[PATCH 07/11] KVM: selftests: Drop manual CR4.OSXSAVE enabling from CR4/CPUID sync test
From: Sean Christopherson
Date: Thu Oct 03 2024 - 19:46:13 EST
Now that CR4.OSXSAVE is enabled by default, drop the manual enabling from
CR4/CPUID sync test and instead assert that CR4.OSXSAVE is enabled.
Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>
---
tools/testing/selftests/kvm/x86_64/cr4_cpuid_sync_test.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
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 da818afb7031..28cc66454601 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
@@ -27,12 +27,9 @@ static void guest_code(void)
[KVM_CPUID_EAX] = X86_FEATURE_OSXSAVE.function,
[KVM_CPUID_ECX] = X86_FEATURE_OSXSAVE.index,
};
- uint64_t cr4;
- /* turn on CR4.OSXSAVE */
- cr4 = get_cr4();
- cr4 |= X86_CR4_OSXSAVE;
- set_cr4(cr4);
+ /* CR4.OSXSAVE should be enabled by default (for selftests vCPUs). */
+ GUEST_ASSERT(get_cr4() & X86_CR4_OSXSAVE);
/* verify CR4.OSXSAVE == CPUID.OSXSAVE */
GUEST_ASSERT(this_cpu_has(X86_FEATURE_OSXSAVE));
--
2.47.0.rc0.187.ge670bccf7e-goog