From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: [PATCH 0/5] Fix some mmu/emulator atomicity issues (v2) Date: Sun, 14 Mar 2010 09:03:47 +0200 Message-ID: <4B9C8A53.8030902@redhat.com> References: <1268232631-1579-1-git-send-email-avi@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: kvm@vger.kernel.org To: Marcelo Tosatti Return-path: Received: from mx1.redhat.com ([209.132.183.28]:3686 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753482Ab0CNHDt (ORCPT ); Sun, 14 Mar 2010 03:03:49 -0400 Received: from int-mx03.intmail.prod.int.phx2.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.16]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id o2E73nZd010948 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Sun, 14 Mar 2010 03:03:49 -0400 Received: from cleopatra.tlv.redhat.com (cleopatra.tlv.redhat.com [10.35.255.11]) by int-mx03.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id o2E73mhs027183 for ; Sun, 14 Mar 2010 03:03:48 -0400 In-Reply-To: <1268232631-1579-1-git-send-email-avi@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: On 03/10/2010 04:50 PM, Avi Kivity wrote: > Currently when we emulate a locked operation into a shadowed guest page > table, we perform a write rather than a true atomic. This is indicated > by the "emulating exchange as write" message that shows up in dmesg. > > In addition, the pte prefetch operation during invlpg suffered from a > race. This was fixed by removing the operation. > > This patchset fixes both issues and reinstates pte prefetch on invlpg. > > v2: > - fix truncated description for patch 1 > - add new patch 4, which fixes a bug in patch 5 > No comments, but looks like last week's maintainer neglected to merge this. -- error compiling committee.c: too many arguments to function