From patchwork Wed Jan 11 00:44:43 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vishal Annapurve X-Patchwork-Id: 13095785 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 EB418C46467 for ; Wed, 11 Jan 2023 00:45:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235733AbjAKApb (ORCPT ); Tue, 10 Jan 2023 19:45:31 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49242 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235749AbjAKApG (ORCPT ); Tue, 10 Jan 2023 19:45:06 -0500 Received: from mail-pg1-x54a.google.com (mail-pg1-x54a.google.com [IPv6:2607:f8b0:4864:20::54a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DB3BB5A8A3 for ; Tue, 10 Jan 2023 16:45:04 -0800 (PST) Received: by mail-pg1-x54a.google.com with SMTP id w185-20020a6382c2000000b004b1fcf39c18so3774073pgd.13 for ; Tue, 10 Jan 2023 16:45:04 -0800 (PST) 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:subject:date:message-id:reply-to; bh=i5nmfF04B2IHgLFB8aCXKpeIh21CW5hhnA3Zs7nsESA=; b=eO2t/+pj8mPlLMMdcEpbBNko4TJswSnywcF/DfhdxgABLVsoaSv5PwBNwl3Qma9Q/J eXScNp2W/dA8aEVblqFCjNCBjYCy9lZ5DfDFpoVJQKW8nt15tQ3gpISUZq51HTO6+LPn Ht8MK+yMvyLmKBsjXWJ9uxI1h77qVAgk6m/k3gQJCqiCjR1XHVpLSTLdyyEjfFJ4EOGp x29Ky/AliXXIegn4/Dy/8vOdvdCxB4TSCf6e71+HcES1hoOOQDGKH7WBjui1oH2Wk3ZQ Xfcy/crmDd6kyKLEaGlEjLbmhm6FKCgH/DBXy7teV2ghTi/tFYfy00Vm75JHekaMbbYa Mt7Q== 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:subject:date:message-id:reply-to; bh=i5nmfF04B2IHgLFB8aCXKpeIh21CW5hhnA3Zs7nsESA=; b=3TKt3G/8LxjckIVAhaVUpfEAB9E+0cblTV0mQFmgil/3Z+HkakV7CrVFVjudmGvUVY YZ1+DJoyeBNZm+lelPpR73bL+29pf9PYDPN1trpgNThucyuUmUx/EpK54Xk3n8kwaVnV zRptHQXasnKIXUN+wuviVSfST1/6k83THUjVlDZLCRYNc1CNDshihSSHIkwLtNs1CKlG fULy3ogIS9Qf4uzE8aUr4Ha7sda88kFbWNGUMLjJvh4kxIYxnMJaaH9MyhdE7m/ZOfWr Z0QagE/e7RQaAjhJFcPiM5anjS19ZDyDdB0aE8FzcDCqFF/ApyMRRdMyPqf2rvwBxUxh Z3Og== X-Gm-Message-State: AFqh2kq9mUdGzsD1T74n9mcAjW9f9O9gY/OZ3BUm/4UBCaE4hJIRye60 HLrEY9y2MpZDeCZpbJs0GeHyjhp0FIjFsROR X-Google-Smtp-Source: AMrXdXvIsZvqIwPXVSDDcpOSnlLt/VOqLw9atFZ7FZqmkCAhzULy+I69nrXjKn/XLRy+k8kzhieWBXvtznW6559i X-Received: from vannapurve2.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:41f8]) (user=vannapurve job=sendgmr) by 2002:aa7:81d4:0:b0:577:5678:bc80 with SMTP id c20-20020aa781d4000000b005775678bc80mr5338691pfn.62.1673397904191; Tue, 10 Jan 2023 16:45:04 -0800 (PST) Date: Wed, 11 Jan 2023 00:44:43 +0000 In-Reply-To: <20230111004445.416840-1-vannapurve@google.com> Mime-Version: 1.0 References: <20230111004445.416840-1-vannapurve@google.com> X-Mailer: git-send-email 2.39.0.314.g84b9a713c41-goog Message-ID: <20230111004445.416840-2-vannapurve@google.com> Subject: [V5 PATCH 1/3] KVM: selftests: x86: Use "this_cpu" prefix for cpu vendor queries 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, shuah@kernel.org, bgardon@google.com, seanjc@google.com, oupton@google.com, peterx@redhat.com, vkuznets@redhat.com, dmatlack@google.com, pgonda@google.com, andrew.jones@linux.dev, Vishal Annapurve Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Replace is_intel/amd_cpu helpers with this_cpu_* helpers to better convey the intent of querying vendor of the current cpu. Suggested-by: Sean Christopherson Reviewed-by: David Matlack Signed-off-by: Vishal Annapurve --- .../selftests/kvm/include/x86_64/processor.h | 25 +++++++++++++++--- .../selftests/kvm/lib/x86_64/processor.c | 26 ++----------------- .../selftests/kvm/x86_64/fix_hypercall_test.c | 4 +-- .../selftests/kvm/x86_64/mmio_warning_test.c | 2 +- .../kvm/x86_64/pmu_event_filter_test.c | 4 +-- .../vmx_exception_with_invalid_guest_state.c | 2 +- 6 files changed, 30 insertions(+), 33 deletions(-) diff --git a/tools/testing/selftests/kvm/include/x86_64/processor.h b/tools/testing/selftests/kvm/include/x86_64/processor.h index 2a5f47d51388..fdb1af5ca611 100644 --- a/tools/testing/selftests/kvm/include/x86_64/processor.h +++ b/tools/testing/selftests/kvm/include/x86_64/processor.h @@ -555,6 +555,28 @@ static inline uint32_t this_cpu_model(void) return x86_model(this_cpu_fms()); } +static inline bool this_cpu_vendor_string_is(const char *vendor) +{ + const uint32_t *chunk = (const uint32_t *)vendor; + uint32_t eax, ebx, ecx, edx; + + cpuid(0, &eax, &ebx, &ecx, &edx); + return (ebx == chunk[0] && edx == chunk[1] && ecx == chunk[2]); +} + +static inline bool this_cpu_is_intel(void) +{ + return this_cpu_vendor_string_is("GenuineIntel"); +} + +/* + * Exclude early K5 samples with a vendor string of "AMDisbetter!" + */ +static inline bool this_cpu_is_amd(void) +{ + return this_cpu_vendor_string_is("AuthenticAMD"); +} + static inline uint32_t __this_cpu_has(uint32_t function, uint32_t index, uint8_t reg, uint8_t lo, uint8_t hi) { @@ -691,9 +713,6 @@ static inline void cpu_relax(void) "hlt\n" \ ) -bool is_intel_cpu(void); -bool is_amd_cpu(void); - struct kvm_x86_state *vcpu_save_state(struct kvm_vcpu *vcpu); void vcpu_load_state(struct kvm_vcpu *vcpu, struct kvm_x86_state *state); void kvm_x86_state_cleanup(struct kvm_x86_state *state); diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c index acfa1d01e7df..7d1768543b91 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/processor.c +++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c @@ -113,7 +113,7 @@ static void sregs_dump(FILE *stream, struct kvm_sregs *sregs, uint8_t indent) bool kvm_is_tdp_enabled(void) { - if (is_intel_cpu()) + if (this_cpu_is_intel()) return get_kvm_intel_param_bool("ept"); else return get_kvm_amd_param_bool("npt"); @@ -1006,28 +1006,6 @@ void kvm_x86_state_cleanup(struct kvm_x86_state *state) free(state); } -static bool cpu_vendor_string_is(const char *vendor) -{ - const uint32_t *chunk = (const uint32_t *)vendor; - uint32_t eax, ebx, ecx, edx; - - cpuid(0, &eax, &ebx, &ecx, &edx); - return (ebx == chunk[0] && edx == chunk[1] && ecx == chunk[2]); -} - -bool is_intel_cpu(void) -{ - return cpu_vendor_string_is("GenuineIntel"); -} - -/* - * Exclude early K5 samples with a vendor string of "AMDisbetter!" - */ -bool is_amd_cpu(void) -{ - return cpu_vendor_string_is("AuthenticAMD"); -} - void kvm_get_cpu_address_width(unsigned int *pa_bits, unsigned int *va_bits) { if (!kvm_cpu_has_p(X86_PROPERTY_MAX_PHY_ADDR)) { @@ -1236,7 +1214,7 @@ unsigned long vm_compute_max_gfn(struct kvm_vm *vm) max_gfn = (1ULL << (vm->pa_bits - vm->page_shift)) - 1; /* Avoid reserved HyperTransport region on AMD processors. */ - if (!is_amd_cpu()) + if (!this_cpu_is_amd()) return max_gfn; /* On parts with <40 physical address bits, the area is fully hidden */ 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 32f7e09ef67c..5489c9836ec8 100644 --- a/tools/testing/selftests/kvm/x86_64/fix_hypercall_test.c +++ b/tools/testing/selftests/kvm/x86_64/fix_hypercall_test.c @@ -48,10 +48,10 @@ static void guest_main(void) const uint8_t *other_hypercall_insn; uint64_t ret; - if (is_intel_cpu()) { + if (this_cpu_is_intel()) { native_hypercall_insn = vmx_vmcall; other_hypercall_insn = svm_vmmcall; - } else if (is_amd_cpu()) { + } else if (this_cpu_is_amd()) { native_hypercall_insn = svm_vmmcall; other_hypercall_insn = vmx_vmcall; } else { diff --git a/tools/testing/selftests/kvm/x86_64/mmio_warning_test.c b/tools/testing/selftests/kvm/x86_64/mmio_warning_test.c index fb02581953a3..b0a2a0bae0f3 100644 --- a/tools/testing/selftests/kvm/x86_64/mmio_warning_test.c +++ b/tools/testing/selftests/kvm/x86_64/mmio_warning_test.c @@ -93,7 +93,7 @@ int main(void) { int warnings_before, warnings_after; - TEST_REQUIRE(is_intel_cpu()); + TEST_REQUIRE(this_cpu_is_intel()); TEST_REQUIRE(!vm_is_unrestricted_guest(NULL)); 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 2de98fce7edd..c728822461b2 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 @@ -363,7 +363,7 @@ static void test_pmu_config_disable(void (*guest_code)(void)) */ static bool use_intel_pmu(void) { - return is_intel_cpu() && + return this_cpu_is_intel() && kvm_cpu_property(X86_PROPERTY_PMU_VERSION) && kvm_cpu_property(X86_PROPERTY_PMU_NR_GP_COUNTERS) && kvm_pmu_has(X86_PMU_FEATURE_BRANCH_INSNS_RETIRED); @@ -397,7 +397,7 @@ static bool use_amd_pmu(void) uint32_t family = kvm_cpu_family(); uint32_t model = kvm_cpu_model(); - return is_amd_cpu() && + return this_cpu_is_amd() && (is_zen1(family, model) || is_zen2(family, model) || is_zen3(family, model)); 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 2641b286b4ed..53e1ef2fc774 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 @@ -111,7 +111,7 @@ int main(int argc, char *argv[]) struct kvm_vcpu *vcpu; struct kvm_vm *vm; - TEST_REQUIRE(is_intel_cpu()); + TEST_REQUIRE(this_cpu_is_intel()); TEST_REQUIRE(!vm_is_unrestricted_guest(NULL)); vm = vm_create_with_one_vcpu(&vcpu, guest_code);