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KVM: nVMX: fail on invalid vmclear/vmptrld pointer

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The spec mandates that if the vmptrld or vmclear
address is equal to the vmxon region pointer, the
instruction should fail with error "VMPTRLD with
VMXON pointer" or "VMCLEAR with VMXON pointer"

Signed-off-by: Bandan Das <bsd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Bandan Das 2014-05-06 02:19:17 -04:00 committed by Paolo Bonzini
parent 3573e22cfe
commit 96ec146330
1 changed files with 12 additions and 0 deletions
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12
arch/x86/kvm/vmx.c
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@ -6100,6 +6100,12 @@ static int handle_vmclear(struct kvm_vcpu *vcpu)
return 1;
}
if (vmptr == vmx->nested.vmxon_ptr) {
nested_vmx_failValid(vcpu, VMXERR_VMCLEAR_VMXON_POINTER);
skip_emulated_instruction(vcpu);
return 1;
}
if (vmptr == vmx->nested.current_vmptr) {
nested_release_vmcs12(vmx);
vmx->nested.current_vmptr = -1ull;
@ -6443,6 +6449,12 @@ static int handle_vmptrld(struct kvm_vcpu *vcpu)
return 1;
}
if (vmptr == vmx->nested.vmxon_ptr) {
nested_vmx_failValid(vcpu, VMXERR_VMCLEAR_VMXON_POINTER);
skip_emulated_instruction(vcpu);
return 1;
}
if (vmx->nested.current_vmptr != vmptr) {
struct vmcs12 *new_vmcs12;
struct page *page;