linux-kernel - Re: Revert commit 5dcd14ecd4 - breaks EFI boot with SLES11 elilo.efi

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Date:	Wed, 06 Mar 2013 12:43:39 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Josh Boyer <jwboyer@...il.com>
CC:	Yinghai Lu <yinghai@...nel.org>, Robin Holt <holt@....com>,
	linux-kernel@...r.kernel.org, pjones@...hat.com
Subject: Re: Revert commit 5dcd14ecd4 - breaks EFI boot with SLES11 elilo.efi

Yeah.  I'll queue it up today and send to Linus in the next batch.

Josh Boyer <jwboyer@...il.com> wrote:

>On Wed, Mar 6, 2013 at 12:37 PM, H. Peter Anvin <hpa@...or.com> wrote:
>> On 03/06/2013 09:36 AM, Josh Boyer wrote:
>>>
>>> Something like this?
>>>
>>> Index: linux-2.6/arch/x86/include/asm/bootparam_utils.h
>>> ===================================================================
>>> --- linux-2.6.orig/arch/x86/include/asm/bootparam_utils.h
>>> +++ linux-2.6/arch/x86/include/asm/bootparam_utils.h
>>> @@ -20,8 +20,11 @@ static void sanitize_boot_params(struct
>>>       if (boot_params->sentinel) {
>>>               /*fields in boot_params are not valid, clear them */
>>>               memset(&boot_params->olpc_ofw_header, 0,
>>> -                    (char *)&boot_params->alt_mem_k -
>>> +                    (char *)&boot_params->efi_info -
>>>                       (char *)&boot_params->olpc_ofw_header);
>>>               memset(&boot_params->kbd_status, 0,
>>>                      (char *)&boot_params->hdr -
>>>                      (char *)&boot_params->kbd_status);
>>>
>>> I can try that in a bit.
>>>
>>
>> Right.
>
>OK.  Doing that on top of 3.9-rc1 results in me having a booting
>machine
>again.  I'd suggest we get that into upstream quick-ish.
>
>josh

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