KVM: VMX: enable X86_FEATURE_WAITPKG in KVM capabilities

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Even though we might not allow the guest to use WAITPKG's new
instructions, we should tell KVM that the feature is supported by the
host CPU.

Note that vmx_waitpkg_supported checks that WAITPKG _can_ be set in
secondary execution controls as specified by VMX capability MSR, rather
that we actually enable it for a guest.

Cc: stable@vger.kernel.org
Fixes: e69e72faa3 ("KVM: x86: Add support for user wait instructions")
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20200523161455.3940-2-mlevitsk@redhat.com>
Reviewed-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Maxim Levitsky 2020-05-23 19:14:54 +03:00 • committed by Paolo Bonzini

parent 6129ed877d

commit 0abcc8f65c

1 changed files with 3 additions and 0 deletions

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arch/x86/kvm/vmx/vmx.c

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