diff options
| author | Nadav Amit <namit@cs.technion.ac.il> | 2014-09-18 22:39:44 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2014-09-24 14:07:52 +0200 |
| commit | 4566654bb9be9e8864df417bb72ceee5136b6a6a (patch) | |
| tree | 2ee30a47fda49fb967dbad7ce7c0158f6e1023e4 /arch/x86/kvm/vmx.c | |
| parent | 040c8dc8a5afa7364bb8bb5b1b76c30007d6be14 (diff) | |
KVM: vmx: Inject #GP on invalid PAT CR
Guest which sets the PAT CR to invalid value should get a #GP. Currently, if
vmx supports loading PAT CR during entry, then the value is not checked. This
patch makes the required check in that case.
Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/vmx.c')
| -rw-r--r-- | arch/x86/kvm/vmx.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index ec389a6dc82a..06746c0a3c70 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -2626,6 +2626,8 @@ static int vmx_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info) break; case MSR_IA32_CR_PAT: if (vmcs_config.vmentry_ctrl & VM_ENTRY_LOAD_IA32_PAT) { + if (!kvm_mtrr_valid(vcpu, MSR_IA32_CR_PAT, data)) + return 1; vmcs_write64(GUEST_IA32_PAT, data); vcpu->arch.pat = data; break; |