From mboxrd@z Thu Jan 1 00:00:00 1970 From: Xiao Guangrong Subject: Re: [PATCH] KVM: don't sent IPI if the vcpu is not online Date: Mon, 06 Sep 2010 09:48:55 +0800 Message-ID: <4C844887.9090802@cn.fujitsu.com> References: <4C807593.1050903@cn.fujitsu.com> <4C83445B.4020103@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Cc: Marcelo Tosatti , LKML , KVM To: Avi Kivity Return-path: Received: from cn.fujitsu.com ([222.73.24.84]:51546 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1751573Ab0IFBoq (ORCPT ); Sun, 5 Sep 2010 21:44:46 -0400 In-Reply-To: <4C83445B.4020103@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: On 09/05/2010 03:18 PM, Avi Kivity wrote: > On 09/03/2010 07:12 AM, Xiao Guangrong wrote: >> It's no need sent IPI to the vcpu which is schedule out >> >> >> @@ -86,6 +86,7 @@ struct kvm_vcpu { >> unsigned long requests; >> unsigned long guest_debug; >> int srcu_idx; >> + bool online; > > Why not check for guest_mode instead? > Oh, i forget it...but 'vcpu->guest_mode' is only used in x86 platform, and make_all_cpus_request() is a common function. So, maybe it's better use 'vcpu->online' here, and move 'guest_mode' into 'vcpu->arch' ?