From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754338Ab2IXE7m (ORCPT ); Mon, 24 Sep 2012 00:59:42 -0400 Received: from e28smtp05.in.ibm.com ([122.248.162.5]:57297 "EHLO e28smtp05.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752587Ab2IXE7l (ORCPT ); Mon, 24 Sep 2012 00:59:41 -0400 Message-ID: <505FE8B4.8030309@linux.vnet.ibm.com> Date: Mon, 24 Sep 2012 12:59:32 +0800 From: Xiao Guangrong User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:15.0) Gecko/20120827 Thunderbird/15.0 MIME-Version: 1.0 To: Gleb Natapov CC: Avi Kivity , Marcelo Tosatti , LKML , KVM Subject: Re: [PATCH v3 1/7] KVM: MMU: fix release noslot pfn References: <505C0FA8.5070007@linux.vnet.ibm.com> <505C0FCF.2070308@linux.vnet.ibm.com> <20120923091335.GA20907@redhat.com> In-Reply-To: <20120923091335.GA20907@redhat.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit x-cbid: 12092404-8256-0000-0000-0000044BA2E8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 09/23/2012 05:13 PM, Gleb Natapov wrote: > On Fri, Sep 21, 2012 at 02:57:19PM +0800, Xiao Guangrong wrote: >> We can not directly call kvm_release_pfn_clean to release the pfn >> since we can meet noslot pfn which is used to cache mmio info into >> spte >> > Wouldn't it be better to move the check into kvm_release_pfn_clean()? I think there is no reason for us to prefer to adding this branch in the common code. :)