linux-kernel - Re: 3.9.7, 3.10-rc7 - UEFI stalls at boot (nothing displayed), when booting with mem=300M

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Message-ID: <51D17F15.4080000@gentoo.org>
Date:	Mon, 01 Jul 2013 15:07:33 +0200
From:	Luca Barbato <lu_zero@...too.org>
To:	Matthew Garrett <mjg59@...f.ucam.org>
CC:	Matthew Thode <prometheanfire@...too.org>,
	linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org,
	kernel@...too.org, hardened-kernel@...too.org, corsac@...ian.org
Subject: Re: 3.9.7, 3.10-rc7 - UEFI stalls at boot (nothing displayed), when
 booting with mem=300M

On 07/01/2013 08:25 AM, Matthew Garrett wrote:
> On Mon, Jul 01, 2013 at 07:22:32AM +0200, Luca Barbato wrote:
> 
>> MacBookPro8,2 with efi-stub, loading directly from the efi shell w/out
>> any memory restriction.
> 
> How do you know this is the same issue?
> 

I believe in duck bugs, if the range of broken commits looks the same,
and the behaviour looks the same, probably the cause is the same, or at
least I once can be investigated on real hardware and probably once
fixed the other might be fixed as well.

I have not deep knowledge of uefi/efi internals so I'll need some
pointers to figure out exactly why it happens.

Hopefully I will carve some time next weekend to play the restricted
bisect game.

lu
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