linux-kernel - Re: [tip:x86/urgent] x86, efi stub: Add .reloc section back into image

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Message-ID: <4FD10CFC.8030000@gmail.com>
Date:	Thu, 07 Jun 2012 22:20:12 +0200
From:	Maarten Lankhorst <m.b.lankhorst@...il.com>
To:	lee.g.rosenbaum@...el.com, mingo@...nel.org, hpa@...or.com,
	linux-kernel@...r.kernel.org, jordan.l.justen@...el.com,
	tglx@...utronix.de, rydberg@...omail.se, matt.fleming@...el.com
CC:	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:x86/urgent] x86, efi stub: Add .reloc section back into
 image

Hey,

Op 07-06-12 20:37, tip-bot for Jordan Justen schreef:
> Commit-ID:  743628e868c5992354fc80b4d1e9a6143da1c0e6
> Gitweb:     http://git.kernel.org/tip/743628e868c5992354fc80b4d1e9a6143da1c0e6
> Author:     Jordan Justen <jordan.l.justen@...el.com>
> AuthorDate: Thu, 7 Jun 2012 09:05:21 -0700
> Committer:  H. Peter Anvin <hpa@...or.com>
> CommitDate: Thu, 7 Jun 2012 09:52:33 -0700
>
> x86, efi stub: Add .reloc section back into image
>
> Some UEFI firmware will not load a .efi with a .reloc section
> with a size of 0.
>
> Therefore, we create a .efi image with 4 main areas and 3 sections.
> 1. PE/COFF file header
> 2. .setup section (covers all setup code following the first sector)
> 3. .reloc section (contains 1 dummy reloc entry, created in build.c)
> 4. .text section (covers the remaining kernel image)
>
Scary how some patches arrive a few minutes before you need them.
I can verify applying this patch fixes efi stub booting for my system.
I wasn't even aware it was broken, but it definitely didn't want to boot
without. :-)

~Maarten
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