Re: [PATCH 1/5] KVM: nVMX: Fix VMX controls MSRs setup when nested VMX enabled

[Chenyi Qiang]

On 8/29/2020 1:43 AM, Jim Mattson wrote:
> On Fri, Aug 28, 2020 at 1:54 AM Chenyi Qiang <chenyi.qiang@xxxxxxxxx> wrote:
> > KVM supports the nested VM_{EXIT, ENTRY}_LOAD_IA32_PERF_GLOBAL_CTRL and
> > VM_{ENTRY_LOAD, EXIT_CLEAR}_BNDCFGS, but they doesn't expose during
> > the setup of nested VMX controls MSR.
>
> Aren't these features added conditionally in
> nested_vmx_entry_exit_ctls_update() and
> nested_vmx_pmu_entry_exit_ctls_update()?

Yes, but I assume vmcs_config.nested should reflect the global 
capability of VMX MSR. KVM supports these two controls, so should be 
exposed here.