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Subject: Re: [PATCH v5 12/34] KVM: SVM: Add initial support for a VMGEXIT
 VMEXIT
To:     Sean Christopherson <seanjc@google.com>,
        Tom Lendacky <thomas.lendacky@amd.com>
Cc:     kvm@vger.kernel.org, linux-kernel@vger.kernel.org, x86@kernel.org,
        Jim Mattson <jmattson@google.com>,
        Joerg Roedel <joro@8bytes.org>,
        Vitaly Kuznetsov <vkuznets@redhat.com>,
        Wanpeng Li <wanpengli@tencent.com>,
        Borislav Petkov <bp@alien8.de>, Ingo Molnar <mingo@redhat.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Brijesh Singh <brijesh.singh@amd.com>
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From:   Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <35efe04e-a3df-d151-8192-b09473f81cc1@redhat.com>
Date:   Tue, 15 Dec 2020 11:16:56 +0100
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On 14/12/20 20:41, Sean Christopherson wrote:
> I agree VMGEXIT should be added to the hot path, it could very well be the most
> common exit reason due to all instruction-based emulation getting funneled
> through VMGEXIT.

Yeah, I was thinking that not many guests will be SEV-ES.  On the other 
hand, it's quite likely to have an SEV-ES guest in your hands once the 
really common non-VMGEXITs have been eliminated.

Paolo