linux-kernel - Re: [PATCH v4 5/7] KVM: VMX: Optimize posted-interrupt delivery for timer fastpath

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Message-ID: <CANRm+Cz_nxVXmBoHU6NQGRGKbK+MWtZ476376AMJtoWvH=Kbgw@mail.gmail.com>
Date:   Fri, 1 May 2020 07:43:40 +0800
From:   Wanpeng Li <kernellwp@...il.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     LKML <linux-kernel@...r.kernel.org>, kvm <kvm@...r.kernel.org>,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>,
        Haiwei Li <lihaiwei@...cent.com>
Subject: Re: [PATCH v4 5/7] KVM: VMX: Optimize posted-interrupt delivery for
 timer fastpath

On Thu, 30 Apr 2020 at 21:32, Paolo Bonzini <pbonzini@...hat.com> wrote:
>
> On 28/04/20 08:23, Wanpeng Li wrote:
> > -     if (exit_fastpath == EXIT_FASTPATH_REENTER_GUEST &&
> > -         kvm_vcpu_exit_request(vcpu))
> > -             exit_fastpath = EXIT_FASTPATH_NOP;
> > +     if (exit_fastpath == EXIT_FASTPATH_REENTER_GUEST) {
> > +             if (!kvm_vcpu_exit_request(vcpu))
> > +                     vmx_sync_pir_to_irr(vcpu);
> > +             else
> > +                     exit_fastpath = EXIT_FASTPATH_NOP;
> > +     }
>
> This part should be in patch 3; not a big deal, I can reorganize that
> myself.

Great, thanks.

    Wanpeng