diff options
| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2022-01-26 14:18:04 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-01-26 18:15:03 +0100 |
| commit | 033a3ea59a19df63edb4db6bfdbb357cd028258a (patch) | |
| tree | 9e93ea4de7eda3507d1fe7296237cde34b30d55f /arch/x86 | |
| parent | KVM: x86: Forcibly leave nested virt when SMM state is toggled (diff) | |
| download | linux-033a3ea59a19df63edb4db6bfdbb357cd028258a.tar.xz linux-033a3ea59a19df63edb4db6bfdbb357cd028258a.zip | |
KVM: x86: Check .flags in kvm_cpuid_check_equal() too
kvm_cpuid_check_equal() checks for the (full) equality of the supplied
CPUID data so .flags need to be checked too.
Reported-by: Sean Christopherson <seanjc@google.com>
Fixes: c6617c61e8fe ("KVM: x86: Partially allow KVM_SET_CPUID{,2} after KVM_RUN")
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20220126131804.2839410-1-vkuznets@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kvm/cpuid.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index 8e2704b50e47..d0c9b10d448d 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -133,6 +133,7 @@ static int kvm_cpuid_check_equal(struct kvm_vcpu *vcpu, struct kvm_cpuid_entry2 orig = &vcpu->arch.cpuid_entries[i]; if (e2[i].function != orig->function || e2[i].index != orig->index || + e2[i].flags != orig->flags || e2[i].eax != orig->eax || e2[i].ebx != orig->ebx || e2[i].ecx != orig->ecx || e2[i].edx != orig->edx) return -EINVAL; |