linux-kernel - Re: [PATCH 2/2] KVM: VMX: Ignore userspace MSR filters for x2APIC when APICV is enabled

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Message-ID: <5258c516-dc01-9377-1cf6-6a9ccd51d41d@redhat.com>
Date:   Mon, 19 Oct 2020 18:32:06 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Peter Xu <peterx@...hat.com>, Alexander Graf <graf@...zon.com>,
        Sean Christopherson <sean.j.christopherson@...el.com>
Cc:     Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, Aaron Lewis <aaronlewis@...gle.com>
Subject: Re: [PATCH 2/2] KVM: VMX: Ignore userspace MSR filters for x2APIC
 when APICV is enabled

On 07/10/20 18:44, Peter Xu wrote:
> If we want to forbid apicv msrs, should we even fail KVM_X86_SET_MSR_FILTER
> directly then?

Yes, probably it should.  I'll send a patch shortly.

Paolo