From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261682AbUEAL6x (ORCPT ); Sat, 1 May 2004 07:58:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261685AbUEAL6x (ORCPT ); Sat, 1 May 2004 07:58:53 -0400 Received: from pop.gmx.net ([213.165.64.20]:37609 "HELO mail.gmx.net") by vger.kernel.org with SMTP id S261682AbUEAL6w (ORCPT ); Sat, 1 May 2004 07:58:52 -0400 X-Authenticated: #4512188 Message-ID: <409390F8.2010007@gmx.de> Date: Sat, 01 May 2004 13:58:48 +0200 From: "Prakash K. Cheemplavam" User-Agent: Mozilla Thunderbird 0.5 (X11/20040413) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Andrew Morton CC: CaT , B.Zolnierkiewicz@elka.pw.edu.pl, linux-kernel@vger.kernel.org, jgarzik@pobox.com Subject: Re: libata + siI3112 + 2.6.5-rc3 hang References: <20040429234258.GA6145@zip.com.au> <200404300208.32830.bzolnier@elka.pw.edu.pl> <20040430093919.GA2109@zip.com.au> <200404301800.08763.bzolnier@elka.pw.edu.pl> <20040501030828.GE2109@zip.com.au> <20040430222157.17f5db82.akpm@osdl.org> In-Reply-To: <20040430222157.17f5db82.akpm@osdl.org> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Andrew Morton wrote: > CaT wrote: > >>Here's the patch that Joe sent me. It doesn't apply cleanly mainly due >> to formatting errors in the patch but a bit of manual fixerupping made >> it all apply. >> >> --- 8< --- >> --- linux-2.6.4-orig/arch/i386/pci/fixup.c 2004-03-11 >> 03:55:36.000000000 +0100 >> +++ linux-2.6.4/arch/i386/pci/fixup.c 2004-03-16 13:12:25.706569480 +0100 >> @@ -187,6 +187,22 @@ >> dev->transparent = 1; >> } >> >> +/* >> + * Halt Disconnect and Stop Grant Disconnect (bit 4 at offset 0x6F) >> + * must be disabled when APIC is used (or lockups will happen). >> + */ > > > I had this in -mm for a while. Ended up dropping it because it made some > people's CPUs run warmer and because it "wasn't the right fix". > > Does anyone know what the right fix is? If not, it seems that a warm CPU > is better than a non-functional box. Maybe enable it via a boot option? Ross' C1halt idle patch is the right thing to take. No fix, but stable work-around. Prakash