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From:   Vitaly Kuznetsov <vkuznets@redhat.com>
To:     Sean Christopherson <seanjc@google.com>
Cc:     kvm@vger.kernel.org, Paolo Bonzini <pbonzini@redhat.com>,
        Anirudh Rayabharam <anrayabh@linux.microsoft.com>,
        Wanpeng Li <wanpengli@tencent.com>,
        Jim Mattson <jmattson@google.com>,
        Maxim Levitsky <mlevitsk@redhat.com>,
        linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 13/28] KVM: VMX: Get rid of eVMCS specific VMX
 controls sanitization
In-Reply-To: <YsYMPCr3/ig0xPFj@google.com>
References: <20220629150625.238286-1-vkuznets@redhat.com>
 <20220629150625.238286-14-vkuznets@redhat.com>
 <YsYMPCr3/ig0xPFj@google.com>
Date:   Thu, 07 Jul 2022 12:03:14 +0200
Message-ID: <87ilo9qly5.fsf@redhat.com>
MIME-Version: 1.0
Content-Type: text/plain
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Sean Christopherson <seanjc@google.com> writes:

> On Wed, Jun 29, 2022, Vitaly Kuznetsov wrote:
>> With the updated eVMCSv1 definition, there's no known 'problematic'
>> controls which are exposed in VMX control MSRs but are not present in
>> eVMCSv1. Get rid of the filtering.
>
> Ah, this patch is confusing until one realizes that this is dropping the "filtering"
> for what controls/features _KVM_ uses, whereas nested_evmcs_filter_control_msr()
> filters controls that are presented to L1.
>
> Can you add something to clarify that in the changelog?

Yea, this is for KVM-on-Hyper-V only, I'll fix the changelog.

-- 
Vitaly