KVM: VMX: check CPUID before allowing read/write of IA32_XSS

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Raise #GP when guest read/write IA32_XSS, but the CPUID bits
say that it shouldn't exist.

Fixes: 203000993d (kvm: vmx: add MSR logic for XSAVES)
Reported-by: Xiaoyao Li <xiaoyao.li@linux.intel.com>
Reported-by: Tao Xu <tao3.xu@intel.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Wanpeng Li 2019-06-20 17:00:02 +08:00 • committed by Paolo Bonzini

parent eceb9973d9

commit 4d763b168e

1 changed files with 8 additions and 2 deletions

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arch/x86/kvm/vmx/vmx.c

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