KVM: selftests: Check KVM's supported CPUID, not host CPUID, for XFD

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Use kvm_cpu_has() to check for XFD supported in vm_xsave_req_perm(),
simply checking host CPUID doesn't guarantee KVM supports AMX/XFD.

Opportunistically hoist the check above the bit check; if XFD isn't
supported, it's far better to get a "not supported at all" message, as
opposed to a "feature X isn't supported" message".

Signed-off-by: Sean Christopherson <seanjc@google.com>
Link: https://lore.kernel.org/r/20220614200707.3315957-39-seanjc@google.com

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This commit is contained in:

Sean Christopherson 2022-06-14 20:07:03 +00:00

parent d04019274d

commit 7fbb653e01

2 changed files with 3 additions and 17 deletions

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1

tools/testing/selftests/kvm/include/x86_64/processor.h

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19

tools/testing/selftests/kvm/lib/x86_64/processor.c

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