linux-kernel - Re: [PATCH v5 0/2] x86/kvm: Reduce vcpu_is

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Date:   Tue, 21 Feb 2017 12:49:07 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Peter Zijlstra <peterz@...radead.org>,
        Waiman Long <longman@...hat.com>
Cc:     linux-arch@...r.kernel.org, Juergen Gross <jgross@...e.com>,
        Jeremy Fitzhardinge <jeremy@...p.org>, x86@...nel.org,
        kvm@...r.kernel.org,
        Radim Krčmář <rkrcmar@...hat.com>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Pan Xinhui <xinhui.pan@...ux.vnet.ibm.com>,
        linux-kernel@...r.kernel.org,
        virtualization@...ts.linux-foundation.org,
        Chris Wright <chrisw@...s-sol.org>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>, xen-devel@...ts.xenproject.org,
        Alok Kataria <akataria@...are.com>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH v5 0/2] x86/kvm: Reduce vcpu_is_preempted() overhead



On 20/02/2017 20:54, Peter Zijlstra wrote:
> On Mon, Feb 20, 2017 at 01:36:02PM -0500, Waiman Long wrote:
>> Waiman Long (2):
>>   x86/paravirt: Change vcp_is_preempted() arg type to long
>>   x86/kvm: Provide optimized version of vcpu_is_preempted() for x86-64
>>
>>  arch/x86/include/asm/paravirt.h      |  2 +-
>>  arch/x86/include/asm/qspinlock.h     |  2 +-
>>  arch/x86/kernel/asm-offsets_64.c     |  9 +++++++++
>>  arch/x86/kernel/kvm.c                | 26 +++++++++++++++++++++++++-
>>  arch/x86/kernel/paravirt-spinlocks.c |  2 +-
>>  5 files changed, 37 insertions(+), 4 deletions(-)
> 
> I'm assuming this will go through the KVM tree, if people want me to
> take it through the tip tree, please let me know.
> 
> Acked-by: Peter Zijlstra (Intel) <peterz@...raded.org>

Applied, thanks.

Paolo