linux-kernel - Re: [RFC PATCH v3 53/59] KVM: x86: Add a helper function to restore 4 host MSRs on exit to user space

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Message-ID: <7693d3a8-fea7-fb61-b3fb-d0bf8a89c57b@redhat.com>
Date:   Fri, 26 Nov 2021 10:40:16 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Chao Gao <chao.gao@...el.com>, Thomas Gleixner <tglx@...utronix.de>
Cc:     isaku.yamahata@...el.com, Ingo Molnar <mingo@...hat.com>,
        Borislav Petkov <bp@...en8.de>,
        "H . Peter Anvin" <hpa@...or.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>, erdemaktas@...gle.com,
        Connor Kuehl <ckuehl@...hat.com>,
        Sean Christopherson <seanjc@...gle.com>,
        linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        isaku.yamahata@...il.com
Subject: Re: [RFC PATCH v3 53/59] KVM: x86: Add a helper function to restore 4
 host MSRs on exit to user space

On 11/26/21 10:19, Chao Gao wrote:
> Of course. Will remove all "later patch" phrases.

Chao, see my comment on patch 54, for how to do this.  In this case, 
this patch would be right before the one that enables KVM_RUN on a TDX 
module.

Paolo