linux-kernel - Re: [PATCH v8 1/8] KVM: x86: Return -ENOENT on unimplemented MSRs

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Message-ID: <CALMp9eSDH1F70i=-3wrC55ipz91qygrsPtw7RL4iCi09A-Da6A@mail.gmail.com>
Date:   Fri, 25 Sep 2020 09:40:08 -0700
From:   Jim Mattson <jmattson@...gle.com>
To:     Alexander Graf <graf@...zon.com>
Cc:     kvm list <kvm@...r.kernel.org>,
        Aaron Lewis <aaronlewis@...gle.com>,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Jonathan Corbet <corbet@....net>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Joerg Roedel <joro@...tes.org>,
        KarimAllah Raslan <karahmed@...zon.de>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Maxim Levitsky <mlevitsk@...hat.com>,
        linux-doc@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v8 1/8] KVM: x86: Return -ENOENT on unimplemented MSRs

On Fri, Sep 25, 2020 at 7:34 AM Alexander Graf <graf@...zon.com> wrote:
>
> When we find an MSR that we can not handle, bubble up that error code as
> MSR error return code. Follow up patches will use that to expose the fact
> that an MSR is not handled by KVM to user space.
>
> Suggested-by: Aaron Lewis <aaronlewis@...gle.com>
> Signed-off-by: Alexander Graf <graf@...zon.com>
Reviewed-by: Jim Mattson <jmattson@...gle.com>