From mboxrd@z Thu Jan  1 00:00:00 1970
From: Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: [PATCH] Revert "KVM: nested VMX: disable perf cpuid reporting"
Date: Wed, 21 Dec 2016 18:48:59 +0100
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On 21/12/2016 17:00, Jim Mattson wrote:
> 
> It seems likely that this was induced by an attempt to save/restore
> MSR_CORE_PERF_GLOBAL_CTRL, since L0 doesn't set the
> VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL/VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL
> bits in L1's VMX capability MSRs. (As an aside: why not?)

Because no one has ever tried, I guess.

Paolo