Re: immediately reboots/resets on EFI system

From: Jim Bos
Date: Fri Jun 03 2011 - 10:26:37 EST

On 06/03/2011 03:33 PM, Matthew Garrett wrote:
> On Fri, Jun 03, 2011 at 03:05:26PM +0200, Jim Bos wrote:
>> *,
>> Just applied 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 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 with these changes removed.
> Can you try just reverting
> "x86, efi: Retain boot service code until after switching to virtual mode"
> ? You've got 143 boot services/code regions, which is more than I'd
> tested against, so I'm unsure whether we're overflowing something here.

That's seems to be the only EFI patch in and I effectively
removed by =not= applying (skipping) the parts of the patch to
above 3 files.
So yes removing "x86, efi: Retain boot service code until after
switching to virtual mode" indeed fixes the problem for me.

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