Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754640AbaLIXQ2 (ORCPT ); Tue, 9 Dec 2014 18:16:28 -0500 Received: from mail-ie0-f169.google.com ([209.85.223.169]:64383 "EHLO mail-ie0-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753808AbaLIXQ0 convert rfc822-to-8bit (ORCPT ); Tue, 9 Dec 2014 18:16:26 -0500 MIME-Version: 1.0 In-Reply-To: <54877495.9090102@gmail.com> References: <1418075552-26495-1-git-send-email-yinghai@kernel.org> <1418079372.13358.9.camel@kernel.crashing.org> <20141209001119.GA24661@shangw> <20141209022601.GA16207@richard> <54873A45.3050009@gmail.com> <54877495.9090102@gmail.com> Date: Tue, 9 Dec 2014 15:16:25 -0800 X-Google-Sender-Auth: NMdVZ75Vdn_ol65GYudxPNZ5coo Message-ID: Subject: Re: [PATCH] PCI: Clear bridge MEM_64 flag if one child does not support it From: Yinghai Lu To: =?UTF-8?Q?Marek_Kord=C3=ADk?= Cc: Bjorn Helgaas , Wei Yang , Alexey Voronkov , Gavin Shan , Benjamin Herrenschmidt , "linux-pci@vger.kernel.org" , Linux Kernel Mailing List Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Dec 9, 2014 at 2:15 PM, Marek Kordík wrote: > On 12/09/2014 08:42 PM, Yinghai Lu wrote: >> >> On Tue, Dec 9, 2014 at 10:22 AM, Bjorn Helgaas >> wrote: >>> >>> On Tue, Dec 9, 2014 at 11:07 AM, Marek Kordík >>> wrote: >>>> >>>> I have built and booted your branch and it works well. Do you want me to >>>> attach some logs? >>>> (I am new here and I have read http://www.tux.org/lkml/ and I don't want >> >> Can you run some graphics benchmark program to check the performance >> between >> 1. >> >> git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-yinghai.git >> branch: for-pci-allocate-fit-3.18 >> >> 2. >> v 3.18 + clear mmio64 flags when children device does not support it >> >> > I have run Unigine Heaven benchmark on both versions (I tried version 2. > with and also without kernel parameters "debug ignore_loglevel pci=realloc") > and the performance of each version was the same (70-71 points). I tried to > run this benchmark also with kernel 3.15.10 and the result was 67 points. > Tomorrow I can try to run some more benchmarks, today I didn't have much > time. so putting mem pref under bridge mem does not cause performance loss? Thanks Yinghai -- 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/