linux-kernel - Re: [regression, bisected] x86: efi: Pass boot services variable info to runtime code

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Date:	Fri, 31 May 2013 07:41:10 -0700
From:	"H. Peter Anvin" <hpa@...ux.intel.com>
To:	Russ Anderson <rja@....com>
CC:	Matt Fleming <matt@...sole-pimps.org>,
	Matthew Garrett <matthew.garrett@...ula.com>,
	matt.fleming@...el.com, linux-efi@...r.kernel.org, x86@...nel.org,
	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Josh Boyer <jwboyer@...hat.com>
Subject: Re: [regression, bisected] x86: efi: Pass boot services variable
 info to runtime code

On 05/29/2013 01:16 PM, Russ Anderson wrote:
> 
> To be more specific (now that I've dug through the code), grub2 (used
> by rhel7) uses EFI boot stubs.  grub and elilo apparently do not use
> EFI boot stubs, so they don't hit the problem (at least on my test
> systems).
> 

Grub2 *can* use the EFI boot stub... as far as I know it doesn't by
default, but the way it is used in RHEL does.

Either way, we need to fix this and fix it soon.

	-hpa


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