linux-kernel - Re: [PATCH v8 8/8] KVM: selftests: Add test for user space MSR handling

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Date:   Mon, 28 Sep 2020 09:10:45 -0700
From:   Aaron Lewis <aaronlewis@...gle.com>
To:     Alexander Graf <graf@...zon.com>
Cc:     kvm list <kvm@...r.kernel.org>,
        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>,
        Jim Mattson <jmattson@...gle.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, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v8 8/8] KVM: selftests: Add test for user space MSR handling

On Fri, Sep 25, 2020 at 7:36 AM Alexander Graf <graf@...zon.com> wrote:
>
> Now that we have the ability to handle MSRs from user space and also to
> select which ones we do want to prevent in-kernel KVM code from handling,
> let's add a selftest to show case and verify the API.
>
> Signed-off-by: Alexander Graf <graf@...zon.com>

Reviewed-by: Aaron Lewis <aaronlewis@...gle.com>

>
> ---
>
> v2 -> v3:
>
>   - s/KVM_CAP_ADD_MSR_ALLOWLIST/KVM_CAP_X86_MSR_ALLOWLIST/g
>   - Add test to clear whitelist
>   - Adjust to reply-less API
>   - Fix asserts
>   - Actually trap on MSR_IA32_POWER_CTL writes
>
> v5 -> v6:
>
>   - Adapt to new ioctl API
>   - Check for passthrough MSRs
>   - Check for filter exit reason
>   - Add .gitignore
>