From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marcelo Tosatti <mtosatti@redhat.com>
Subject: Re: [PATCH] No need to kick cpu if not in a guest mode.
Date: Tue, 7 Jul 2009 11:56:02 -0300
Message-ID: <20090707145602.GA3797@amt.cnet>
References: <20090707122732.GG28046@redhat.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Cc: avi@redhat.com, kvm@vger.kernel.org
To: Gleb Natapov <gleb@redhat.com>
Return-path: <kvm-owner@vger.kernel.org>
Received: from mx2.redhat.com ([66.187.237.31]:38742 "EHLO mx2.redhat.com"
	rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
	id S1758334AbZGGO4U (ORCPT <rfc822;kvm@vger.kernel.org>);
	Tue, 7 Jul 2009 10:56:20 -0400
Received: from int-mx2.corp.redhat.com (int-mx2.corp.redhat.com [172.16.27.26])
	by mx2.redhat.com (8.13.8/8.13.8) with ESMTP id n67EuK0p025737
	for <kvm@vger.kernel.org>; Tue, 7 Jul 2009 10:56:20 -0400
Content-Disposition: inline
In-Reply-To: <20090707122732.GG28046@redhat.com>
Sender: kvm-owner@vger.kernel.org
List-ID: <kvm.vger.kernel.org>

ACK

On Tue, Jul 07, 2009 at 03:27:32PM +0300, Gleb Natapov wrote:
> This will save a couple of IPIs.
> 
> Signed-off-by: Gleb Natapov <gleb@redhat.com>
> diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
> index efb0b68..1e30400 100644
> --- a/arch/x86/kvm/x86.c
> +++ b/arch/x86/kvm/x86.c
> @@ -3498,6 +3498,7 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
>  	smp_mb__after_clear_bit();
>  
>  	if (vcpu->requests || need_resched() || signal_pending(current)) {
> +		set_bit(KVM_REQ_KICK, &vcpu->requests);
>  		local_irq_enable();
>  		preempt_enable();
>  		r = 1;
> --
> 			Gleb.