Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964943AbWLULju (ORCPT ); Thu, 21 Dec 2006 06:39:50 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S964967AbWLULjt (ORCPT ); Thu, 21 Dec 2006 06:39:49 -0500 Received: from e2.ny.us.ibm.com ([32.97.182.142]:37650 "EHLO e2.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964956AbWLULjs (ORCPT ); Thu, 21 Dec 2006 06:39:48 -0500 Date: Thu, 21 Dec 2006 06:38:14 +0530 From: Vivek Goyal To: "Eric W. Biederman" Cc: Jean Delvare , Andi Kleen , LKML Subject: Re: Patch "i386: Relocatable kernel support" causes instant reboot Message-ID: <20061221010814.GA30299@in.ibm.com> Reply-To: vgoyal@in.ibm.com References: <20061220141808.e4b8c0ea.khali@linux-fr.org> <20061220214340.f6b037b1.khali@linux-fr.org> <20061221101240.f7e8f107.khali@linux-fr.org> <20061221102232.5a10bece.khali@linux-fr.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.11 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2918 Lines: 80 On Thu, Dec 21, 2006 at 03:32:33AM -0700, Eric W. Biederman wrote: > Jean Delvare writes: > > > On Thu, 21 Dec 2006 10:12:40 +0100, Jean Delvare wrote: > >> On Wed, 20 Dec 2006 15:22:20 -0700, Eric W. Biederman wrote: > >> > Ok. Here is a small diff that inserts the infinite loops, between > >> > each section of code in head.S Procedurally please trying booting > >> > this unmodified and see if it boots, then remove the infinite loop > >> > until you come to the one where the system reboots instead of hangs. > >> > > >> > That should at least give me a good idea of where to look. > >> > If 20 hangs and 21 still reboots we are into misc.c and the > >> > decompressor. And I will have to ask something different. > >> > >> OK, I'll start the tests now, I'll let you know the outcome when I'm > >> done. > > > > Hm, that was quick... Even with your unmodified patch, the machine > > still reboots. Does that make any sense to you? > > > > I can try installing a more recent system on the same hardware if it > > helps. > > Grr. I guessed the problem was to late in the game it seems the problem > is in setup.S Before we switch to 32bit mode. > > Ok. There is almost enough for inference but here is a patch of stops > for setup.S let's see if one of those will stop the reboots. > > I have a strong feeling that we are going to find a tool chain issue, > but I'd like to find where we ware having problems before we declare > that to be the case. > Looks like it might be a tool chain issue. I took Jean's config file and built my own kernel and I am able to boot the kernel. But I can't boot his bzImage. I observed the same behaviour as jean is experiencing. It jumps back to BIOS. I am using grub 0.97. So any dependency on lilo can be ruled out in this case. Following is my software environment. gcc version 4.1.1 20061130 (Red Hat 4.1.1-43) GNU ld version 2.17.50.0.6-2.el5 20061020 I got Intel Xeon machine. processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 4 model name : Intel(R) Xeon(TM) CPU 3.40GHz stepping : 3 cpu MHz : 3400.483 cache size : 2048 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 1 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 5 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe lm constant_tsc pni monitor ds_cpl est cid cx16 xtpr bogomips : 6805.59 clflush size : 64 Thanks Vivek - 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/