diff options
Diffstat (limited to 'tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c')
| -rw-r--r-- | tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c b/tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c index 95ce192d0753..c8a5c5e51661 100644 --- a/tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c +++ b/tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c @@ -48,16 +48,16 @@ do { \ static void guest_code(void) { - uint64_t xcr0_reset; + uint64_t initial_xcr0; uint64_t supported_xcr0; int i, vector; set_cr4(get_cr4() | X86_CR4_OSXSAVE); - xcr0_reset = xgetbv(0); + initial_xcr0 = xgetbv(0); supported_xcr0 = this_cpu_supported_xcr0(); - GUEST_ASSERT(xcr0_reset == XFEATURE_MASK_FP); + GUEST_ASSERT(initial_xcr0 == supported_xcr0); /* Check AVX */ ASSERT_XFEATURE_DEPENDENCIES(supported_xcr0, @@ -79,6 +79,11 @@ static void guest_code(void) ASSERT_ALL_OR_NONE_XFEATURE(supported_xcr0, XFEATURE_MASK_XTILE); + vector = xsetbv_safe(0, XFEATURE_MASK_FP); + __GUEST_ASSERT(!vector, + "Expected success on XSETBV(FP), got vector '0x%x'", + vector); + vector = xsetbv_safe(0, supported_xcr0); __GUEST_ASSERT(!vector, "Expected success on XSETBV(0x%lx), got vector '0x%x'", |