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

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Track "virtual GIF 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 "vgif" param means that
the code isn't strictly equivalent, as vgif_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

Link: https://lore.kernel.org/r/20230815203653.519297-14-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 13:36:51 -07:00

parent 59d67fc1f0

commit b89456aee7

4 changed files with 7 additions and 5 deletions

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1

arch/x86/kvm/governed_features.h

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3

arch/x86/kvm/svm/nested.c

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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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