KVM: nSVM: Use KVM-governed feature framework to track "vNMI enabled"

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Track "virtual NMI exposed to L1" via a governed feature flag instead of
using a dedicated bit/flag in vcpu_svm.

Note, checking KVM's capabilities instead of the "vnmi" param means that
the code isn't strictly equivalent, as vnmi_enabled could have been set
if nested=false where as that the governed feature cannot.  But that's a
glorified nop as the feature/flag is consumed only by paths that are
gated by nSVM being enabled.

Link: https://lore.kernel.org/r/20230815203653.519297-15-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

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This commit is contained in:

Sean Christopherson 2023-08-15 13:36:52 -07:00

parent b89456aee7

commit ee785c870d

3 changed files with 3 additions and 6 deletions

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1

arch/x86/kvm/governed_features.h

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3

arch/x86/kvm/svm/svm.c

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5

arch/x86/kvm/svm/svm.h

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