Messages in this thread | | | Subject | Re: [PATCH] KVM: nVMX: Fix nested bus lock VM exit | From | Xiaoyao Li <> | Date | Fri, 27 Aug 2021 19:13:48 +0800 |
| |
On 8/27/2021 4:51 PM, Chenyi Qiang wrote: > Nested bus lock VM exits are not supported yet. If L2 triggers bus lock > VM exit, it will be directed to L1 VMM, which would cause unexpected > behavior. Therefore, handle L2's bus lock VM exits in L0 directly. > > Fixes: fe6b6bc802b4 ("KVM: VMX: Enable bus lock VM exit") > Signed-off-by: Chenyi Qiang <chenyi.qiang@intel.com> > --- > arch/x86/kvm/vmx/nested.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c > index bc6327950657..754f53cf0f7a 100644 > --- a/arch/x86/kvm/vmx/nested.c > +++ b/arch/x86/kvm/vmx/nested.c > @@ -5873,6 +5873,8 @@ static bool nested_vmx_l0_wants_exit(struct kvm_vcpu *vcpu, > case EXIT_REASON_VMFUNC: > /* VM functions are emulated through L2->L0 vmexits. */ > return true; > + case EXIT_REASON_BUS_LOCK: > + return true; > default: > break; > } > Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
| |