linux-kernel - Re: [PATCH v2 0/7] KVM: VMX: PT (processor trace) optimization cleanup and fixes

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Message-ID: <166e2d66-1c16-29d4-3275-517310043ae0@redhat.com>
Date:   Tue, 19 Oct 2021 18:52:18 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Xiaoyao Li <xiaoyao.li@...el.com>
Cc:     Sean Christopherson <seanjc@...gle.com>,
        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
Subject: Re: [PATCH v2 0/7] KVM: VMX: PT (processor trace) optimization
 cleanup and fixes

On 27/08/21 09:02, Xiaoyao Li wrote:
> Patch 1-3 are optimization and cleanup.
> 
> Patch 4-7 are fixes for PT. Patch 4 and 5 fix the virtulazation of PT to
> provide architectual consistent behavior for guest. Patch 6 fix the case
> that malicious userspace can exploit PT to cause vm-entry failure or #GP
> in KVM. Patch 7 fix the potential MSR access #GP if some PT MSRs not
> available on hardware.
> 
> Patch 3 and patch 7 are added in v2.

Queued patches 1-4, thanks.

Paolo