linux-kernel - Re: [REGRESSION] "efi: efistub: Convert into static library" and preparation patches

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Message-ID: <20140904072949.GI3001@console-pimps.org>
Date:	Thu, 4 Sep 2014 08:29:49 +0100
From:	Matt Fleming <matt@...sole-pimps.org>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Ard Biesheuvel <ard.biesheuvel@...aro.org>,
	Maarten Lankhorst <maarten.lankhorst@...onical.com>,
	Ulf Winkelvos <ulf@...kelvos.de>,
	Matt Fleming <matt.fleming@...el.com>,
	LKML <linux-kernel@...r.kernel.org>,
	"x86@...nel.org" <x86@...nel.org>,
	"linux-efi@...r.kernel.org" <linux-efi@...r.kernel.org>,
	Seth Forshee <seth.forshee@...onical.com>,
	Matthew Garrett <mjg59@...f.ucam.org>
Subject: Re: [REGRESSION] "efi: efistub: Convert into static library" and
 preparation patches

On Wed, 03 Sep, at 02:47:32PM, H. Peter Anvin wrote:
> 
> I think we really have two options: either fix up the GOT (which may be
> a null operation, if the GOT is empty) or we add a compile-time check
> that the GOT is empty, lest we will keep having these problems.
> 
> Since the GOT fixup loop is only a few instructions, it doesn't seem to
> be all that problematic to just do it -- but make sure we don't end up
> running it twice on any code path!

Urgh, I totally did make it run twice. My bad.

-- 
Matt Fleming, Intel Open Source Technology Center
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