From patchwork Tue Aug 30 22:42:55 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vishal Annapurve X-Patchwork-Id: 12960048 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 70CCDECAAA1 for ; Tue, 30 Aug 2022 22:43:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232021AbiH3Wnu (ORCPT ); Tue, 30 Aug 2022 18:43:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39308 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231636AbiH3Wn2 (ORCPT ); Tue, 30 Aug 2022 18:43:28 -0400 Received: from mail-yb1-xb4a.google.com (mail-yb1-xb4a.google.com [IPv6:2607:f8b0:4864:20::b4a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0880D7C312 for ; Tue, 30 Aug 2022 15:43:25 -0700 (PDT) Received: by mail-yb1-xb4a.google.com with SMTP id d8-20020a25bc48000000b00680651cf051so810225ybk.23 for ; Tue, 30 Aug 2022 15:43:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc; bh=FnC2MODp1Ilbo/3qVuV673Djb8hUYYAKXHPp7uV/l3U=; b=QPd795t1C0ahrsS55brxetoonol6V2jAppY01knmBO6dTEexYKdxvNbkTSQcIcPS0g 2kVquW8pntnzZ8ayf2KGc74LWg1ImA0LODvDVKrQ5RNE9iPAZqoluWZufVPBUn48fc67 kW1IFw4yDbnloy5QQ/STgOmCIxz9plIKPFM0HDvfvRd0xIR/a+XXnVcrsaDE4dXMXlvp 2IrquyFJf8Ta/3dM4DHzEUE06trbxbXXW3PUtdEzPpNE9l9jhx85/6oghBZ5fuiPnSIa HihGAukLvraBpoNRHwoZwUflCiTPtuG2KVmnc5uUF0aSGnXsPpEIuWMW3HwQM/7lAwtJ qghA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc; bh=FnC2MODp1Ilbo/3qVuV673Djb8hUYYAKXHPp7uV/l3U=; b=IuZibRFcT0HZG6Z191qWhv9bWpXy6xWXjcGATdLlfVm1iI3+fHZYXLX7OUYnpjM7bw bM1Cc4CO8i4Xzjwu3GSaHuFsUAMCeOvABVtHJkmCU4DM71ztJXKDFYseun6087q4yrsk /d9I8kGnWz8mrK8W537IOtwmR9Qd4gsWhpNye0SyIQ6zC+1tDRCxOfBbqszVZn+WLiqz L1xaTVbINPLlExYgN/82/unSuaA2r/b7wMdCu4m0dUQ9LQLq2Nh8a5eTtLfhBJUjL7Zm TYtwW5FpsI0MSKCChVymA/YWCh/SLIfEyFbjzEJ91qKICO7hpjtDUp+L8SHttv4ctmLs g0FA== X-Gm-Message-State: ACgBeo2Bm3YNF3nBqOjYvfOCwjbYyr/Prgyy8fGAy1iTYASECbDPLtyy 6k7EGD4mG3pjJgjNNkYkyJh3fRja7aM53Wzt X-Google-Smtp-Source: AA6agR7J2g4yWWCjTXSW8bJGJNJQDF4Q6cZWWSd4WOmEIBPpC8PfIDGdBXAbKzkcTBd8rZjpqBovURMzodQSv4dn X-Received: from vannapurve2.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:41f8]) (user=vannapurve job=sendgmr) by 2002:a81:bb43:0:b0:33d:cdd9:aa56 with SMTP id a3-20020a81bb43000000b0033dcdd9aa56mr15659487ywl.240.1661899403835; Tue, 30 Aug 2022 15:43:23 -0700 (PDT) Date: Tue, 30 Aug 2022 22:42:55 +0000 In-Reply-To: <20220830224259.412342-1-vannapurve@google.com> Mime-Version: 1.0 References: <20220830224259.412342-1-vannapurve@google.com> X-Mailer: git-send-email 2.37.2.672.g94769d06f0-goog Message-ID: <20220830224259.412342-5-vannapurve@google.com> Subject: [RFC V2 PATCH 4/8] selftests: kvm: sev: Support memslots with private memory From: Vishal Annapurve To: x86@kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org Cc: pbonzini@redhat.com, vkuznets@redhat.com, wanpengli@tencent.com, jmattson@google.com, joro@8bytes.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, shuah@kernel.org, yang.zhong@intel.com, drjones@redhat.com, ricarkol@google.com, aaronlewis@google.com, wei.w.wang@intel.com, kirill.shutemov@linux.intel.com, corbet@lwn.net, hughd@google.com, jlayton@kernel.org, bfields@fieldses.org, akpm@linux-foundation.org, chao.p.peng@linux.intel.com, yu.c.zhang@linux.intel.com, jun.nakajima@intel.com, dave.hansen@intel.com, michael.roth@amd.com, qperret@google.com, steven.price@arm.com, ak@linux.intel.com, david@redhat.com, luto@kernel.org, vbabka@suse.cz, marcorr@google.com, erdemaktas@google.com, pgonda@google.com, nikunj@amd.com, seanjc@google.com, diviness@google.com, maz@kernel.org, dmatlack@google.com, axelrasmussen@google.com, maciej.szmigiero@oracle.com, mizhang@google.com, bgardon@google.com, Vishal Annapurve Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Introduce an additional helper API to create a SEV VM with private memory memslots. Signed-off-by: Vishal Annapurve --- tools/testing/selftests/kvm/include/x86_64/sev.h | 2 ++ tools/testing/selftests/kvm/lib/x86_64/sev.c | 15 ++++++++++++--- 2 files changed, 14 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/kvm/include/x86_64/sev.h b/tools/testing/selftests/kvm/include/x86_64/sev.h index b6552ea1c716..628801707917 100644 --- a/tools/testing/selftests/kvm/include/x86_64/sev.h +++ b/tools/testing/selftests/kvm/include/x86_64/sev.h @@ -38,6 +38,8 @@ void kvm_sev_ioctl(struct sev_vm *sev, int cmd, void *data); struct kvm_vm *sev_get_vm(struct sev_vm *sev); uint8_t sev_get_enc_bit(struct sev_vm *sev); +struct sev_vm *sev_vm_create_with_flags(uint32_t policy, uint64_t npages, + uint32_t memslot_flags); struct sev_vm *sev_vm_create(uint32_t policy, uint64_t npages); void sev_vm_free(struct sev_vm *sev); void sev_vm_launch(struct sev_vm *sev); diff --git a/tools/testing/selftests/kvm/lib/x86_64/sev.c b/tools/testing/selftests/kvm/lib/x86_64/sev.c index 44b5ce5cd8db..6a329ea17f9f 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/sev.c +++ b/tools/testing/selftests/kvm/lib/x86_64/sev.c @@ -171,7 +171,8 @@ void sev_vm_free(struct sev_vm *sev) free(sev); } -struct sev_vm *sev_vm_create(uint32_t policy, uint64_t npages) +struct sev_vm *sev_vm_create_with_flags(uint32_t policy, uint64_t npages, + uint32_t memslot_flags) { struct sev_vm *sev; struct kvm_vm *vm; @@ -188,9 +189,12 @@ struct sev_vm *sev_vm_create(uint32_t policy, uint64_t npages) vm->vpages_mapped = sparsebit_alloc(); vm_set_memory_encryption(vm, true, true, sev->enc_bit); pr_info("SEV cbit: %d\n", sev->enc_bit); - vm_userspace_mem_region_add(vm, VM_MEM_SRC_ANONYMOUS, 0, 0, npages, 0); - sev_register_user_region(sev, addr_gpa2hva(vm, 0), + vm_userspace_mem_region_add(vm, VM_MEM_SRC_ANONYMOUS, 0, 0, npages, + memslot_flags); + if (!(memslot_flags & KVM_MEM_PRIVATE)) { + sev_register_user_region(sev, addr_gpa2hva(vm, 0), npages * vm->page_size); + } pr_info("SEV guest created, policy: 0x%x, size: %lu KB\n", sev->sev_policy, npages * vm->page_size / 1024); @@ -198,6 +202,11 @@ struct sev_vm *sev_vm_create(uint32_t policy, uint64_t npages) return sev; } +struct sev_vm *sev_vm_create(uint32_t policy, uint64_t npages) +{ + return sev_vm_create_with_flags(policy, npages, 0); +} + void sev_vm_launch(struct sev_vm *sev) { struct kvm_sev_launch_start ksev_launch_start = {0};