Use this_cpu_has() to query OSXSAVE from the L1 guest in the CR4=>CPUID
sync test.
Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>
---
.../selftests/kvm/include/x86_64/processor.h | 3 ---
.../selftests/kvm/x86_64/cr4_cpuid_sync_test.c | 14 ++------------
2 files changed, 2 insertions(+), 15 deletions(-)
diff --git a/tools/testing/selftests/kvm/include/x86_64/processor.h b/tools/testing/selftests/kvm/include/x86_64/processor.h
index d79060f55307..db724670c895 100644
--- a/tools/testing/selftests/kvm/include/x86_64/processor.h
+++ b/tools/testing/selftests/kvm/include/x86_64/processor.h
@@ -158,9 +158,6 @@ struct kvm_x86_cpu_feature {
#define X86_FEATURE_KVM_HC_MAP_GPA_RANGE KVM_X86_CPU_FEATURE(0x40000001, 0, EAX, 16)
#define X86_FEATURE_KVM_MIGRATION_CONTROL KVM_X86_CPU_FEATURE(0x40000001, 0, EAX, 17)
-/* CPUID.1.ECX */
-#define CPUID_OSXSAVE (1ul << 27)
-
/* 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/cr4_cpuid_sync_test.c b/tools/testing/selftests/kvm/x86_64/cr4_cpuid_sync_test.c
index 092fedbe6f52..a310674b6974 100644
--- a/tools/testing/selftests/kvm/x86_64/cr4_cpuid_sync_test.c
+++ b/tools/testing/selftests/kvm/x86_64/cr4_cpuid_sync_test.c
@@ -21,19 +21,9 @@
static inline bool cr4_cpuid_is_sync(void)
{
- int func, subfunc;
- uint32_t eax, ebx, ecx, edx;
- uint64_t cr4;
+ uint64_t cr4 = get_cr4();
- func = 0x1;
- subfunc = 0x0;
- __asm__ __volatile__("cpuid"
- : "=a"(eax), "=b"(ebx), "=c"(ecx), "=d"(edx)
- : "a"(func), "c"(subfunc));
-
- cr4 = get_cr4();
-
- return (!!(ecx & CPUID_OSXSAVE)) == (!!(cr4 & X86_CR4_OSXSAVE));
+ return (this_cpu_has(X86_FEATURE_OSXSAVE) == !!(cr4 & X86_CR4_OSXSAVE));
}
static void guest_code(void)
--
2.36.1.255.ge46751e96f-goog
