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

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Date:	Mon, 06 Jun 2011 18:11:08 +0200
From:	Jim Bos <jim876@...all.nl>
To:	Maarten Lankhorst <m.b.lankhorst@...il.com>
CC:	Matthew Garrett <mjg59@...f.ucam.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Greg KH <gregkh@...e.de>,
	"H. Peter Anvin" <hpa@...ux.intel.com>
Subject: Re: 2.6.39.1 immediately reboots/resets on EFI system

On 06/06/2011 05:27 PM, Maarten Lankhorst wrote:
> Hi Jim,
> 
> 2011/6/3 Jim Bos <jim876@...all.nl>:
>> 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 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.
>>>
>>> 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 2.6.39.1 and I effectively
>> removed by =not= applying (skipping) the parts of the 2.6.39.1 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.
> Does manually applying commit 9cd2b07c1 fix things for 2.6.39.1?
> commit is: x86, efi: Consolidate EFI nx control
> 
> There will be 1 apply  failure, need to change the call to
> early_mapping_set_exec in early_runtime_code_mapping_set_exec to
> efi_set_executable.
> 
> ~Maarten
> 

Maarten,

Yes that boots, but with the "BUG Bad page state .." as well (so would
need you other patch).

Jim
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