linux-kernel - Re: [patch 2/6] x86 efi: reserve boot service fix

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Message-ID: <20131027203058.GE1982@console-pimps.org>
Date:	Sun, 27 Oct 2013 20:30:58 +0000
From:	Matt Fleming <matt@...sole-pimps.org>
To:	Borislav Petkov <bp@...en8.de>
Cc:	dyoung@...hat.com, linux-kernel@...r.kernel.org,
	linux-efi@...r.kernel.org, x86@...nel.org, mjg59@...f.ucam.org,
	hpa@...or.com, James.Bottomley@...senPartnership.com,
	vgoyal@...hat.com, ebiederm@...ssion.com, horms@...ge.net.au,
	kexec@...ts.fedoraproject.org, kexec@...ts.infradead.org
Subject: Re: [patch 2/6] x86 efi: reserve boot service fix

On Sun, 27 Oct, at 11:50:09AM, Borislav Petkov wrote:
> On Sun, Oct 27, 2013 at 11:47:15AM +0800, dyoung@...hat.com wrote:
> > Current code check boot service region with kernel text region by: 
> > start+size >= __pa_symbol(_text)
> > The end of the above region should be start + size - 1 instead.
> > 
> > I see this problem in ovmf + Fedora 19 grub boot:
> > text start: 1000000 md start: 800000 md size: 800000
> > 
> > Signed-off-by: Dave Young <dyoung@...hat.com>
> 
> Acked-by: Borislav Petkov <bp@...e.de>
> 
> Btw, Matt, this being a bugfix and all, shouldn't it be tagged for
> stable?

Well that depends. Dave, am I correct in thinking that you only noticed
this bug when writing kexec support? I'm inclined not to bother with a
stable tag if no one has ever noticed any fallout from this bug until
now.

-- 
Matt Fleming, Intel Open Source Technology Center
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