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| author | Maxim Levitsky <mlevitsk@redhat.com> | 2022-02-07 17:54:22 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-02-08 13:30:49 -0500 |
| commit | 91f673b3e1bd99faf46472b5244cb40fdcd01078 (patch) | |
| tree | 5386c38287ee9d1d8379e6f8d341ed21f5bf53af /arch | |
| parent | 759cbd59674a6c0aec616a3f4f0740ebd3f5fbef (diff) | |
| download | linux-91f673b3e1bd99faf46472b5244cb40fdcd01078.tar.bz2 | |
KVM: x86: nSVM: expose clean bit support to the guest
KVM already honours few clean bits thus it makes sense
to let the nested guest know about it.
Note that KVM also doesn't check if the hardware supports
clean bits, and therefore nested KVM was
already setting clean bits and L0 KVM
was already honouring them.
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20220207155447.840194-6-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kvm/svm/svm.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index 2ea7985028fe..0e3521316d6b 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -4652,6 +4652,7 @@ static __init void svm_set_cpu_caps(void) /* CPUID 0x80000001 and 0x8000000A (SVM features) */ if (nested) { kvm_cpu_cap_set(X86_FEATURE_SVM); + kvm_cpu_cap_set(X86_FEATURE_VMCBCLEAN); if (nrips) kvm_cpu_cap_set(X86_FEATURE_NRIPS); |