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Date: Thu, 21 May 2020 10:24:22 +0200 From: Paolo Bonzini <pbonzini@...hat.com> To: Xiaoyao Li <xiaoyao.li@...el.com>, Maxim Levitsky <mlevitsk@...hat.com>, kvm@...r.kernel.org, Tao Xu <tao3.xu@...el.com> Cc: linux-kernel@...r.kernel.org Subject: Re: [PATCH 2/2] kvm/x86: don't expose MSR_IA32_UMWAIT_CONTROL unconditionally On 21/05/20 06:33, Xiaoyao Li wrote: > I remember there is certainly some reason why we don't expose WAITPKG to > guest by default. That's a userspace policy decision. KVM_GET_SUPPORTED_CPUID should still tell userspace that it's supported. Paolo > Tao, please help clarify it.
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