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Date:   Sat, 29 Aug 2020 09:49:49 +0800
From:   Chenyi Qiang <>
To:     Jim Mattson <>
Cc:     Paolo Bonzini <>,
        Sean Christopherson <>,
        Vitaly Kuznetsov <>,
        Wanpeng Li <>,
        Joerg Roedel <>,
        Xiaoyao Li <>,
        kvm list <>,
        LKML <>
Subject: Re: [PATCH 1/5] KVM: nVMX: Fix VMX controls MSRs setup when nested
 VMX enabled

On 8/29/2020 1:43 AM, Jim Mattson wrote:
> On Fri, Aug 28, 2020 at 1:54 AM Chenyi Qiang <> 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.

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