Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764608AbXJZWje (ORCPT ); Fri, 26 Oct 2007 18:39:34 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753849AbXJZWj1 (ORCPT ); Fri, 26 Oct 2007 18:39:27 -0400 Received: from www.tglx.de ([62.245.132.106]:57259 "EHLO www.tglx.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753477AbXJZWj0 (ORCPT ); Fri, 26 Oct 2007 18:39:26 -0400 Date: Sat, 27 Oct 2007 00:37:37 +0200 (CEST) From: Thomas Gleixner To: Hiroshi Shimamoto cc: vgoyal@in.ibm.com, hbabu@us.ibm.com, LKML , kexec@lists.infradead.org, Venkatesch Pallipadi Subject: Re: [PATCH 0/3] x86: unify crash_32/64.c In-Reply-To: <47225F6C.5000708@ct.jp.nec.com> Message-ID: References: <47195763.1090803@ct.jp.nec.com> <20071024063434.GC4622@in.ibm.com> <471F72AD.8030902@ct.jp.nec.com> <4720D933.3080703@ct.jp.nec.com> <47225F6C.5000708@ct.jp.nec.com> 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 Content-Length: 1276 Lines: 37 On Fri, 26 Oct 2007, Hiroshi Shimamoto wrote: Added Venki to CC > > I'm now testing crash on 32bit, but there is an issue before > > applying the patches. My machine stopped at checking 'hlt' > > after kexec, showing below message. > > > > CPU: Intel(R) Xeon(TM) CPU 3.80GHz stepping 0a > > Checking 'hlt' instruction... > > > v2.6.23.1 works fine for 1st kernel. > > I'm investigating it.. > > I found that the following patch makes my machine stopped. > bfe0c1cc6456bba1f4e3cc1fe29c0ea578ac763a > x86: HPET force enable for ICH5 > > It means that after applied this patch, HPET is enabled > automatically on 1st kernel and after crash/kexec the 2nd > kernel stopped at checking 'hlt'. > > I also tested the latest kernel(2.6.24-rc1-gec3b67c1). > Boot parameter "nohpet" resolves this issue and kdump > works well on 32bit. > So I guess HPET affects this. > But I don't know why 64bit kernel with HPET is OK. Hmm. Does the 64 bit code shutdown HPET and restore the IRQ routing to PIT and 32 bit is missing this ? tglx - 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/