Re: [sos-linux-ext-patches] [PATCH v4 2/8] KVM: selftests: SEV-SNP test for KVM_SEV_INIT2

Nikunj A. Dadhania
2025-01-10T06:07:22Z

On 1/10/2025 11:22 AM, Nikunj A. Dadhania wrote:
>
>
> On 11/15/2024 5:10 AM, Pratik R. Sampat wrote:
>> Add the X86_FEATURE_SNP CPU feature to the architectural definition for
>> the SEV-SNP VM type to exercise the KVM_SEV_INIT2 call. Ensure that the
>> SNP test is skipped in scenarios where CPUID supports it but KVM does
>> not, so that a failure is not reported in such cases.
>>
>> Signed-off-by: Pratik R. Sampat <pratikrajesh.sampat@amd.com>
>> ---
>> .../selftests/kvm/include/x86_64/processor.h | 1 +
>> .../testing/selftests/kvm/x86_64/sev_init2_tests.c | 13 +++++++++++++
>> 2 files changed, 14 insertions(+)
>>
>> diff --git a/tools/testing/selftests/kvm/include/x86_64/processor.h b/tools/testing/selftests/kvm/include/x86_64/processor.h
>> index 645200e95f89..c18d2405798f 100644
>> --- a/tools/testing/selftests/kvm/include/x86_64/processor.h
>> +++ b/tools/testing/selftests/kvm/include/x86_64/processor.h
>> @@ -199,6 +199,7 @@ struct kvm_x86_cpu_feature {
>> #define X86_FEATURE_VGIF KVM_X86_CPU_FEATURE(0x8000000A, 0, EDX, 16)
>> #define X86_FEATURE_SEV KVM_X86_CPU_FEATURE(0x8000001F, 0, EAX, 1)
>
> Unrelated to your patch, X86_FEATURE_SEV does not match the KVM API definitions,
> 1 is used for KVM_X86_SW_PROTECTED_VM

Scratch that, I got confused between the KVM API definition and CPUID naming.

Regards
Nikunj