From mboxrd@z Thu Jan 1 00:00:00 1970 From: Xiao Guangrong Subject: Re: KVM: MMU: make kvm_mmu_available_pages robust against n_used_mmu_pages > n_max_mmu_pages Date: Wed, 13 Mar 2013 13:17:11 +0800 Message-ID: <51400BD7.9000503@linux.vnet.ibm.com> References: <20130313013642.GA20722@amt.cnet> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Cc: kvm , Gleb Natapov , Paolo Bonzini , Ulrich Obergfell To: Marcelo Tosatti Return-path: Received: from e23smtp07.au.ibm.com ([202.81.31.140]:49938 "EHLO e23smtp07.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751333Ab3CMFR0 (ORCPT ); Wed, 13 Mar 2013 01:17:26 -0400 Received: from /spool/local by e23smtp07.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 13 Mar 2013 15:09:19 +1000 Received: from d23relay03.au.ibm.com (d23relay03.au.ibm.com [9.190.235.21]) by d23dlp02.au.ibm.com (Postfix) with ESMTP id 2BFB22BB0050 for ; Wed, 13 Mar 2013 16:17:15 +1100 (EST) Received: from d23av02.au.ibm.com (d23av02.au.ibm.com [9.190.235.138]) by d23relay03.au.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r2D5HBX37995664 for ; Wed, 13 Mar 2013 16:17:11 +1100 Received: from d23av02.au.ibm.com (loopback [127.0.0.1]) by d23av02.au.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id r2D5HEAq000417 for ; Wed, 13 Mar 2013 16:17:14 +1100 In-Reply-To: <20130313013642.GA20722@amt.cnet> Sender: kvm-owner@vger.kernel.org List-ID: On 03/13/2013 09:36 AM, Marcelo Tosatti wrote: > > As noticed by Ulrich Obergfell , the mmu > counters are for beancounting purposes only - so n_used_mmu_pages and > n_max_mmu_pages could be relaxed (example: before f0f5933a1626c8df7b), > resulting in n_used_mmu_pages > n_max_mmu_pages. > Interesting. > Make code robust against n_used_mmu_pages > n_max_mmu_pages. Reviewed-by: Xiao Guangrong