linux-kernel - 2.6.39.1 immediately reboots/resets on EFI system

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Date:	Fri, 03 Jun 2011 15:05:26 +0200
From:	Jim Bos <jim876@...all.nl>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Matthew Garrett <mjg@...hat.com>
CC:	Greg KH <gregkh@...e.de>, "H. Peter Anvin" <hpa@...ux.intel.com>
Subject: 2.6.39.1 immediately reboots/resets on EFI system

*,

Just applied 2.6.39.1 but my system: 64-bit SLackware, 8GB RAM, MSI mobo
P67A-C45 bios V1.9. previously happily booting via EFI (nice to see
Linux and the other OS actually NOT overwriting each others boot
loaders!) immediately re-booted just after loading the kernel.

Not even a single message is making it on the console, almost immediate
system reset.  As I noticed there are several EFI related patches, I
first tried to backout the change to setup.c but that didn't help so
backing out all the efi changes in the 2.6.39.1 patch, i.e. the files:
 - arch/x86/kernel/setup.c
 - arch/x86/platform/efi/efi.c
 - arch/x86/platform/efi/efi_64.c
and sure enough system is booting on 2.6.39.1 with these changes removed.

Attached dmesg+config from the system on 2.6.39.1 =without= the changes
to efi.

Anything I can do to further narrow down what's causing this?

Thanks,
Jim

Download attachment "config-2.6.39.1.gz" of type "application/gzip" (20748 bytes)

Download attachment "dmesg-2.6.39.1-withoutEFIpart.gz" of type "application/gzip" (10623 bytes)