On Wed, Apr 24, 2019 at 07:17:17PM -0400, Krish Sadhukhan wrote: > Signed-off-by: Krish Sadhukhan <krish.sadhukhan@xxxxxxxxxx> > Reviewed-by: Karl Heubaum <karl.heubaum@xxxxxxxxxx> > --- > arch/x86/kvm/vmx/nested.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c > index 3170e291215d..42a4deb662c6 100644 > --- a/arch/x86/kvm/vmx/nested.c > +++ b/arch/x86/kvm/vmx/nested.c > @@ -5493,7 +5493,8 @@ void nested_vmx_setup_ctls_msrs(struct nested_vmx_msrs *msrs, u32 ept_caps, > msrs->exit_ctls_high |= > VM_EXIT_ALWAYSON_WITHOUT_TRUE_MSR | > VM_EXIT_LOAD_IA32_EFER | VM_EXIT_SAVE_IA32_EFER | > - VM_EXIT_SAVE_VMX_PREEMPTION_TIMER | VM_EXIT_ACK_INTR_ON_EXIT; > + VM_EXIT_SAVE_VMX_PREEMPTION_TIMER | VM_EXIT_ACK_INTR_ON_EXIT | > + VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL; This exposes the control to L1 but doesn't implement the backing functionality. The backing functionality, consistency checks and exposure to L1 should be a single patch. The consistency checks could be added earlier, but I don't see much value in doing so given that the checks are (currently) a few lines. > > /* We support free control of debug control saving. */ > msrs->exit_ctls_low &= ~VM_EXIT_SAVE_DEBUG_CONTROLS; > -- > 2.17.2 >
