diff options
| author | Sean Christopherson <seanjc@google.com> | 2024-10-03 16:43:37 -0700 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2024-11-01 09:26:37 -0700 |
| commit | 89f8869835e4da836bc60ab20568b7864706f94b (patch) | |
| tree | d30732c4fc5c4f7cddb8ecea6e4bd22f146527d2 /tools/testing/selftests/kvm/x86_64/sev_smoke_test.c | |
| parent | 3c4c128d02ed81ddbf9b374a77bc0cb5a91e0a87 (diff) | |
KVM: selftests: Ensure KVM supports AVX for SEV-ES VMSA FPU test
Verify that KVM's supported XCR0 includes AVX (and earlier features) when
running the SEV-ES VMSA XSAVE test. In practice, the issue will likely
never pop up, since KVM support for AVX predates KVM support for SEV-ES,
but checking for KVM support makes the requirement more obvious.
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Link: https://lore.kernel.org/r/20241003234337.273364-12-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'tools/testing/selftests/kvm/x86_64/sev_smoke_test.c')
| -rw-r--r-- | tools/testing/selftests/kvm/x86_64/sev_smoke_test.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/tools/testing/selftests/kvm/x86_64/sev_smoke_test.c b/tools/testing/selftests/kvm/x86_64/sev_smoke_test.c index 965fc362dee3..ae77698e6e97 100644 --- a/tools/testing/selftests/kvm/x86_64/sev_smoke_test.c +++ b/tools/testing/selftests/kvm/x86_64/sev_smoke_test.c @@ -181,6 +181,8 @@ static void test_sev_es_shutdown(void) int main(int argc, char *argv[]) { + const u64 xf_mask = XFEATURE_MASK_X87_AVX; + TEST_REQUIRE(kvm_cpu_has(X86_FEATURE_SEV)); test_sev(guest_sev_code, SEV_POLICY_NO_DBG); @@ -193,7 +195,7 @@ int main(int argc, char *argv[]) test_sev_es_shutdown(); if (kvm_has_cap(KVM_CAP_XCRS) && - (xgetbv(0) & XFEATURE_MASK_X87_AVX) == XFEATURE_MASK_X87_AVX) { + (xgetbv(0) & kvm_cpu_supported_xcr0() & xf_mask) == xf_mask) { test_sync_vmsa(0); test_sync_vmsa(SEV_POLICY_NO_DBG); } |