Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
MIME-Version: 1.0
References: <1623050385-100988-1-git-send-email-wanpengli@tencent.com>
 <1623050385-100988-2-git-send-email-wanpengli@tencent.com> <0584d79d-9f2c-52dd-5dcc-beffd18f265b@redhat.com>
In-Reply-To: <0584d79d-9f2c-52dd-5dcc-beffd18f265b@redhat.com>
From:   Wanpeng Li <kernellwp@gmail.com>
Date:   Wed, 9 Jun 2021 10:15:00 +0800
Message-ID: <CANRm+Cx3LpnMwWHAvJoTErAdWoceO9DBPqY0UkbQHW-ZUHw5=g@mail.gmail.com>
Subject: Re: [PATCH v2 2/3] KVM: LAPIC: Reset TMCCT during vCPU reset
To:     Paolo Bonzini <pbonzini@redhat.com>
Cc:     LKML <linux-kernel@vger.kernel.org>, kvm <kvm@vger.kernel.org>,
        Sean Christopherson <seanjc@google.com>,
        Vitaly Kuznetsov <vkuznets@redhat.com>,
        Wanpeng Li <wanpengli@tencent.com>,
        Jim Mattson <jmattson@google.com>,
        Joerg Roedel <joro@8bytes.org>
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk

On Wed, 9 Jun 2021 at 00:27, Paolo Bonzini <pbonzini@redhat.com> wrote:
[...]
> Perhaps instead set TMCCT to 0 in kvm_apic_set_state, instead of keeping
> the value that was filled in by KVM_GET_LAPIC?

Keeping the value that was filled in by KVM_GET_LAPIC is introduced by
commit 24647e0a39b6 (KVM: x86: Return updated timer current count
register from KVM_GET_LAPIC), could you elaborate more? :)

    Wanpeng