU=; b=cJt6dBx87CB5gfbjmeMnKDK4nldqoSGYtDQgucgYUzKDYnCA8VtjrvVyW/m8MEFmK3 h09i1k6L6AWF2NmD7+q69mLIhuai1Y0Rd7cONjynJrBDC5CsxfR5THOa+2ECLCxekSTS m8NKl5kkYtyAN6Xidqs//KjITdi+q2kvpw3aq5IvGuZc6Gh4GI0XAnuLkPDgd55K5XtF iayUKn68SUZDL9GbhHvsPsU48WJbOE7YcPWabpT+Hsqt1Lq6pWLOmFxG9xZwc3LboImz BUa7akKSTUdVzqGKhs8CS4qBEHJkQDZD0V9XOnoFkMoatdhAhYboKe8012gVxCqicycc wdCQ== X-Gm-Message-State: AOJu0YxfDOgmGw2OecOYQISlbtGKT8aTOSipzuuPNYimQX5CAZbrzmZL /PsWthNvt5NHGepdG50etqJVpeWPE0xHsVPVwbwr1rrlFLTtN2E3jXiP/W+1H/O2egtT87iG/eo JpQ== X-Google-Smtp-Source: AGHT+IFBRAp98Kaf3TiIsE4r32WtqT4agCopo0pqGopBcEZjWK/47YBG2CyXVRuM53LhPgF6dYrq8Z3S4cU= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a05:6a00:9298:b0:6e6:89b6:70e8 with SMTP id jw24-20020a056a00929800b006e689b670e8mr143843pfb.3.1710458818396; Thu, 14 Mar 2024 16:26:58 -0700 (PDT) Date: Thu, 14 Mar 2024 16:26:29 -0700 In-Reply-To: <20240314232637.2538648-1-seanjc@google.com> Mime-Version: 1.0 References: <20240314232637.2538648-1-seanjc@google.com> X-Mailer: git-send-email 2.44.0.291.gc1ea87d7ee-goog Message-ID: <20240314232637.2538648-11-seanjc@google.com> Subject: [PATCH 10/18] KVM: selftests: Init IDT and exception handlers for all VMs/vCPUs on x86 From: Sean Christopherson To: Marc Zyngier , Oliver Upton , Paolo Bonzini , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Sean Christopherson , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Ackerley Tng X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240314_162702_845380_E977ADF1 X-CRM114-Status: GOOD ( 14.91 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Sean Christopherson Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Initialize the IDT and exception handlers for all non-barebones VMs and vCPUs on x86. Forcing tests to manually configure the IDT just to save 8KiB of memory is a terrible tradeoff, and also leads to weird tests (multiple tests have deliberately relied on shutdown to indicate success), and hard-to-debug failures, e.g. instead of a precise unexpected exception failure, tests see only shutdown. Signed-off-by: Sean Christopherson Reviewed-by: Ackerley Tng --- tools/testing/selftests/kvm/include/x86_64/processor.h | 2 -- tools/testing/selftests/kvm/lib/x86_64/processor.c | 8 ++++++-- tools/testing/selftests/kvm/x86_64/amx_test.c | 2 -- tools/testing/selftests/kvm/x86_64/fix_hypercall_test.c | 2 -- tools/testing/selftests/kvm/x86_64/hyperv_evmcs.c | 2 -- tools/testing/selftests/kvm/x86_64/hyperv_features.c | 6 ------ tools/testing/selftests/kvm/x86_64/hyperv_ipi.c | 3 --- tools/testing/selftests/kvm/x86_64/kvm_pv_test.c | 3 --- tools/testing/selftests/kvm/x86_64/monitor_mwait_test.c | 3 --- tools/testing/selftests/kvm/x86_64/platform_info_test.c | 3 --- tools/testing/selftests/kvm/x86_64/pmu_counters_test.c | 3 --- .../testing/selftests/kvm/x86_64/pmu_event_filter_test.c | 6 ------ .../kvm/x86_64/smaller_maxphyaddr_emulation_test.c | 3 --- tools/testing/selftests/kvm/x86_64/svm_int_ctl_test.c | 3 --- .../selftests/kvm/x86_64/svm_nested_shutdown_test.c | 3 --- .../selftests/kvm/x86_64/svm_nested_soft_inject_test.c | 3 --- tools/testing/selftests/kvm/x86_64/ucna_injection_test.c | 4 ---- .../selftests/kvm/x86_64/userspace_msr_exit_test.c | 3 --- .../kvm/x86_64/vmx_exception_with_invalid_guest_state.c | 3 --- tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c | 3 --- tools/testing/selftests/kvm/x86_64/xapic_ipi_test.c | 2 -- tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c | 3 --- tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c | 2 -- 23 files changed, 6 insertions(+), 69 deletions(-) diff --git a/tools/testing/selftests/kvm/include/x86_64/processor.h b/tools/testing/selftests/kvm/include/x86_64/processor.h index d6ffe03c9d0b..4804abe00158 100644 --- a/tools/testing/selftests/kvm/include/x86_64/processor.h +++ b/tools/testing/selftests/kvm/include/x86_64/processor.h @@ -1129,8 +1129,6 @@ struct idt_entry { uint32_t offset2; uint32_t reserved; }; -void vm_init_descriptor_tables(struct kvm_vm *vm); -void vcpu_init_descriptor_tables(struct kvm_vcpu *vcpu); void vm_install_exception_handler(struct kvm_vm *vm, int vector, void (*handler)(struct ex_regs *)); diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c index d6bfe96a6a77..5813d93b2e7c 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/processor.c +++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c @@ -540,7 +540,7 @@ static void kvm_setup_tss_64bit(struct kvm_vm *vm, struct kvm_segment *segp, kvm_seg_fill_gdt_64bit(vm, segp); } -void vcpu_init_descriptor_tables(struct kvm_vcpu *vcpu) +static void vcpu_init_descriptor_tables(struct kvm_vcpu *vcpu) { struct kvm_vm *vm = vcpu->vm; struct kvm_sregs sregs; @@ -585,6 +585,8 @@ static void vcpu_init_sregs(struct kvm_vm *vm, struct kvm_vcpu *vcpu) sregs.cr3 = vm->pgd; vcpu_sregs_set(vcpu, &sregs); + + vcpu_init_descriptor_tables(vcpu); } static void set_idt_entry(struct kvm_vm *vm, int vector, unsigned long addr, @@ -638,7 +640,7 @@ void route_exception(struct ex_regs *regs) regs->vector, regs->rip); } -void vm_init_descriptor_tables(struct kvm_vm *vm) +static void vm_init_descriptor_tables(struct kvm_vm *vm) { extern void *idt_handlers; int i; @@ -670,6 +672,8 @@ void assert_on_unhandled_exception(struct kvm_vcpu *vcpu) void kvm_arch_vm_post_create(struct kvm_vm *vm) { vm_create_irqchip(vm); + vm_init_descriptor_tables(vm); + sync_global_to_guest(vm, host_cpu_is_intel); sync_global_to_guest(vm, host_cpu_is_amd); diff --git a/tools/testing/selftests/kvm/x86_64/amx_test.c b/tools/testing/selftests/kvm/x86_64/amx_test.c index eae521f050e0..ab6c31aee447 100644 --- a/tools/testing/selftests/kvm/x86_64/amx_test.c +++ b/tools/testing/selftests/kvm/x86_64/amx_test.c @@ -246,8 +246,6 @@ int main(int argc, char *argv[]) vcpu_regs_get(vcpu, ®s1); /* Register #NM handler */ - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); vm_install_exception_handler(vm, NM_VECTOR, guest_nm_handler); /* amx cfg for guest_code */ diff --git a/tools/testing/selftests/kvm/x86_64/fix_hypercall_test.c b/tools/testing/selftests/kvm/x86_64/fix_hypercall_test.c index f3c2239228b1..762628f7d4ba 100644 --- a/tools/testing/selftests/kvm/x86_64/fix_hypercall_test.c +++ b/tools/testing/selftests/kvm/x86_64/fix_hypercall_test.c @@ -110,8 +110,6 @@ static void test_fix_hypercall(struct kvm_vcpu *vcpu, bool disable_quirk) { struct kvm_vm *vm = vcpu->vm; - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); vm_install_exception_handler(vcpu->vm, UD_VECTOR, guest_ud_handler); if (disable_quirk) diff --git a/tools/testing/selftests/kvm/x86_64/hyperv_evmcs.c b/tools/testing/selftests/kvm/x86_64/hyperv_evmcs.c index 4c7257ecd2a6..4238691a755c 100644 --- a/tools/testing/selftests/kvm/x86_64/hyperv_evmcs.c +++ b/tools/testing/selftests/kvm/x86_64/hyperv_evmcs.c @@ -258,8 +258,6 @@ int main(int argc, char *argv[]) vcpu_args_set(vcpu, 3, vmx_pages_gva, hv_pages_gva, addr_gva2gpa(vm, hcall_page)); vcpu_set_msr(vcpu, HV_X64_MSR_VP_INDEX, vcpu->id); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); vm_install_exception_handler(vm, UD_VECTOR, guest_ud_handler); vm_install_exception_handler(vm, NMI_VECTOR, guest_nmi_handler); diff --git a/tools/testing/selftests/kvm/x86_64/hyperv_features.c b/tools/testing/selftests/kvm/x86_64/hyperv_features.c index b923a285e96f..068e9c69710d 100644 --- a/tools/testing/selftests/kvm/x86_64/hyperv_features.c +++ b/tools/testing/selftests/kvm/x86_64/hyperv_features.c @@ -156,9 +156,6 @@ static void guest_test_msrs_access(void) vcpu_init_cpuid(vcpu, prev_cpuid); } - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); - /* TODO: Make this entire test easier to maintain. */ if (stage >= 21) vcpu_enable_cap(vcpu, KVM_CAP_HYPERV_SYNIC2, 0); @@ -532,9 +529,6 @@ static void guest_test_hcalls_access(void) while (true) { vm = vm_create_with_one_vcpu(&vcpu, guest_hcall); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); - /* Hypercall input/output */ hcall_page = vm_vaddr_alloc_pages(vm, 2); memset(addr_gva2hva(vm, hcall_page), 0x0, 2 * getpagesize()); diff --git a/tools/testing/selftests/kvm/x86_64/hyperv_ipi.c b/tools/testing/selftests/kvm/x86_64/hyperv_ipi.c index f1617762c22f..c6a03141cdaa 100644 --- a/tools/testing/selftests/kvm/x86_64/hyperv_ipi.c +++ b/tools/testing/selftests/kvm/x86_64/hyperv_ipi.c @@ -256,16 +256,13 @@ int main(int argc, char *argv[]) hcall_page = vm_vaddr_alloc_pages(vm, 2); memset(addr_gva2hva(vm, hcall_page), 0x0, 2 * getpagesize()); - vm_init_descriptor_tables(vm); vcpu[1] = vm_vcpu_add(vm, RECEIVER_VCPU_ID_1, receiver_code); - vcpu_init_descriptor_tables(vcpu[1]); vcpu_args_set(vcpu[1], 2, hcall_page, addr_gva2gpa(vm, hcall_page)); vcpu_set_msr(vcpu[1], HV_X64_MSR_VP_INDEX, RECEIVER_VCPU_ID_1); vcpu_set_hv_cpuid(vcpu[1]); vcpu[2] = vm_vcpu_add(vm, RECEIVER_VCPU_ID_2, receiver_code); - vcpu_init_descriptor_tables(vcpu[2]); vcpu_args_set(vcpu[2], 2, hcall_page, addr_gva2gpa(vm, hcall_page)); vcpu_set_msr(vcpu[2], HV_X64_MSR_VP_INDEX, RECEIVER_VCPU_ID_2); vcpu_set_hv_cpuid(vcpu[2]); diff --git a/tools/testing/selftests/kvm/x86_64/kvm_pv_test.c b/tools/testing/selftests/kvm/x86_64/kvm_pv_test.c index 9e2879af7c20..cef0bd80038b 100644 --- a/tools/testing/selftests/kvm/x86_64/kvm_pv_test.c +++ b/tools/testing/selftests/kvm/x86_64/kvm_pv_test.c @@ -146,9 +146,6 @@ int main(void) vcpu_clear_cpuid_entry(vcpu, KVM_CPUID_FEATURES); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); - enter_guest(vcpu); kvm_vm_free(vm); } diff --git a/tools/testing/selftests/kvm/x86_64/monitor_mwait_test.c b/tools/testing/selftests/kvm/x86_64/monitor_mwait_test.c index 853802641e1e..9c8445379d76 100644 --- a/tools/testing/selftests/kvm/x86_64/monitor_mwait_test.c +++ b/tools/testing/selftests/kvm/x86_64/monitor_mwait_test.c @@ -80,9 +80,6 @@ int main(int argc, char *argv[]) vm = vm_create_with_one_vcpu(&vcpu, guest_code); vcpu_clear_cpuid_feature(vcpu, X86_FEATURE_MWAIT); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); - while (1) { vcpu_run(vcpu); TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_IO); diff --git a/tools/testing/selftests/kvm/x86_64/platform_info_test.c b/tools/testing/selftests/kvm/x86_64/platform_info_test.c index 6300bb70f028..9cf2b9fbf459 100644 --- a/tools/testing/selftests/kvm/x86_64/platform_info_test.c +++ b/tools/testing/selftests/kvm/x86_64/platform_info_test.c @@ -51,9 +51,6 @@ int main(int argc, char *argv[]) vm = vm_create_with_one_vcpu(&vcpu, guest_code); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); - msr_platform_info = vcpu_get_msr(vcpu, MSR_PLATFORM_INFO); vcpu_set_msr(vcpu, MSR_PLATFORM_INFO, msr_platform_info | MSR_PLATFORM_INFO_MAX_TURBO_RATIO); diff --git a/tools/testing/selftests/kvm/x86_64/pmu_counters_test.c b/tools/testing/selftests/kvm/x86_64/pmu_counters_test.c index 29609b52f8fa..ff6d21d148de 100644 --- a/tools/testing/selftests/kvm/x86_64/pmu_counters_test.c +++ b/tools/testing/selftests/kvm/x86_64/pmu_counters_test.c @@ -31,9 +31,6 @@ static struct kvm_vm *pmu_vm_create_with_one_vcpu(struct kvm_vcpu **vcpu, struct kvm_vm *vm; vm = vm_create_with_one_vcpu(vcpu, guest_code); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(*vcpu); - sync_global_to_guest(vm, kvm_pmu_version); sync_global_to_guest(vm, is_forced_emulation_enabled); diff --git a/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c b/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c index 3c85d1ae9893..5cbe9d331acb 100644 --- a/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c +++ b/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c @@ -337,9 +337,6 @@ static void test_pmu_config_disable(void (*guest_code)(void)) vm_enable_cap(vm, KVM_CAP_PMU_CAPABILITY, KVM_PMU_CAP_DISABLE); vcpu = vm_vcpu_add(vm, 0, guest_code); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); - TEST_ASSERT(!sanity_check_pmu(vcpu), "Guest should not be able to use disabled PMU."); @@ -876,9 +873,6 @@ int main(int argc, char *argv[]) vm = vm_create_with_one_vcpu(&vcpu, guest_code); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); - TEST_REQUIRE(sanity_check_pmu(vcpu)); if (use_amd_pmu()) diff --git a/tools/testing/selftests/kvm/x86_64/smaller_maxphyaddr_emulation_test.c b/tools/testing/selftests/kvm/x86_64/smaller_maxphyaddr_emulation_test.c index 416207c38a17..0d682d6b76f1 100644 --- a/tools/testing/selftests/kvm/x86_64/smaller_maxphyaddr_emulation_test.c +++ b/tools/testing/selftests/kvm/x86_64/smaller_maxphyaddr_emulation_test.c @@ -60,9 +60,6 @@ int main(int argc, char *argv[]) vm = vm_create_with_one_vcpu(&vcpu, guest_code); vcpu_args_set(vcpu, 1, kvm_is_tdp_enabled()); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); - vcpu_set_cpuid_property(vcpu, X86_PROPERTY_MAX_PHY_ADDR, MAXPHYADDR); rc = kvm_check_cap(KVM_CAP_EXIT_ON_EMULATION_FAILURE); diff --git a/tools/testing/selftests/kvm/x86_64/svm_int_ctl_test.c b/tools/testing/selftests/kvm/x86_64/svm_int_ctl_test.c index 32bef39bec21..916e04248fbb 100644 --- a/tools/testing/selftests/kvm/x86_64/svm_int_ctl_test.c +++ b/tools/testing/selftests/kvm/x86_64/svm_int_ctl_test.c @@ -93,9 +93,6 @@ int main(int argc, char *argv[]) vm = vm_create_with_one_vcpu(&vcpu, l1_guest_code); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); - vm_install_exception_handler(vm, VINTR_IRQ_NUMBER, vintr_irq_handler); vm_install_exception_handler(vm, INTR_IRQ_NUMBER, intr_irq_handler); diff --git a/tools/testing/selftests/kvm/x86_64/svm_nested_shutdown_test.c b/tools/testing/selftests/kvm/x86_64/svm_nested_shutdown_test.c index f4a1137e04ab..00135cbba35e 100644 --- a/tools/testing/selftests/kvm/x86_64/svm_nested_shutdown_test.c +++ b/tools/testing/selftests/kvm/x86_64/svm_nested_shutdown_test.c @@ -48,9 +48,6 @@ int main(int argc, char *argv[]) TEST_REQUIRE(kvm_cpu_has(X86_FEATURE_SVM)); vm = vm_create_with_one_vcpu(&vcpu, l1_guest_code); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); - vcpu_alloc_svm(vm, &svm_gva); vcpu_args_set(vcpu, 2, svm_gva, vm->arch.idt); diff --git a/tools/testing/selftests/kvm/x86_64/svm_nested_soft_inject_test.c b/tools/testing/selftests/kvm/x86_64/svm_nested_soft_inject_test.c index 2478a9e50743..7b6481d6c0d3 100644 --- a/tools/testing/selftests/kvm/x86_64/svm_nested_soft_inject_test.c +++ b/tools/testing/selftests/kvm/x86_64/svm_nested_soft_inject_test.c @@ -152,9 +152,6 @@ static void run_test(bool is_nmi) vm = vm_create_with_one_vcpu(&vcpu, l1_guest_code); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); - vm_install_exception_handler(vm, NMI_VECTOR, guest_nmi_handler); vm_install_exception_handler(vm, BP_VECTOR, guest_bp_handler); vm_install_exception_handler(vm, INT_NR, guest_int_handler); diff --git a/tools/testing/selftests/kvm/x86_64/ucna_injection_test.c b/tools/testing/selftests/kvm/x86_64/ucna_injection_test.c index bc9be20f9600..6eeb5dd1e65c 100644 --- a/tools/testing/selftests/kvm/x86_64/ucna_injection_test.c +++ b/tools/testing/selftests/kvm/x86_64/ucna_injection_test.c @@ -284,10 +284,6 @@ int main(int argc, char *argv[]) cmcidis_vcpu = create_vcpu_with_mce_cap(vm, 1, false, cmci_disabled_guest_code); cmci_vcpu = create_vcpu_with_mce_cap(vm, 2, true, cmci_enabled_guest_code); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(ucna_vcpu); - vcpu_init_descriptor_tables(cmcidis_vcpu); - vcpu_init_descriptor_tables(cmci_vcpu); vm_install_exception_handler(vm, CMCI_VECTOR, guest_cmci_handler); vm_install_exception_handler(vm, GP_VECTOR, guest_gp_handler); diff --git a/tools/testing/selftests/kvm/x86_64/userspace_msr_exit_test.c b/tools/testing/selftests/kvm/x86_64/userspace_msr_exit_test.c index f4f61a2d2464..fffda40e286f 100644 --- a/tools/testing/selftests/kvm/x86_64/userspace_msr_exit_test.c +++ b/tools/testing/selftests/kvm/x86_64/userspace_msr_exit_test.c @@ -531,9 +531,6 @@ KVM_ONE_VCPU_TEST(user_msr, msr_filter_allow, guest_code_filter_allow) vm_ioctl(vm, KVM_X86_SET_MSR_FILTER, &filter_allow); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); - vm_install_exception_handler(vm, GP_VECTOR, guest_gp_handler); /* Process guest code userspace exits. */ diff --git a/tools/testing/selftests/kvm/x86_64/vmx_exception_with_invalid_guest_state.c b/tools/testing/selftests/kvm/x86_64/vmx_exception_with_invalid_guest_state.c index fad3634fd9eb..3fd6eceab46f 100644 --- a/tools/testing/selftests/kvm/x86_64/vmx_exception_with_invalid_guest_state.c +++ b/tools/testing/selftests/kvm/x86_64/vmx_exception_with_invalid_guest_state.c @@ -115,9 +115,6 @@ int main(int argc, char *argv[]) vm = vm_create_with_one_vcpu(&vcpu, guest_code); get_set_sigalrm_vcpu(vcpu); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); - vm_install_exception_handler(vm, UD_VECTOR, guest_ud_handler); /* diff --git a/tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c b/tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c index ea0cb3cae0f7..1b6e20e3a56d 100644 --- a/tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c +++ b/tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c @@ -86,9 +86,6 @@ KVM_ONE_VCPU_TEST(vmx_pmu_caps, guest_wrmsr_perf_capabilities, guest_code) struct ucall uc; int r, i; - vm_init_descriptor_tables(vcpu->vm); - vcpu_init_descriptor_tables(vcpu); - vcpu_set_msr(vcpu, MSR_IA32_PERF_CAPABILITIES, host_cap.capabilities); vcpu_args_set(vcpu, 1, host_cap.capabilities); diff --git a/tools/testing/selftests/kvm/x86_64/xapic_ipi_test.c b/tools/testing/selftests/kvm/x86_64/xapic_ipi_test.c index 725c206ba0b9..f51084061134 100644 --- a/tools/testing/selftests/kvm/x86_64/xapic_ipi_test.c +++ b/tools/testing/selftests/kvm/x86_64/xapic_ipi_test.c @@ -410,8 +410,6 @@ int main(int argc, char *argv[]) vm = vm_create_with_one_vcpu(¶ms[0].vcpu, halter_guest_code); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(params[0].vcpu); vm_install_exception_handler(vm, IPI_VECTOR, guest_ipi_handler); virt_pg_map(vm, APIC_DEFAULT_GPA, APIC_DEFAULT_GPA); diff --git a/tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c b/tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c index 25a0b0db5c3c..95ce192d0753 100644 --- a/tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c +++ b/tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c @@ -109,9 +109,6 @@ int main(int argc, char *argv[]) vm = vm_create_with_one_vcpu(&vcpu, guest_code); run = vcpu->run; - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); - while (1) { vcpu_run(vcpu); diff --git a/tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c b/tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c index d2ea0435f4f7..a7236f17dfd0 100644 --- a/tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c +++ b/tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c @@ -553,8 +553,6 @@ int main(int argc, char *argv[]) }; vm_ioctl(vm, KVM_XEN_HVM_SET_ATTR, &vec); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); vm_install_exception_handler(vm, EVTCHN_VECTOR, evtchn_handler); if (do_runstate_tests) { From patchwork Thu Mar 14 23:26:30 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Christopherson X-Patchwork-Id: 13592943 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6CE2AC54E69 for ; Fri, 15 Mar 2024 00:32:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:Reply-To:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:From:Subject:Message-ID :References:Mime-Version:In-Reply-To:Date:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=7eMDQSKOz1GtywSe6hvFvTx00+XswM1o/BrCUD+IcAw=; b=Bfnz/gigO3Vdrx O5I6/nqVFDrcvI/OF3lZMZgye7eRoTzEri7v42q5+Zz4T1nOZCScyiMuXlb4jj8co+P+ruKXnNCkq RZTtqDjYkxUxEUmMwg8yOc2cwpcF4heI5UBqpb4YUmC4xd8drfaX8jJXY8lYcSc56Y34/UBGCFf5d h2lbxJDPAs8Wv1oS9lhT+D4Nq5ZSrjmOvI9tlYX86z1zq5x13RdYhlZBoDa6TKf7OdI4PPlUNctXH 52yT9hBaf4FIUXOeZ2y579tgEyq/60F4r4EDJt/wFoHvyt9VlJnJXafJDOgcLGGwSbyphcnZgpbcH btcc8rpIrzJG1qs4kjvA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkvUS-0000000GAoS-3awY; Fri, 15 Mar 2024 00:32:04 +0000 Received: from mail-yb1-xb49.google.com ([2607:f8b0:4864:20::b49]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkuTY-0000000G06t-1vQm for linux-arm-kernel@lists.infradead.org; Thu, 14 Mar 2024 23:27:09 +0000 Received: by mail-yb1-xb49.google.com with SMTP id 3f1490d57ef6-dced704f17cso2438437276.1 for ; Thu, 14 Mar 2024 16:27:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1710458820; x=1711063620; darn=lists.infradead.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=j/j/mb3JtyoyPDhLhkSAITq95aQFSMlle8Dlg66amAk=; b=z+NwZM8rEaod+rOFkd4il6htFvTamKopwVg2NVZWxF/tpYh4hhfPtW+82qgct8iSz2 y56BtS2yG8AuUkKKKD1qU/L7rNfoLC3ydjjpT1iSLIDZ8cCh23xIZXxOSbIEsQx48mBp D67l2vlkR2u0mGw2Wf3kCvcOX31o6cUJmmuFlDFjCmTqa7257HO0+fQa5PfZ/Cu5Vj0Z uQVeTaMoVwT3d6LMzpvSCfjvomQuUwhNraBq45kbAwzf3H1oueOTLru6aR0LDOMXgniE Y8MOAFpQCvg19lAdWXZUeKiOTtKrZ+WramgCyV+M/tNVmrLkndpq5bN8Y/2P0bybQGAq ZdeQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710458820; x=1711063620; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=j/j/mb3JtyoyPDhLhkSAITq95aQFSMlle8Dlg66amAk=; b=eCB18iyIJreF4L79c+jdWocNl/7fDfhdJ2NEyeQZGgBEpmZ4kd3C4PXC+vstPFCm2i a9alKQDXcRKGiONzYvwJsjILN9bpyZw4wypv4zWY71KNsTwCN9fw6wyTxz34OjIZGbHO k3K4VJvISIvHmLnaRVHKfDeAJJcq/vAmHgOxITmkVkGkgIl9oNnLnu8BWOtgRDQKltAf VcoqylNIcjg6BlR8KUiaZ4ni4m+NXHzIhgqmmBvhNYt/IGgkVZ72jpd5ueIf5m5auf/v PzstXspK6mln4pTE/ti9d1ei4Xsu3jNg3O4wHLFglR5EH7Dg7zdYL3wjgs4ckqePdwSk cbtg== X-Gm-Message-State: AOJu0Yw5W0eRJDefB5yFp3QNeCZGiCTdFhze7mnQEWJZsCrvAyf0bv74 JO8WhS3HahMrzHJng7y4pNeFTDnRGoGXbBLeRXSIPO1ElrdFTVxbsD9EOFDWUo7s8o7XkCUdC17 n2g== X-Google-Smtp-Source: AGHT+IEgFldUzAavXJ42YJM5+Q6BHlgBbuisK5vIFOhA5ma+0WFPVDRLg0oxmN/Zi21+BucUmJd5KHT651s= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a05:6902:72e:b0:dcc:94b7:a7a3 with SMTP id l14-20020a056902072e00b00dcc94b7a7a3mr183110ybt.12.1710458820208; Thu, 14 Mar 2024 16:27:00 -0700 (PDT) Date: Thu, 14 Mar 2024 16:26:30 -0700 In-Reply-To: <20240314232637.2538648-1-seanjc@google.com> Mime-Version: 1.0 References: <20240314232637.2538648-1-seanjc@google.com> X-Mailer: git-send-email 2.44.0.291.gc1ea87d7ee-goog Message-ID: <20240314232637.2538648-12-seanjc@google.com> Subject: [PATCH 11/18] KVM: selftests: Map x86's exception_handlers at VM creation, not vCPU setup From: Sean Christopherson To: Marc Zyngier , Oliver Upton , Paolo Bonzini , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Sean Christopherson , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Ackerley Tng X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240314_162704_666115_F57B69AD X-CRM114-Status: GOOD ( 10.59 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Sean Christopherson Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Map x86's exception handlers at VM creation, not vCPU setup, as the mapping is per-VM, i.e. doesn't need to be (re)done for every vCPU. Signed-off-by: Sean Christopherson Reviewed-by: Ackerley Tng --- tools/testing/selftests/kvm/lib/x86_64/processor.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c index 5813d93b2e7c..f4046029f168 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/processor.c +++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c @@ -552,7 +552,6 @@ static void vcpu_init_descriptor_tables(struct kvm_vcpu *vcpu) sregs.gdt.limit = getpagesize() - 1; kvm_seg_set_kernel_data_64bit(NULL, DEFAULT_DATA_SELECTOR, &sregs.gs); vcpu_sregs_set(vcpu, &sregs); - *(vm_vaddr_t *)addr_gva2hva(vm, (vm_vaddr_t)(&exception_handlers)) = vm->handlers; } static void vcpu_init_sregs(struct kvm_vm *vm, struct kvm_vcpu *vcpu) @@ -651,6 +650,8 @@ static void vm_init_descriptor_tables(struct kvm_vm *vm) for (i = 0; i < NUM_INTERRUPTS; i++) set_idt_entry(vm, i, (unsigned long)(&idt_handlers)[i], 0, DEFAULT_CODE_SELECTOR); + + *(vm_vaddr_t *)addr_gva2hva(vm, (vm_vaddr_t)(&exception_handlers)) = vm->handlers; } void vm_install_exception_handler(struct kvm_vm *vm, int vector, From patchwork Thu Mar 14 23:26:31 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Christopherson X-Patchwork-Id: 13592950 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 95A19C54E6E for ; Fri, 15 Mar 2024 00:32:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:Reply-To:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:From:Subject:Message-ID :References:Mime-Version:In-Reply-To:Date:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=KbhXuYBVsvj0u09KsAzUqBZeT2BtMu1GYtZGP8N11TY=; b=K7m4ShPMRXg57a tablMcPR5U8WAGZK75ftM9Fjf2v18YV6qjRLosCsbn6ItNio0tUUh8XlHV4TFHeio+HvYlrVJxioo MAklQ10taAxUW6OPEw2eNys/votZ0UpFeSBD5c2q/cUw7OcEQ99Q7i6mNJRiJRtAetmRScE3xKYa+ iMy6BBbW11F6SqtxqDgPN222PRz6RT+LVYiCRbEI+qobdW9aL+ICESweJx8gOOci2JX1vE6WKNP28 E00AOMchP1D2jsnyE5waD0p2JTmjGgJ23y/3nNJG24znvBKNrEYy6iEkIwhn7YMjNSDOoh+spaN0+ BcbEKQ6569R3JBnkC34w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkvUn-0000000GB5H-0Yt9; Fri, 15 Mar 2024 00:32:25 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkuTk-0000000G0Iu-0rLc for linux-arm-kernel@bombadil.infradead.org; Thu, 14 Mar 2024 23:27:16 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Type:Cc:To:From:Subject: Message-ID:References:Mime-Version:In-Reply-To:Date:Reply-To:Sender: Content-Transfer-Encoding:Content-ID:Content-Description; bh=uvANWFYN1jpIYLHOo6AYUHWQUhBZT4UdCnC51A9DHBc=; b=KFyoh/YuOOnEF4KDoTCh+Xrch0 hTwn6QT6Jm0tAvMUCYiFeLiV3XcUC9p83QbTkoRRpIlBLLw8xHlN2+dr1NDDpgZTaDPYl1Ow6b8pX TMv7jhz0YSWS8gS/MP0xFM9DGm2F2x4a4wYjJvLYqWAb8RpeyijN/q5RUCrQy0bvB6QQCAMoit02z Is/Tt89D2ZLCgO1NRTGOfooZl6zRaHbPCtmqzph5RlZ7Q2YoiBrdrg2GaVWXKwNPqUZXQdJ9AhP8+ 2g2hClnDj9cgbK6TSPqSkrnwiv43C582j9eB2tVcRqj7Ucm9plgJR1GwTiX3VBCG7iwxV9ISlcIhq U/avGNIA==; Received: from mail-pj1-x1049.google.com ([2607:f8b0:4864:20::1049]) by desiato.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkuTa-0000000Aiuk-0Yqp for linux-arm-kernel@lists.infradead.org; Thu, 14 Mar 2024 23:27:13 +0000 Received: by mail-pj1-x1049.google.com with SMTP id 98e67ed59e1d1-29c751d57ddso1227424a91.1 for ; Thu, 14 Mar 2024 16:27:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1710458822; x=1711063622; darn=lists.infradead.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=uvANWFYN1jpIYLHOo6AYUHWQUhBZT4UdCnC51A9DHBc=; b=HbDbMEtd4JjkIfVz8GzTm+SJJ2wVvRtJZE2H3eh4lWO641P0jzCSPVMkndDKksT6Tj 9NbNIEXKLHwlqYy6MRdUtTX/4JecBPTdD8qqHudE7j49q2G7aNhU+uhiaov7ybiD5WFu HnufadObWWKlyTvrxXoj6ocLwQYPKoVt1VtxHjrrOS3LnBUf/Ff6+GFbExEkLyzHaiZ4 W9nqHDn5ALn91xEiZPoEv4E5Iak6dxoz8wM8p7+St+/Jit73/tm2WPFoEyPiOy8qPifs w2UUU19i3OdeU+QFv22kZnbI/dHUXRTej5zgrsXmRGKuEdB7SdQ7I9iR/aqSooEcYAnR h1Lg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710458822; x=1711063622; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=uvANWFYN1jpIYLHOo6AYUHWQUhBZT4UdCnC51A9DHBc=; b=e8YF540D9kXf7Sw5XEAdgboPgppg1BJRUpNadAebmP8/hMrllovBfAgzERtaZg5LNM Dqt5MgoC/bkFn+Ky6tjLLhasrISzTkBa5tMT6NBFnojl6yoHU8OwckjccakE+wE4jdbi IOVEKHvY5xewBCx/UuoWT7+Hwwoa4Pu8nIkNUZhw4b+LwbhhAvIbFXs4dA5DLwrRUYmy xpujTJfuqGFV1EWdFjgkx1sH66fUKyZu/9GqZBWm9+RXYOxfxIx0HQafyPcHZFjCAh4o Plwkyv1Lu8iV/4E/YQxcUt24JQOmWTxd2t/zysoeYn5IQvS/o1MwAPUmy5PRaORrzsAX Yt5Q== X-Gm-Message-State: AOJu0Yxd+T2teGXeOF7ghQCiXuY5d802lO/VjDcsQ3VtKWZgsuYpM8iY spzBAotLLsP6rF/LFxjlVicXtj2mTB+1mDTjPid+aVLtui/uv6r38Dn529sbDiAamsWBSVqM+M5 mzw== X-Google-Smtp-Source: AGHT+IEmqFL1IXL1pIFLbyp7eKBr0s6FFOiXRR1g8DgzlSysrKWmAergLMAyluCim6XJlXtnyauxch/eeT4= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a17:90b:b07:b0:29c:6d5f:a6a8 with SMTP id bf7-20020a17090b0b0700b0029c6d5fa6a8mr8117pjb.0.1710458822156; Thu, 14 Mar 2024 16:27:02 -0700 (PDT) Date: Thu, 14 Mar 2024 16:26:31 -0700 In-Reply-To: <20240314232637.2538648-1-seanjc@google.com> Mime-Version: 1.0 References: <20240314232637.2538648-1-seanjc@google.com> X-Mailer: git-send-email 2.44.0.291.gc1ea87d7ee-goog Message-ID: <20240314232637.2538648-13-seanjc@google.com> Subject: [PATCH 12/18] KVM: selftests: Allocate x86's GDT during VM creation From: Sean Christopherson To: Marc Zyngier , Oliver Upton , Paolo Bonzini , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Sean Christopherson , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Ackerley Tng X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240314_232708_987373_84BCD180 X-CRM114-Status: GOOD ( 12.28 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Sean Christopherson Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Allocate the GDT during creation of non-barebones VMs instead of waiting until the first vCPU is created, as the whole point of non-barebones VMs is to be able to run vCPUs, i.e. the GDT is going to get allocated no matter what. Signed-off-by: Sean Christopherson Reviewed-by: Ackerley Tng --- tools/testing/selftests/kvm/lib/x86_64/processor.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c index f4046029f168..8547833ffa26 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/processor.c +++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c @@ -518,9 +518,6 @@ vm_paddr_t addr_arch_gva2gpa(struct kvm_vm *vm, vm_vaddr_t gva) static void kvm_setup_gdt(struct kvm_vm *vm, struct kvm_dtable *dt) { - if (!vm->arch.gdt) - vm->arch.gdt = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA); - dt->base = vm->arch.gdt; dt->limit = getpagesize() - 1; } @@ -644,6 +641,7 @@ static void vm_init_descriptor_tables(struct kvm_vm *vm) extern void *idt_handlers; int i; + vm->arch.gdt = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA); vm->arch.idt = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA); vm->handlers = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA); /* Handlers have the same address in both address spaces.*/ From patchwork Thu Mar 14 23:26:32 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Christopherson X-Patchwork-Id: 13592923 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7E4F3C54E5D for ; Thu, 14 Mar 2024 23:30:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:Reply-To:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:From:Subject:Message-ID :References:Mime-Version:In-Reply-To:Date:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=IiNSc1Qe/fjWr4btYPEd7VJMbuvuavdsnM+N9qRZQZ0=; b=jblgPzO6ONaTNX IShvMWPlHlvxvW4Sh8iGHCvHIjrTaVYzP6Wr42M6G5MiBJERK3eQyQ7LLuc+1PQTJxqVnHVuqXN6t AUfoXQSdfusbrWUWSafxmzMk0V0OGVOm3B2JwZDxeQwAbdiNrSjF8HgormHz/dGXQY7BjPuBfCSzA 0YZOzB/7B1hGPAbGA1KMhv+D13b2EWfA/2qqqEsmj2HkVIAXQtEGmGp2qk0qvrvR0IzsGBRaaJ5Y/ iYlGlsztIyaseTAdseJ00L+gaS4TccZpn2UnLkNPanLnMf7xpK3AsU8b1hlVZEI4p6fv4BJYpljMw PWhy1IgJoiCKj+m6P3GQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkuWK-0000000G23i-3RZE; Thu, 14 Mar 2024 23:29:56 +0000 Received: from mail-yb1-xb4a.google.com ([2607:f8b0:4864:20::b4a]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkuTa-0000000G09v-44rA for linux-arm-kernel@lists.infradead.org; Thu, 14 Mar 2024 23:27:11 +0000 Received: by mail-yb1-xb4a.google.com with SMTP id 3f1490d57ef6-dc6b269686aso2254489276.1 for ; Thu, 14 Mar 2024 16:27:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1710458824; x=1711063624; darn=lists.infradead.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=WoFzTDbs1SGZWiz/BWvPtXOQrZCNvORTtjaiRTPj8cA=; b=wr7IblnxycKQ4pMAR9rpvOk2SaNttMp35Fm8IME9Wo8cddKf+T523nzHGOxnajaQa+ QZls4Dtf3eDRm0RfUEcvL02WxEh02/yNvrXWlTvmyx4asVq4ZuuvrGR0zO+c3XlUj6PV RX3HZll/KtyzRgS5ja3GrJE8VijNFBZsSeihjWu37hcMDf9hcZpLDCQI6Y+eX9h7wNRb NXT6mwKsUKG9k4na7ZWahR6OfG/sLvbx3m6Yn4J/wW719hPw/+qibCEYedA7vlTO8Ccz qkXmrfHRDvN51P6deWiqK1s3eiSZYWx5UaisOqXIg/J0AGm0NuQUGOa51Q7zxRK5GhYL J1Wg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710458824; x=1711063624; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=WoFzTDbs1SGZWiz/BWvPtXOQrZCNvORTtjaiRTPj8cA=; b=bKbvS8MTP99fk3vvdZmPWz+sUj7JwADTTn0rp+Vvb/6aFodLDaKUqvCqqhJFuJtuI1 N85+O0JAO9+theoBFdd5jLTFbIJsgnne8Z/eEeDW0F0A7QrkQR21Mkd6EfBRUaRSz8OD 1bh273xegxSUYArDfje4hCdbbGnIIreAOHXHwE4ONRjbrju0iCml12stm6Ffzmire/bP OBo+VR74llZaYF4LcMTehh8FNrNvZvUB9sYfuuSRom2yr8xIAN2FrFjw5TSRQJ4v5Tqm OzdIISwxhZTlz9WFImHrgeDnnq5I2GvX1INwuUAFKAizU8qYFMciA94kr7AhNbCEay31 Q9og== X-Gm-Message-State: AOJu0YzV7TbJu3BsqhIH5C9EkWOPegULYaCHMEAGmYxds++sva17MX8L 51ww0e4s7tRddtNwtPpMzwixiwvwfaH0wG+SqRmuTvUqGfHwa7ram4NwaU49n8eT6fTo9wMKDzx rEA== X-Google-Smtp-Source: AGHT+IHcMDu3QEHM/t3996zb5RxqsBHPTHwvDMlP8Tv3VDnGeL/s0WR7fo9rdGQ7MgRJw43RolfNSTpIRT8= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a05:6902:2009:b0:dcd:c091:e86 with SMTP id dh9-20020a056902200900b00dcdc0910e86mr147737ybb.13.1710458824203; Thu, 14 Mar 2024 16:27:04 -0700 (PDT) Date: Thu, 14 Mar 2024 16:26:32 -0700 In-Reply-To: <20240314232637.2538648-1-seanjc@google.com> Mime-Version: 1.0 References: <20240314232637.2538648-1-seanjc@google.com> X-Mailer: git-send-email 2.44.0.291.gc1ea87d7ee-goog Message-ID: <20240314232637.2538648-14-seanjc@google.com> Subject: [PATCH 13/18] KVM: selftests: Drop superfluous switch() on vm->mode in vcpu_init_sregs() From: Sean Christopherson To: Marc Zyngier , Oliver Upton , Paolo Bonzini , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Sean Christopherson , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Ackerley Tng X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240314_162707_234958_C33ECCC2 X-CRM114-Status: GOOD ( 11.28 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Sean Christopherson Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Replace the switch statement on vm->mode in x86's vcpu_init_sregs()'s with a simple assert that the VM has a 48-bit virtual address space. A switch statement is both overkill and misleading, as the existing code incorrectly implies that VMs with LA57 would need different to configuration for the LDT, TSS, and flat segments. In all likelihood, the only difference that would be needed for selftests is CR4.LA57 itself. Signed-off-by: Sean Christopherson Reviewed-by: Ackerley Tng --- .../selftests/kvm/lib/x86_64/processor.c | 25 ++++++++----------- 1 file changed, 10 insertions(+), 15 deletions(-) diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c index 8547833ffa26..561c0aa93608 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/processor.c +++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c @@ -555,6 +555,8 @@ static void vcpu_init_sregs(struct kvm_vm *vm, struct kvm_vcpu *vcpu) { struct kvm_sregs sregs; + TEST_ASSERT_EQ(vm->mode, VM_MODE_PXXV48_4K); + /* Set mode specific system register values. */ vcpu_sregs_get(vcpu, &sregs); @@ -562,22 +564,15 @@ static void vcpu_init_sregs(struct kvm_vm *vm, struct kvm_vcpu *vcpu) kvm_setup_gdt(vm, &sregs.gdt); - switch (vm->mode) { - case VM_MODE_PXXV48_4K: - sregs.cr0 = X86_CR0_PE | X86_CR0_NE | X86_CR0_PG; - sregs.cr4 |= X86_CR4_PAE | X86_CR4_OSFXSR; - sregs.efer |= (EFER_LME | EFER_LMA | EFER_NX); + sregs.cr0 = X86_CR0_PE | X86_CR0_NE | X86_CR0_PG; + sregs.cr4 |= X86_CR4_PAE | X86_CR4_OSFXSR; + sregs.efer |= (EFER_LME | EFER_LMA | EFER_NX); - kvm_seg_set_unusable(&sregs.ldt); - kvm_seg_set_kernel_code_64bit(vm, DEFAULT_CODE_SELECTOR, &sregs.cs); - kvm_seg_set_kernel_data_64bit(vm, DEFAULT_DATA_SELECTOR, &sregs.ds); - kvm_seg_set_kernel_data_64bit(vm, DEFAULT_DATA_SELECTOR, &sregs.es); - kvm_setup_tss_64bit(vm, &sregs.tr, 0x18); - break; - - default: - TEST_FAIL("Unknown guest mode, mode: 0x%x", vm->mode); - } + kvm_seg_set_unusable(&sregs.ldt); + kvm_seg_set_kernel_code_64bit(vm, DEFAULT_CODE_SELECTOR, &sregs.cs); + kvm_seg_set_kernel_data_64bit(vm, DEFAULT_DATA_SELECTOR, &sregs.ds); + kvm_seg_set_kernel_data_64bit(vm, DEFAULT_DATA_SELECTOR, &sregs.es); + kvm_setup_tss_64bit(vm, &sregs.tr, 0x18); sregs.cr3 = vm->pgd; vcpu_sregs_set(vcpu, &sregs); From patchwork Thu Mar 14 23:26:33 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Christopherson X-Patchwork-Id: 13592951 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 93355C54E6A for ; Fri, 15 Mar 2024 00:32:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:Reply-To:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:From:Subject:Message-ID :References:Mime-Version:In-Reply-To:Date:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=XAr4yddQTCDQsTGnaZB/4RoFg2ICWr5pgkD3KKP9ykA=; b=oEoNSitGQWa8Nt N9qBBUx1bDYoCOZ2x6xtP8wfyNX+dNhVGDSrXm00RwcRbsAnyTbx/u8GZbSJfufbAoeY8fHTJSaOG DV078MV9H8jI2JY+WJ2GJXFhmM1ssCWXnPoDNhkLFBGYvJ2opJkuYouKvwxvyMel2Cn72S8pARSU3 nIwJzky2ClAsshKdEDWrqnkK3ckHyYSNpMCsooa5duHw8hTPMGdIBSsTwTVuL+ypP8bmCcl8M8bl7 AfdczI1JwTfL1eWqUu424AK3cCK/8RLPEIN6UmymIjCrEYH5TFAqahK65HWYraptAqaVC3k47vW6J ubLQJ1sNsxtG3bL0Cmzg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkvUa-0000000GAur-21gV; Fri, 15 Mar 2024 00:32:12 +0000 Received: from mail-yw1-x1149.google.com ([2607:f8b0:4864:20::1149]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkuTd-0000000G0BR-3wUh for linux-arm-kernel@lists.infradead.org; Thu, 14 Mar 2024 23:27:15 +0000 Received: by mail-yw1-x1149.google.com with SMTP id 00721157ae682-60ab69a9e6fso28081897b3.0 for ; Thu, 14 Mar 2024 16:27:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1710458826; x=1711063626; darn=lists.infradead.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=ugMj11YssaThk53XXo2XJuyaCSbRC3vd2rkkLMOH5EU=; b=jPSW0HpVQFuHVWYD/N7G/zyXWpFkjbR8iFtPyzx/U3KDTeIx92xnxGq1jeuCGw0rFc j0E7l4gquQnrwRF72Zzil/hrxR7scsi6w7DneNo84D18eDwM58RFbxJcore8JZZQ8+sO iWBU+TPRlbfmvY9cYeJZbZiQuQr3JXHbeD/+/10q1nMYFtIbiePpIZPDhTH0yEmqGvH2 9FSzNNDIzAAW24owdLF+NeCEL8YzkwSb4d8rbJAt1I3FQ3/loj7IKHo4byZLgrsKmX+N 3S2BJ4U9rvBKsmIbwLvB2mmpJyq3K+1C28kkZBtdZ36+xyy+3pvmJenujMWDaTAgYWpa U+vw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710458826; x=1711063626; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=ugMj11YssaThk53XXo2XJuyaCSbRC3vd2rkkLMOH5EU=; b=WjGsW7ccKJUTyxJUvzesgdXstAQVA0Ag0vtjHJ2Qxs2Fv+FUKcKmQ489wfIq/YCWY3 S9ds34DuILl338/FLlUmBxR1aTcobBiaDQBMh+lN1DspHi8vZP0bCxbM3iNy9sHlD3/i RT07qsQty0Uu6hLUtqet8P8yDAPZ7aEVCEs1ZF4B7yJlYRIlBKhZQlGSzTK+YRmX1yHl U1QqjgiukYVbpkExMuX7IWAE6QmIVtjaKnQQLTjf7Fg46BrdLXFk1iN0y1ZU9XsxYg/W 5wIjnmIfXqeltrNUKEj7eMIxlFsAeK/UUN1SvghsudhWssb9qFZrOA8sV8P8LIPmoIo6 YGFw== X-Gm-Message-State: AOJu0YywDixLvzc2YbH22mr47Q8urLBGMnct0mOztpW/NP38cWKpdQWM QYFvTDLDagQHOtXNjO7IGeYh6Ddy7nhIqZfpahMK3Gjdr6O9rG7De5rkeL4fMQWKYt13Of2P5fm 3bw== X-Google-Smtp-Source: AGHT+IE5/WiqwibvrYrQwLJotN6HL86HBYfSMTMXmq7TGIVKVjhGwMzToGYfAqrqDOL2A5xHSs/EAtgRugA= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a81:bc0a:0:b0:60a:13b8:6a5c with SMTP id a10-20020a81bc0a000000b0060a13b86a5cmr1757713ywi.0.1710458825983; Thu, 14 Mar 2024 16:27:05 -0700 (PDT) Date: Thu, 14 Mar 2024 16:26:33 -0700 In-Reply-To: <20240314232637.2538648-1-seanjc@google.com> Mime-Version: 1.0 References: <20240314232637.2538648-1-seanjc@google.com> X-Mailer: git-send-email 2.44.0.291.gc1ea87d7ee-goog Message-ID: <20240314232637.2538648-15-seanjc@google.com> Subject: [PATCH 14/18] KVM: selftests: Fold x86's descriptor tables helpers into vcpu_init_sregs() From: Sean Christopherson To: Marc Zyngier , Oliver Upton , Paolo Bonzini , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Sean Christopherson , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Ackerley Tng X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240314_162710_277883_0A7471CC X-CRM114-Status: GOOD ( 11.12 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Sean Christopherson Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Now that the per-VM, on-demand allocation logic in kvm_setup_gdt() and vcpu_init_descriptor_tables() is gone, fold them into vcpu_init_sregs(). Note, both kvm_setup_gdt() and vcpu_init_descriptor_tables() configured the GDT, which is why it looks like kvm_setup_gdt() disappears. Opportunistically delete the pointless zeroing of the IDT limit (it was being unconditionally overwritten by vcpu_init_descriptor_tables()). Signed-off-by: Sean Christopherson Reviewed-by: Ackerley Tng --- .../selftests/kvm/lib/x86_64/processor.c | 32 ++++--------------- 1 file changed, 6 insertions(+), 26 deletions(-) diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c index 561c0aa93608..5cf845975f66 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/processor.c +++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c @@ -516,12 +516,6 @@ vm_paddr_t addr_arch_gva2gpa(struct kvm_vm *vm, vm_vaddr_t gva) return vm_untag_gpa(vm, PTE_GET_PA(*pte)) | (gva & ~HUGEPAGE_MASK(level)); } -static void kvm_setup_gdt(struct kvm_vm *vm, struct kvm_dtable *dt) -{ - dt->base = vm->arch.gdt; - dt->limit = getpagesize() - 1; -} - static void kvm_setup_tss_64bit(struct kvm_vm *vm, struct kvm_segment *segp, int selector) { @@ -537,32 +531,19 @@ static void kvm_setup_tss_64bit(struct kvm_vm *vm, struct kvm_segment *segp, kvm_seg_fill_gdt_64bit(vm, segp); } -static void vcpu_init_descriptor_tables(struct kvm_vcpu *vcpu) +static void vcpu_init_sregs(struct kvm_vm *vm, struct kvm_vcpu *vcpu) { - struct kvm_vm *vm = vcpu->vm; struct kvm_sregs sregs; + TEST_ASSERT_EQ(vm->mode, VM_MODE_PXXV48_4K); + + /* Set mode specific system register values. */ vcpu_sregs_get(vcpu, &sregs); + sregs.idt.base = vm->arch.idt; sregs.idt.limit = NUM_INTERRUPTS * sizeof(struct idt_entry) - 1; sregs.gdt.base = vm->arch.gdt; sregs.gdt.limit = getpagesize() - 1; - kvm_seg_set_kernel_data_64bit(NULL, DEFAULT_DATA_SELECTOR, &sregs.gs); - vcpu_sregs_set(vcpu, &sregs); -} - -static void vcpu_init_sregs(struct kvm_vm *vm, struct kvm_vcpu *vcpu) -{ - struct kvm_sregs sregs; - - TEST_ASSERT_EQ(vm->mode, VM_MODE_PXXV48_4K); - - /* Set mode specific system register values. */ - vcpu_sregs_get(vcpu, &sregs); - - sregs.idt.limit = 0; - - kvm_setup_gdt(vm, &sregs.gdt); sregs.cr0 = X86_CR0_PE | X86_CR0_NE | X86_CR0_PG; sregs.cr4 |= X86_CR4_PAE | X86_CR4_OSFXSR; @@ -572,12 +553,11 @@ static void vcpu_init_sregs(struct kvm_vm *vm, struct kvm_vcpu *vcpu) kvm_seg_set_kernel_code_64bit(vm, DEFAULT_CODE_SELECTOR, &sregs.cs); kvm_seg_set_kernel_data_64bit(vm, DEFAULT_DATA_SELECTOR, &sregs.ds); kvm_seg_set_kernel_data_64bit(vm, DEFAULT_DATA_SELECTOR, &sregs.es); + kvm_seg_set_kernel_data_64bit(NULL, DEFAULT_DATA_SELECTOR, &sregs.gs); kvm_setup_tss_64bit(vm, &sregs.tr, 0x18); sregs.cr3 = vm->pgd; vcpu_sregs_set(vcpu, &sregs); - - vcpu_init_descriptor_tables(vcpu); } static void set_idt_entry(struct kvm_vm *vm, int vector, unsigned long addr, From patchwork Thu Mar 14 23:26:34 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Christopherson X-Patchwork-Id: 13592948 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C958DC54E60 for ; Fri, 15 Mar 2024 00:32:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:Reply-To:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:From:Subject:Message-ID :References:Mime-Version:In-Reply-To:Date:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=MKiD7vjhLiYP3k6kiYENtR9KqsRaN/xNbn5Ff3+laHE=; b=w4i56TKIAGr57q yCVv6l6100dmL/8oNeXQ+dM3imFXj7db7yz87y8EGcQUC2fc6M0cDRmmNFeaTUIqTUl/95lWs7ikh 72+9ytuQYvoQbaqB8wZG2P8dk6DcNupV1mWnnK7Ap2PP8M5rz4xn6Y2cOD/RoqVnNZy4XZ1iomEGV TuFXZ5TkWZigUFImyDGTKmyBdDQ/wzu4cCw2CUrMCZkpjxF6mQiNPH3FO9pkCi5gbBvvw1kDvjuzJ WpYiJzMsglzFP3MRk5ydYrw+wupzNpbA4F8sTDA3HM9ZVQNLbOn406PPWZg9KBNd0dSapz6+InERU eiJy7iYkyFHb/YyupuCA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkvUX-0000000GAsn-416Y; Fri, 15 Mar 2024 00:32:09 +0000 Received: from mail-yb1-xb4a.google.com ([2607:f8b0:4864:20::b4a]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkuTe-0000000G0Ci-3vWM for linux-arm-kernel@lists.infradead.org; Thu, 14 Mar 2024 23:27:15 +0000 Received: by mail-yb1-xb4a.google.com with SMTP id 3f1490d57ef6-dc6ceade361so2499649276.0 for ; Thu, 14 Mar 2024 16:27:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1710458828; x=1711063628; darn=lists.infradead.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=uF6G18lAXQi7SGjNgTcxotaL8n8pv6tjDstW0Eyh3/8=; b=jEJBKeTKAIgmH15H/lHN28fbMaiYa0bKtuYroyQX1POYA8VEH7NkmuDzuyOV4x5X+L pOxne2BJTpC5cfs9vC7MirjxxtkjUWCHp2djT6jKnyH3h4jmebV76RoIX4MsvLE/CgNJ tAZRT1nCT+EkooE6dflvTsZuX5pDSbQzw1Y0bepS/CcDiBw4RD3rCNMskpcwsTs04Wz7 wUSvxli1cXZZoYlgiVVW9IrbD2ZAm9iPo4SoMCLLUhtAbCSFcTYIVmn7q4GVQD2Qz2/k mLtp6aokdNdg2BAIl5s11uWCrtczpT51QILUHLiRu9gAW55HfY5pk8rFoX7Eo1J6swN+ mAFw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710458828; x=1711063628; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=uF6G18lAXQi7SGjNgTcxotaL8n8pv6tjDstW0Eyh3/8=; b=wA7NWqln2TfXP4UVgZJ6tcVb5+Xk/HeU2JgDJRz4JCdPWzWYrmdp/eF0lunqpa9D7F EBgIvoD7Qc8s78VFMc/w68SZ9Zbt0tTdlJJ3NA0gpfPiAn1VglWHD266CiZPPvu/1d22 HDWYjNUsvXNFyYO1mdZ0AzKoj3ZJJr3IRc/OYATWrzmKuEVa/EgXzvd40PtLohYmnuwJ NRWw9HbvZKsootEflNeLYiuCtq613LHlWtCEaAHAA1hJjlny69JgmyqB4hj/VWVfZe3R LXiPWHb/Jx60bf0Algq/rRZ4kTUICyWj3n0ioYc8a9P3SzkG5YgjqU23G/HraV53j/O5 e6eg== X-Gm-Message-State: AOJu0YxkgSjqlwIg/v6wlR7QPmfqU8b9Fa5ammWkoJ3Ojuc2P30txQgh 7a5m0QH/QWJiC7cQf3KtrV9Ij4u1AADlnSgX1QvWq0tU8r6TGxKZImz55UEFAV3TPF4qPvSrGYe ZdQ== X-Google-Smtp-Source: AGHT+IGMAa0pMvN41GmLVswUQh74G2T7pDQzvawBbi03BR+h8KyfNdFr8QIGXJ12aJ6DdfK8GuReLQ77fHo= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a05:6902:18d5:b0:dc7:68b5:4f21 with SMTP id ck21-20020a05690218d500b00dc768b54f21mr168369ybb.9.1710458827844; Thu, 14 Mar 2024 16:27:07 -0700 (PDT) Date: Thu, 14 Mar 2024 16:26:34 -0700 In-Reply-To: <20240314232637.2538648-1-seanjc@google.com> Mime-Version: 1.0 References: <20240314232637.2538648-1-seanjc@google.com> X-Mailer: git-send-email 2.44.0.291.gc1ea87d7ee-goog Message-ID: <20240314232637.2538648-16-seanjc@google.com> Subject: [PATCH 15/18] KVM: selftests: Allocate x86's TSS at VM creation From: Sean Christopherson To: Marc Zyngier , Oliver Upton , Paolo Bonzini , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Sean Christopherson , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Ackerley Tng X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240314_162711_195909_64A8D839 X-CRM114-Status: GOOD ( 11.83 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Sean Christopherson Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Allocate x86's per-VM TSS at creation of a non-barebones VM. Like the GDT, the TSS is needed to actually run vCPUs, i.e. every non-barebones VM is all but guaranteed to allocate the TSS sooner or later. Signed-off-by: Sean Christopherson Reviewed-by: Ackerley Tng --- tools/testing/selftests/kvm/lib/x86_64/processor.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c index 5cf845975f66..03b9387a1d2e 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/processor.c +++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c @@ -519,9 +519,6 @@ vm_paddr_t addr_arch_gva2gpa(struct kvm_vm *vm, vm_vaddr_t gva) static void kvm_setup_tss_64bit(struct kvm_vm *vm, struct kvm_segment *segp, int selector) { - if (!vm->arch.tss) - vm->arch.tss = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA); - memset(segp, 0, sizeof(*segp)); segp->base = vm->arch.tss; segp->limit = 0x67; @@ -619,6 +616,8 @@ static void vm_init_descriptor_tables(struct kvm_vm *vm) vm->arch.gdt = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA); vm->arch.idt = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA); vm->handlers = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA); + vm->arch.tss = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA); + /* Handlers have the same address in both address spaces.*/ for (i = 0; i < NUM_INTERRUPTS; i++) set_idt_entry(vm, i, (unsigned long)(&idt_handlers)[i], 0, From patchwork Thu Mar 14 23:26:35 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Christopherson X-Patchwork-Id: 13592989 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A8AD6C54E60 for ; Fri, 15 Mar 2024 01:47:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:Reply-To:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:From:Subject:Message-ID :References:Mime-Version:In-Reply-To:Date:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=V6liP5bhjxBTOwYXA3ePVGfDj4oMqMRj/Lz4tAnB9r0=; b=A2bAhN/wS43yMy AL0dQO6PiNkNBp6dHe+TqAxGnAwmtQI/aucgJKZtBU6HdmCN7PQ05ODRpc2yYsP/wxh7Q5q1xmBB8 qgIb3ijRgje5t380eq8cf03kNhY/GHzm1EzocKqzfDXaZ4dLU7/5ZNxg0Pj1F9ABMnumCJ3tyKtuU Dbbpd4ynhvj2nSLE1PDuRx4ZP8pqYBLfC0C+XYXavm9t7GwBDp+Vzqk2eIacWWQMHqAgMoUjTdrwr r6pxo57stJRz92CJ6rgJbMj1eZsbPy3x0na+pY/WPCDtmbhMOlPc2VdFIjHkG401FTMwGFQJleO4B LGwsF5lFMHrg7YOaUchg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkwev-0000000GLbW-2PHk; Fri, 15 Mar 2024 01:46:57 +0000 Received: from mail-pf1-x449.google.com ([2607:f8b0:4864:20::449]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkuTh-0000000G0E8-0UMR for linux-arm-kernel@lists.infradead.org; Thu, 14 Mar 2024 23:27:17 +0000 Received: by mail-pf1-x449.google.com with SMTP id d2e1a72fcca58-6e6d3768d06so1015504b3a.0 for ; Thu, 14 Mar 2024 16:27:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1710458829; x=1711063629; darn=lists.infradead.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=pXWQ17U6pSp+5gsIGCX5tAdB4RHln2KoUo+gy6g2jBc=; b=SiHGimg8I2RRaakVy1rBBIz4adwC+pbgNiHF9QQQwCtg8SfPYDdfHi+eD0BByuHC9C +duy2YGh77ppdc2SXxMIGg4G5xYhmx8N79n3ewm/yGG1iwVvKnSDcMkJK1d5hyfkab53 NNwm1gjEFOKEYEXbLxz5ftD+/bdI5vJmdkXku00JJKDjUgUlWulI7r/Gvh8yLPyLixwW EGZ0KoI6rQ5I7++iOxbpZP7ZVjB8fq0sX7u/SIOe3IJWBSsSc0YkAUe/osFUTuvybdCl PUnBCac4wNCJepsnXAEG/V58sn7mZBQi0OnWNztOaJ0naqYJHSj30X2IEeqO492wffah QN6Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710458829; x=1711063629; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=pXWQ17U6pSp+5gsIGCX5tAdB4RHln2KoUo+gy6g2jBc=; b=MelZyln2ma87DEP4XPpWgjfLwn/DUhDOn8Tdt/8P0EXNNklNYchuY2DhLMEHnJN9z+ +P9v0ttuGu5seL2HLfAkbB9YSheTDIc99/M74BK9tpWZ2v/Ep7DWlstSn5TbpLDRli9R DCFlBUILitprQxTn5EF3MARI2WZ9jqqWoTh8+3WB1o/ELDJ6W3hV8esiPTxSPPca9qsW NVI21YLyhFV+tqGr4moVF/CLAFiyZErev9g6/KqrL8gVl+mY8PdxQCur4EjuBO+QcXMK fSOxi9/0S321BUIF+V42BozlqNpZVb9qwVTKxp5G/eI4uG0iLDNkGLwt1k920HdtIdLQ PS3A== X-Gm-Message-State: AOJu0YyJ50x5jWWiUxZMP+gmRmjV0hzTr/B09eLdpse+kXBa9TxnSmk3 T8Vels7jL7sFs3x1N4pUIQHqUfIbehwrcSyfyrFaqTtnxdoqpLU1Ai1//qL/K0I+KVIcmtaoE1y vFA== X-Google-Smtp-Source: AGHT+IGB88xDhOmLkYM8uO8zQxI10w4y/bqJWwoieXGYn8llJcu4nyCnZH6T1De8EEh7OBqPBXy+MKkQjwI= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a05:6a00:9298:b0:6e6:c3bc:721e with SMTP id jw24-20020a056a00929800b006e6c3bc721emr129688pfb.1.1710458829531; Thu, 14 Mar 2024 16:27:09 -0700 (PDT) Date: Thu, 14 Mar 2024 16:26:35 -0700 In-Reply-To: <20240314232637.2538648-1-seanjc@google.com> Mime-Version: 1.0 References: <20240314232637.2538648-1-seanjc@google.com> X-Mailer: git-send-email 2.44.0.291.gc1ea87d7ee-goog Message-ID: <20240314232637.2538648-17-seanjc@google.com> Subject: [PATCH 16/18] KVM: selftests: Add macro for TSS selector, rename up code/data macros From: Sean Christopherson To: Marc Zyngier , Oliver Upton , Paolo Bonzini , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Sean Christopherson , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Ackerley Tng X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240314_162713_247564_DD472DCD X-CRM114-Status: GOOD ( 12.48 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Sean Christopherson Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add a proper #define for the TSS selector instead of open coding 0x18 and hoping future developers don't use that selector for something else. Opportunistically rename the code and data selector macros to shorten the names, align the naming with the kernel's scheme, and capture that they are *kernel* segments. Signed-off-by: Sean Christopherson Reviewed-by: Ackerley Tng --- .../selftests/kvm/lib/x86_64/processor.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c index 03b9387a1d2e..67235013f6f9 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/processor.c +++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c @@ -15,8 +15,9 @@ #define NUM_INTERRUPTS 256 #endif -#define DEFAULT_CODE_SELECTOR 0x8 -#define DEFAULT_DATA_SELECTOR 0x10 +#define KERNEL_CS 0x8 +#define KERNEL_DS 0x10 +#define KERNEL_TSS 0x18 #define MAX_NR_CPUID_ENTRIES 100 @@ -547,11 +548,11 @@ static void vcpu_init_sregs(struct kvm_vm *vm, struct kvm_vcpu *vcpu) sregs.efer |= (EFER_LME | EFER_LMA | EFER_NX); kvm_seg_set_unusable(&sregs.ldt); - kvm_seg_set_kernel_code_64bit(vm, DEFAULT_CODE_SELECTOR, &sregs.cs); - kvm_seg_set_kernel_data_64bit(vm, DEFAULT_DATA_SELECTOR, &sregs.ds); - kvm_seg_set_kernel_data_64bit(vm, DEFAULT_DATA_SELECTOR, &sregs.es); - kvm_seg_set_kernel_data_64bit(NULL, DEFAULT_DATA_SELECTOR, &sregs.gs); - kvm_setup_tss_64bit(vm, &sregs.tr, 0x18); + kvm_seg_set_kernel_code_64bit(vm, KERNEL_CS, &sregs.cs); + kvm_seg_set_kernel_data_64bit(vm, KERNEL_DS, &sregs.ds); + kvm_seg_set_kernel_data_64bit(vm, KERNEL_DS, &sregs.es); + kvm_seg_set_kernel_data_64bit(NULL, KERNEL_DS, &sregs.gs); + kvm_setup_tss_64bit(vm, &sregs.tr, KERNEL_TSS); sregs.cr3 = vm->pgd; vcpu_sregs_set(vcpu, &sregs); @@ -620,8 +621,7 @@ static void vm_init_descriptor_tables(struct kvm_vm *vm) /* Handlers have the same address in both address spaces.*/ for (i = 0; i < NUM_INTERRUPTS; i++) - set_idt_entry(vm, i, (unsigned long)(&idt_handlers)[i], 0, - DEFAULT_CODE_SELECTOR); + set_idt_entry(vm, i, (unsigned long)(&idt_handlers)[i], 0, KERNEL_CS); *(vm_vaddr_t *)addr_gva2hva(vm, (vm_vaddr_t)(&exception_handlers)) = vm->handlers; } From patchwork Thu Mar 14 23:26:36 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Christopherson X-Patchwork-Id: 13592990 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 35DCDC54E5D for ; Fri, 15 Mar 2024 01:47:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:Reply-To:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:From:Subject:Message-ID :References:Mime-Version:In-Reply-To:Date:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=pVaUTpeSz72W1sJqi5jFKjiwTUOWnYMWJDG6rorM9Bs=; b=5EFa3FTT4LDR5M TdM9PBLHGpMU7RJg4iRrlYM/vSOS0W+2ZJgqiA+W9RersfySkOfq+vRVcGISHWm8fI8lD7tpkR+6A qGRSzQvo+h2K80MgJ5dgNdbkXoKziMpgIQ0bJPjIvHhII4C2OJsdkzjSvJ2X7cZ5Pb03pNBhx2sbS l8tUPWEoou63n9C7EPUnwinm5wAG5Ue9xBHsvmOv4ds+0srOWW5vt7Z84W6rQPC8wCyg6GF+mTh7C BeL0UFs0KdEws8ID4E6H+qTC5r2y3v9puB7yRIRTbebGSxAJX1X1UDRVDc3N9u9CuCr+ShG4llnZ9 D5KjggwLtTFUIfSB/oSw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkwex-0000000GLcD-2acK; Fri, 15 Mar 2024 01:46:59 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkuTo-0000000G0Ki-0rYi for linux-arm-kernel@bombadil.infradead.org; Thu, 14 Mar 2024 23:27:20 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Type:Cc:To:From:Subject: Message-ID:References:Mime-Version:In-Reply-To:Date:Reply-To:Sender: Content-Transfer-Encoding:Content-ID:Content-Description; bh=IJnvo3GlUCWm+9Z87DTK6fPvvH2dyec9Q+4IWGvi0gE=; b=i+OOCEwZENChDejEFwGAYdrnRx ygT8kHNCxZqrWUQP2u2cn/hBXm/0mOm1OLPskGVc1UQZtzVIeHawrDa0/rMhNOYMM1vRi2p2mRTmu mg9nK78b38PVr2htj4IkWGniOSq2NL/t9NEK0ETKN5wTtC2R5NGb4FHl2saNgmzObktCJI564py9p Xx/gqzcg7Q5B3AHIAoQlDv28myRT8QFKK1WzAjc9FJ9DxKzWzviB7MP9pJKU1gaw+29+XNxcKsDdv ZhYw4RETcnin+jpA0328GaDJIGcGaVdzplag7EbwJ72vJz9FgTrEof5w8dKxWHo589GtDI8y9iMIh eRCAgFVw==; Received: from mail-pf1-x44a.google.com ([2607:f8b0:4864:20::44a]) by desiato.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkuTh-0000000Aivg-3Ei1 for linux-arm-kernel@lists.infradead.org; Thu, 14 Mar 2024 23:27:16 +0000 Received: by mail-pf1-x44a.google.com with SMTP id d2e1a72fcca58-6e6d3768d06so1015538b3a.0 for ; Thu, 14 Mar 2024 16:27:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1710458831; x=1711063631; darn=lists.infradead.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=IJnvo3GlUCWm+9Z87DTK6fPvvH2dyec9Q+4IWGvi0gE=; b=WecS4PMu5kVGHPztti6TMUbYXo8KDCxND2rnCiM1Kq9LDhs8kbI0r8FopO1rtdcSX3 7YagoKFS4VMQlDcxCt0lZgJ0GkWQ167Q/H7zt88ICOF7Liofxs0w+Feg64dPB7cjDOS8 iBQBfgtUpngHeWEEbqlnofBqRCb2WwAlu8gUknB+2LyWKvZoXavvWWMIJ6vuBOHZTq3w wSH5NMeL5ircE92QRhwHEteANllQnw3wsuLFeGpFKe5PA8SS89rPZdOR/YQ/Zjh4TvG+ XmsL+RTWbGYxDKT7wHSmWYqM+B6V4WThdxEWgO1vpHhy4XpMD+ttHlLShW9YdPgkU/3N Ngeg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710458831; x=1711063631; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=IJnvo3GlUCWm+9Z87DTK6fPvvH2dyec9Q+4IWGvi0gE=; b=GrgI0My88luFK1knQ+GX7Q6nLGyripv008FuRzTjcwnLBB6MI3nXncSkaTed47t7LB G8kPccZt9mcJQi/98u89FSF7X8pxIqNWga3y4dtS1ljOhCE2XLUbgMtYdUTnllGimnsS DjdNar8bSW7gm1afKhDbijcVXd/br/xJgggMOyUmoamw/G2Rupe+UPkD8UW9tq77sbC9 Wi+9cU7N+x3/RxQ3V5xIySEPtfoIb3eByWdUboLgN4I6TyvROcd9qwbtanMVS9Cd2rBV DZZQcWGyVD4jfUajI2TzwUBLb0dxniudXycxsoRPWHrRbS5veuXxjKcIOtRP27luQBG+ NaFw== X-Gm-Message-State: AOJu0YxohBgL8enBxTkja75AubVIa4h5QhLLC+23AuFJXDG9dmcqK1V+ 3RsTWz5bJISLR7oO33dGnknyZ21MxQDsng9u4MrAZKGv3l7OLh1XEB8YT3aCKrJWnXdZkpkevVK Q9Q== X-Google-Smtp-Source: AGHT+IFXKsJZcktPEDJdv6TjhHXL21Zrt9AN04hKeTmJyyHIm5kk/8ldZSE0dO0H/MtumtcqHIdX1BiKE5Q= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a05:6a00:234c:b0:6e6:c38e:e9e3 with SMTP id j12-20020a056a00234c00b006e6c38ee9e3mr134457pfj.4.1710458831465; Thu, 14 Mar 2024 16:27:11 -0700 (PDT) Date: Thu, 14 Mar 2024 16:26:36 -0700 In-Reply-To: <20240314232637.2538648-1-seanjc@google.com> Mime-Version: 1.0 References: <20240314232637.2538648-1-seanjc@google.com> X-Mailer: git-send-email 2.44.0.291.gc1ea87d7ee-goog Message-ID: <20240314232637.2538648-18-seanjc@google.com> Subject: [PATCH 17/18] KVM: selftests: Init x86's segments during VM creation From: Sean Christopherson To: Marc Zyngier , Oliver Upton , Paolo Bonzini , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Sean Christopherson , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Ackerley Tng X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240314_232714_565367_C10A104F X-CRM114-Status: GOOD ( 11.11 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Sean Christopherson Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Initialize x86's various segments in the GDT during creation of relevant VMs instead of waiting until vCPUs come along. Re-installing the segments for every vCPU is both wasteful and confusing, as is installing KERNEL_DS multiple times; NOT installing KERNEL_DS for GS is icing on the cake. Signed-off-by: Sean Christopherson Reviewed-by: Ackerley Tng --- .../selftests/kvm/lib/x86_64/processor.c | 68 ++++++------------- 1 file changed, 20 insertions(+), 48 deletions(-) diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c index 67235013f6f9..dab719ee7734 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/processor.c +++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c @@ -438,24 +438,7 @@ static void kvm_seg_fill_gdt_64bit(struct kvm_vm *vm, struct kvm_segment *segp) desc->base3 = segp->base >> 32; } - -/* - * Set Long Mode Flat Kernel Code Segment - * - * Input Args: - * vm - VM whose GDT is being filled, or NULL to only write segp - * selector - selector value - * - * Output Args: - * segp - Pointer to KVM segment - * - * Return: None - * - * Sets up the KVM segment pointed to by @segp, to be a code segment - * with the selector value given by @selector. - */ -static void kvm_seg_set_kernel_code_64bit(struct kvm_vm *vm, uint16_t selector, - struct kvm_segment *segp) +static void kvm_seg_set_kernel_code_64bit(uint16_t selector, struct kvm_segment *segp) { memset(segp, 0, sizeof(*segp)); segp->selector = selector; @@ -467,27 +450,9 @@ static void kvm_seg_set_kernel_code_64bit(struct kvm_vm *vm, uint16_t selector, segp->g = true; segp->l = true; segp->present = 1; - if (vm) - kvm_seg_fill_gdt_64bit(vm, segp); } -/* - * Set Long Mode Flat Kernel Data Segment - * - * Input Args: - * vm - VM whose GDT is being filled, or NULL to only write segp - * selector - selector value - * - * Output Args: - * segp - Pointer to KVM segment - * - * Return: None - * - * Sets up the KVM segment pointed to by @segp, to be a data segment - * with the selector value given by @selector. - */ -static void kvm_seg_set_kernel_data_64bit(struct kvm_vm *vm, uint16_t selector, - struct kvm_segment *segp) +static void kvm_seg_set_kernel_data_64bit(uint16_t selector, struct kvm_segment *segp) { memset(segp, 0, sizeof(*segp)); segp->selector = selector; @@ -498,8 +463,6 @@ static void kvm_seg_set_kernel_data_64bit(struct kvm_vm *vm, uint16_t selector, */ segp->g = true; segp->present = true; - if (vm) - kvm_seg_fill_gdt_64bit(vm, segp); } vm_paddr_t addr_arch_gva2gpa(struct kvm_vm *vm, vm_vaddr_t gva) @@ -517,16 +480,15 @@ vm_paddr_t addr_arch_gva2gpa(struct kvm_vm *vm, vm_vaddr_t gva) return vm_untag_gpa(vm, PTE_GET_PA(*pte)) | (gva & ~HUGEPAGE_MASK(level)); } -static void kvm_setup_tss_64bit(struct kvm_vm *vm, struct kvm_segment *segp, - int selector) +static void kvm_seg_set_tss_64bit(vm_vaddr_t base, struct kvm_segment *segp, + int selector) { memset(segp, 0, sizeof(*segp)); - segp->base = vm->arch.tss; + segp->base = base; segp->limit = 0x67; segp->selector = selector; segp->type = 0xb; segp->present = 1; - kvm_seg_fill_gdt_64bit(vm, segp); } static void vcpu_init_sregs(struct kvm_vm *vm, struct kvm_vcpu *vcpu) @@ -548,11 +510,11 @@ static void vcpu_init_sregs(struct kvm_vm *vm, struct kvm_vcpu *vcpu) sregs.efer |= (EFER_LME | EFER_LMA | EFER_NX); kvm_seg_set_unusable(&sregs.ldt); - kvm_seg_set_kernel_code_64bit(vm, KERNEL_CS, &sregs.cs); - kvm_seg_set_kernel_data_64bit(vm, KERNEL_DS, &sregs.ds); - kvm_seg_set_kernel_data_64bit(vm, KERNEL_DS, &sregs.es); - kvm_seg_set_kernel_data_64bit(NULL, KERNEL_DS, &sregs.gs); - kvm_setup_tss_64bit(vm, &sregs.tr, KERNEL_TSS); + kvm_seg_set_kernel_code_64bit(KERNEL_CS, &sregs.cs); + kvm_seg_set_kernel_data_64bit(KERNEL_DS, &sregs.ds); + kvm_seg_set_kernel_data_64bit(KERNEL_DS, &sregs.es); + kvm_seg_set_kernel_data_64bit(KERNEL_DS, &sregs.gs); + kvm_seg_set_tss_64bit(vm->arch.tss, &sregs.tr, KERNEL_TSS); sregs.cr3 = vm->pgd; vcpu_sregs_set(vcpu, &sregs); @@ -612,6 +574,7 @@ void route_exception(struct ex_regs *regs) static void vm_init_descriptor_tables(struct kvm_vm *vm) { extern void *idt_handlers; + struct kvm_segment seg; int i; vm->arch.gdt = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA); @@ -624,6 +587,15 @@ static void vm_init_descriptor_tables(struct kvm_vm *vm) set_idt_entry(vm, i, (unsigned long)(&idt_handlers)[i], 0, KERNEL_CS); *(vm_vaddr_t *)addr_gva2hva(vm, (vm_vaddr_t)(&exception_handlers)) = vm->handlers; + + kvm_seg_set_kernel_code_64bit(KERNEL_CS, &seg); + kvm_seg_fill_gdt_64bit(vm, &seg); + + kvm_seg_set_kernel_data_64bit(KERNEL_DS, &seg); + kvm_seg_fill_gdt_64bit(vm, &seg); + + kvm_seg_set_tss_64bit(vm->arch.tss, &seg, KERNEL_TSS); + kvm_seg_fill_gdt_64bit(vm, &seg); } void vm_install_exception_handler(struct kvm_vm *vm, int vector, From patchwork Thu Mar 14 23:26:37 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Christopherson X-Patchwork-Id: 13592924 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A0279C54E60 for ; Thu, 14 Mar 2024 23:30:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:Reply-To:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:From:Subject:Message-ID :References:Mime-Version:In-Reply-To:Date:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=lNd5flcCet+H09mwaP1iwu73q2+Rr2mW20tz1hFCPfk=; b=kbHk644bube5Sn WAR12WDm9gnlOmGd3NP1+FgL+lfelKz31Pfgqas1b9RACdmafKqJkB4j7Zu7CiCVvnQwf6bhRJaCB smMPAkN5+PLnbtTPVnGP3efE8dUwpavgAGRyifFhNSwi/he1wapa9yh7O+tywKYkQFdaQVowiH7m2 gh6JaBvas74Am75MIOXijY7MAom7+Iwh6+2Z3gDt6n2DYNr2W+T1bahPdu1Jo62xH+POOLAyzCqO8 Mjkh1OCM8BI7NpWITi0dUKhh8PAGRd8N4pTbM/odEVSfJCI12ZmY7XE4UYg9Klqepmi7kKX8ctFPp rAnkLWeVOBdgrUx5ruHw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkuWv-0000000G2Vt-32y8; Thu, 14 Mar 2024 23:30:33 +0000 Received: from mail-pg1-x549.google.com ([2607:f8b0:4864:20::549]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rkuTo-0000000G0JP-0MPI for linux-arm-kernel@lists.infradead.org; Thu, 14 Mar 2024 23:27:24 +0000 Received: by mail-pg1-x549.google.com with SMTP id 41be03b00d2f7-5e4df21f22dso1147165a12.0 for ; Thu, 14 Mar 2024 16:27:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1710458835; x=1711063635; darn=lists.infradead.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=fVWd/4nHkGU+RZSRNxZTIKvgC6ZcIUosAi3U9bNiK5o=; b=QwEJn3MA9pM5ifUwHbk28G4Ef+y07rwNcSdxnjXQKVIz/GaXb2eq+bE3Y8YVw822OK 8bCz2GVfLsb8rYBHlEN74ZJs3SD6vBZoXUv8ZPkIGjzW3HHjgUY7xqBRO9Y/JrQtnmN4 f2e4g+5giGcGBmbGQ+bk1saTCPHWPS7Ni/644hgOVz029n2RZ2Us06CEPKyvi0ihVhTo a43tP/X/cd12XOQtHYNC7f5CF4khZHo2KG3AdWDV4BnOng7sTnVpFYpOlmZh5V1gTuT9 tjsZSXgXvtR8NXGWy3VzERTPATa9NvH+QYCuwSKOA/fy8fbncEiZyRpNGbM5cQtFMMjm nItQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710458835; x=1711063635; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=fVWd/4nHkGU+RZSRNxZTIKvgC6ZcIUosAi3U9bNiK5o=; b=N6yjWJZzot/Waerz/D/KzQQu5Im9EgZJbn4gAKVOvFrQYWBObhNPFdzVHNfIoZS5cN 0EX0F/BLDWhJNBNfyXvfO6Y76UphILUTJChek5hQqJkrcKP0LdYFgFOSHpA2DiJBAJRx 3MMGa4Vy9UDTy4T2fx9gs2ak0nODk54QAuiasPGP+jll61Cl+y3ortKGN+zoH73Pt110 4GH3ohaTOICr+1fqzfxhxUFHJD68OxJ19jQOfDxpjRLvagcMkgmVRhQ/0j8BV8QQa6nE 81ILKW1o8Aai3fv4B3G/Sl3rrZ9ou532KTVHWLNiRv8l5pmlvR4cVAqAs+A00wWm407f tPpQ== X-Gm-Message-State: AOJu0Yxywdr0BlA2phPZfnVcyWsNqhHLDlCiXdtmr0jYwiGyDYsQLReg TkSmdel9wmrbPfIXt4okYds5O/WlGkLnB+7uL3wR1fvRvVHwYArErA608v9kTX2OLSFd0xUqlgf fUQ== X-Google-Smtp-Source: AGHT+IGRI5hc5CP3CR9IYz2Kmbchzln3C1e7PEoGzqGhInO36w6Nc4buOmgVEVYtprnFqx8Z8ErRa1R6iOg= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a63:6483:0:b0:5dc:2a75:9a19 with SMTP id y125-20020a636483000000b005dc2a759a19mr12387pgb.2.1710458834658; Thu, 14 Mar 2024 16:27:14 -0700 (PDT) Date: Thu, 14 Mar 2024 16:26:37 -0700 In-Reply-To: <20240314232637.2538648-1-seanjc@google.com> Mime-Version: 1.0 References: <20240314232637.2538648-1-seanjc@google.com> X-Mailer: git-send-email 2.44.0.291.gc1ea87d7ee-goog Message-ID: <20240314232637.2538648-19-seanjc@google.com> Subject: [PATCH 18/18] KVM: selftests: Drop @selector from segment helpers From: Sean Christopherson To: Marc Zyngier , Oliver Upton , Paolo Bonzini , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Sean Christopherson , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Ackerley Tng X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240314_162720_280119_C798D87F X-CRM114-Status: GOOD ( 14.17 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Sean Christopherson Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Drop the @selector from the kernel code, data, and TSS builders and instead hardcode the respective selector in the helper. Accepting a selector but not a base makes the selector useless, e.g. the data helper can't create per-vCPU for FS or GS, and so loading GS with KERNEL_DS is the only logical choice. And for code and TSS, there is no known reason to ever want multiple segments, e.g. there are zero plans to support 32-bit kernel code (and again, that would require more than just the selector). If KVM selftests ever do add support for per-vCPU segments, it'd arguably be more readable to add a dedicated helper for building/setting the per-vCPU segment, and move the common data segment code to an inner helper. Lastly, hardcoding the selector reduces the probability of setting the wrong selector in the vCPU versus what was created by the VM in the GDT. Signed-off-by: Sean Christopherson Reviewed-by: Ackerley Tng --- .../selftests/kvm/lib/x86_64/processor.c | 29 +++++++++---------- 1 file changed, 14 insertions(+), 15 deletions(-) diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c index dab719ee7734..6abd50d6e59d 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/processor.c +++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c @@ -438,10 +438,10 @@ static void kvm_seg_fill_gdt_64bit(struct kvm_vm *vm, struct kvm_segment *segp) desc->base3 = segp->base >> 32; } -static void kvm_seg_set_kernel_code_64bit(uint16_t selector, struct kvm_segment *segp) +static void kvm_seg_set_kernel_code_64bit(struct kvm_segment *segp) { memset(segp, 0, sizeof(*segp)); - segp->selector = selector; + segp->selector = KERNEL_CS; segp->limit = 0xFFFFFFFFu; segp->s = 0x1; /* kTypeCodeData */ segp->type = 0x08 | 0x01 | 0x02; /* kFlagCode | kFlagCodeAccessed @@ -452,10 +452,10 @@ static void kvm_seg_set_kernel_code_64bit(uint16_t selector, struct kvm_segment segp->present = 1; } -static void kvm_seg_set_kernel_data_64bit(uint16_t selector, struct kvm_segment *segp) +static void kvm_seg_set_kernel_data_64bit(struct kvm_segment *segp) { memset(segp, 0, sizeof(*segp)); - segp->selector = selector; + segp->selector = KERNEL_DS; segp->limit = 0xFFFFFFFFu; segp->s = 0x1; /* kTypeCodeData */ segp->type = 0x00 | 0x01 | 0x02; /* kFlagData | kFlagDataAccessed @@ -480,13 +480,12 @@ vm_paddr_t addr_arch_gva2gpa(struct kvm_vm *vm, vm_vaddr_t gva) return vm_untag_gpa(vm, PTE_GET_PA(*pte)) | (gva & ~HUGEPAGE_MASK(level)); } -static void kvm_seg_set_tss_64bit(vm_vaddr_t base, struct kvm_segment *segp, - int selector) +static void kvm_seg_set_tss_64bit(vm_vaddr_t base, struct kvm_segment *segp) { memset(segp, 0, sizeof(*segp)); segp->base = base; segp->limit = 0x67; - segp->selector = selector; + segp->selector = KERNEL_TSS; segp->type = 0xb; segp->present = 1; } @@ -510,11 +509,11 @@ static void vcpu_init_sregs(struct kvm_vm *vm, struct kvm_vcpu *vcpu) sregs.efer |= (EFER_LME | EFER_LMA | EFER_NX); kvm_seg_set_unusable(&sregs.ldt); - kvm_seg_set_kernel_code_64bit(KERNEL_CS, &sregs.cs); - kvm_seg_set_kernel_data_64bit(KERNEL_DS, &sregs.ds); - kvm_seg_set_kernel_data_64bit(KERNEL_DS, &sregs.es); - kvm_seg_set_kernel_data_64bit(KERNEL_DS, &sregs.gs); - kvm_seg_set_tss_64bit(vm->arch.tss, &sregs.tr, KERNEL_TSS); + kvm_seg_set_kernel_code_64bit(&sregs.cs); + kvm_seg_set_kernel_data_64bit(&sregs.ds); + kvm_seg_set_kernel_data_64bit(&sregs.es); + kvm_seg_set_kernel_data_64bit(&sregs.gs); + kvm_seg_set_tss_64bit(vm->arch.tss, &sregs.tr); sregs.cr3 = vm->pgd; vcpu_sregs_set(vcpu, &sregs); @@ -588,13 +587,13 @@ static void vm_init_descriptor_tables(struct kvm_vm *vm) *(vm_vaddr_t *)addr_gva2hva(vm, (vm_vaddr_t)(&exception_handlers)) = vm->handlers; - kvm_seg_set_kernel_code_64bit(KERNEL_CS, &seg); + kvm_seg_set_kernel_code_64bit(&seg); kvm_seg_fill_gdt_64bit(vm, &seg); - kvm_seg_set_kernel_data_64bit(KERNEL_DS, &seg); + kvm_seg_set_kernel_data_64bit(&seg); kvm_seg_fill_gdt_64bit(vm, &seg); - kvm_seg_set_tss_64bit(vm->arch.tss, &seg, KERNEL_TSS); + kvm_seg_set_tss_64bit(vm->arch.tss, &seg); kvm_seg_fill_gdt_64bit(vm, &seg); }