Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751230AbZAFSvy (ORCPT ); Tue, 6 Jan 2009 13:51:54 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752213AbZAFSvn (ORCPT ); Tue, 6 Jan 2009 13:51:43 -0500 Received: from terminus.zytor.com ([198.137.202.10]:51573 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751477AbZAFSvn (ORCPT ); Tue, 6 Jan 2009 13:51:43 -0500 Message-ID: <4963A859.6030406@zytor.com> Date: Tue, 06 Jan 2009 10:52:09 -0800 From: "H. Peter Anvin" User-Agent: Thunderbird 2.0.0.18 (X11/20081119) MIME-Version: 1.0 To: Alexey Fisher CC: kernel-testers-owner@vger.kernel.org, linux-kernel@vger.kernel.org, Suresh Siddha , Venkatesh Pallipadi Subject: Re: [regression] glx performance drop with: "x86: PAT: implement track/untrack of pfnmap regions for x86 - v3" References: <4963A71C.2020107@fisher-privat.net> In-Reply-To: <4963A71C.2020107@fisher-privat.net> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 672 Lines: 19 Alexey Fisher wrote: > glx perfomance regression after this patch. > goot kernel: glxgears = 1400 fps > bad kernel: glxgears = 300 fps ( same speed with disabled drm module ) > > kernel log: > glxgears:5775 map pfn expected mapping type write-back for > d1000000-d1c80000, got uncached-minus > glxgears:5775 freeing invalid memtype d1000000-d1c80000 > Have we caught a case of actual overlap, i.e. a driver bug here? -hpa -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/