Hi Tom,
On 7/11/2024 10:56 AM, Tom Lendacky wrote:
> On 7/10/24 17:05, Pratik R. Sampat wrote:
>> Extend sev_smoke_test to also run a minimal SEV-SNP smoke test that
>> initializes and sets up private memory regions required to run a simple
>> SEV-SNP guest.
>>
>> Similar to it's SEV-ES smoke test counterpart, this also does not support
>> GHCB and ucall yet and uses the GHCB MSR protocol to trigger an exit of
>> the type KVM_EXIT_SYSTEM_EVENT.
>>
>> Also, decouple policy and type and require functions to provide both
>> such that there is no assumption regarding the type using policy.
>>
>> Signed-off-by: Pratik R. Sampat <pratikrajesh.sampat@xxxxxxx>
>> ---
>> .../selftests/kvm/include/x86_64/processor.h | 1 +
>> .../selftests/kvm/include/x86_64/sev.h | 29 ++++++++
>> tools/testing/selftests/kvm/lib/kvm_util.c | 7 +-
>> .../selftests/kvm/lib/x86_64/processor.c | 6 +-
>> tools/testing/selftests/kvm/lib/x86_64/sev.c | 70 ++++++++++++++++++-
>> .../selftests/kvm/x86_64/sev_smoke_test.c | 51 ++++++++++----
>> 6 files changed, 146 insertions(+), 18 deletions(-)
>>
>> diff --git a/tools/testing/selftests/kvm/include/x86_64/processor.h b/tools/testing/selftests/kvm/include/x86_64/processor.h
>> index 8eb57de0b587..5683fc9794e4 100644
>> --- a/tools/testing/selftests/kvm/include/x86_64/processor.h
>> +++ b/tools/testing/selftests/kvm/include/x86_64/processor.h
>
>> +
>> + if (kvm_cpu_has(X86_FEATURE_SNP) && is_kvm_snp_supported()) {
>> + test_sev(guest_snp_code, KVM_X86_SNP_VM, SNP_POLICY_SMT | SNP_POLICY_RSVD_MBO);
>> + /* Test minimum firmware level */
>> + test_sev(guest_snp_code, KVM_X86_SNP_VM,
>> + SNP_POLICY_SMT | SNP_POLICY_RSVD_MBO |
>> + (SNP_FW_REQ_VER_MAJOR * SNP_POLICY_ABI_MAJOR) |
>> + (SNP_FW_REQ_VER_MINOR * SNP_POLICY_ABI_MINOR));
>
> This seems an odd way of setting these fields. Maybe, instead, use a
> couple of macros that take the values and shift appropriately and ensure
> that they don't exceed the 8-bits each field occupies.
>
Sure, I will clean this up and ensure the flags are set up more elegantly.
> Thanks,
> Tom
>
>>
