linux-kernel - [PATCH v2 15/42] KVM: selftests: Use kvm_cpu

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Message-Id: <20220614200707.3315957-16-seanjc@google.com>
Date:   Tue, 14 Jun 2022 20:06:40 +0000
From:   Sean Christopherson <seanjc@...gle.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Sean Christopherson <seanjc@...gle.com>,
        Jim Mattson <jmattson@...gle.com>
Subject: [PATCH v2 15/42] KVM: selftests: Use kvm_cpu_has() for nSVM soft INT
 injection test

Use kvm_cpu_has() to query for NRIPS support instead of open coding
equivalent functionality using kvm_get_supported_cpuid_entry().

Signed-off-by: Sean Christopherson <seanjc@...gle.com>
---
 tools/testing/selftests/kvm/include/x86_64/processor.h     | 3 ---
 .../selftests/kvm/x86_64/svm_nested_soft_inject_test.c     | 7 ++-----
 2 files changed, 2 insertions(+), 8 deletions(-)

diff --git a/tools/testing/selftests/kvm/include/x86_64/processor.h b/tools/testing/selftests/kvm/include/x86_64/processor.h
index db8d5a2775dd..f5fa7d2e44a6 100644
--- a/tools/testing/selftests/kvm/include/x86_64/processor.h
+++ b/tools/testing/selftests/kvm/include/x86_64/processor.h
@@ -162,9 +162,6 @@ struct kvm_x86_cpu_feature {
 #define CPUID_XSAVE		(1ul << 26)
 #define CPUID_OSXSAVE		(1ul << 27)
 
-/* CPUID.0x8000_000A.EDX */
-#define CPUID_NRIPS		BIT(3)
-
 /* Page table bitfield declarations */
 #define PTE_PRESENT_MASK        BIT_ULL(0)
 #define PTE_WRITABLE_MASK       BIT_ULL(1)
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 3c21b997fe3a..edf7f2378c76 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
@@ -195,16 +195,13 @@ static void run_test(bool is_nmi)
 
 int main(int argc, char *argv[])
 {
-	struct kvm_cpuid_entry2 *cpuid;
-
 	/* Tell stdout not to buffer its content */
 	setbuf(stdout, NULL);
 
 	TEST_REQUIRE(kvm_cpu_has(X86_FEATURE_SVM));
 
-	cpuid = kvm_get_supported_cpuid_entry(0x8000000a);
-	TEST_ASSERT(cpuid->edx & CPUID_NRIPS,
-		    "KVM with nSVM is supposed to unconditionally advertise nRIP Save\n");
+	TEST_ASSERT(kvm_cpu_has(X86_FEATURE_NRIPS),
+		    "KVM with nSVM is supposed to unconditionally advertise nRIP Save");
 
 	atomic_init(&nmi_stage, 0);
 
-- 
2.36.1.476.g0c4daa206d-goog