From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264983AbUEYRPY (ORCPT ); Tue, 25 May 2004 13:15:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264986AbUEYRPX (ORCPT ); Tue, 25 May 2004 13:15:23 -0400 Received: from zero.aec.at ([193.170.194.10]:50693 "EHLO zero.aec.at") by vger.kernel.org with ESMTP id S264980AbUEYROi (ORCPT ); Tue, 25 May 2004 13:14:38 -0400 To: Marcelo Tosatti cc: linux-kernel@vger.kernel.org Subject: Re: [BK PATCH] PCI Express patches for 2.4.27-pre3 References: <1ZuS0-1b4-15@gated-at.bofh.it> <1ZE52-8sy-15@gated-at.bofh.it> <1ZFaF-10N-13@gated-at.bofh.it> <1ZIrV-3xS-7@gated-at.bofh.it> <1ZJHt-4At-33@gated-at.bofh.it> <1ZLpV-5YK-37@gated-at.bofh.it> <1ZNBb-7QA-1@gated-at.bofh.it> From: Andi Kleen Date: Tue, 25 May 2004 19:14:34 +0200 In-Reply-To: <1ZNBb-7QA-1@gated-at.bofh.it> (Marcelo Tosatti's message of "Tue, 25 May 2004 19:10:05 +0200") Message-ID: User-Agent: Gnus/5.110003 (No Gnus v0.3) Emacs/21.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Marcelo Tosatti writes: > > Yeap, I would prefer not to apply them at this time. For one, Arjan told > me privately it can break XFree86 which accesses the PCI config space directly. > Right? Erm,no. In fact it could even fix XFree86 for that, because the way they do it currently in user space is racy and the kernel doing it differently would fix that race. But I would still recommend to not apply it, since it is somewhat risky e.g. for triggering new hardware bugs and it is not really needed and would dilute the message of freeze %) XFree86 should be fixed in user space to use the proper access methods provided by the kernel (/proc/sys etc.) -Andi