KVM: SVM: Convert feature updates from CPUID to KVM cpu caps

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Use the recently introduced KVM CPU caps to propagate SVM-only (kernel)
settings to supported CPUID flags.

Note, there are a few subtleties:

  - Setting a flag based on a *different* feature is effectively
    emulation, and must be done at runtime via ->set_supported_cpuid().

  - CPUID 0x8000000A.EDX is a feature leaf that was previously not
    adjusted by kvm_cpu_cap_mask() because all features are hidden by
    default.

Opportunistically add a technically unnecessary break and fix an
indentation issue in svm_set_supported_cpuid().

No functional change intended.

Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

...

This commit is contained in:

Sean Christopherson 2020-03-02 15:56:42 -08:00 • committed by Paolo Bonzini

parent 66a6950f99

commit 9b58b9857f

2 changed files with 36 additions and 16 deletions

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6

arch/x86/kvm/cpuid.c

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46

arch/x86/kvm/svm.c

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