linux-kernel - Re: Regression in 2.6.25-rc3: s2ram segfaults before suspending

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Message-ID: <20080304233027.GA15302@srcf.ucam.org>
Date:	Tue, 4 Mar 2008 23:30:27 +0000
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Jeremy Fitzhardinge <jeremy@...p.org>, Ingo Molnar <mingo@...e.hu>,
	"Klaus S. Madsen" <ksm@...rnemadsen.org>,
	Pavel Machek <pavel@....cz>,
	Suspend-devel list <suspend-devel@...ts.sourceforge.net>,
	LKML <linux-kernel@...r.kernel.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Thomas Gleixner <tglx@...utronix.de>,
	Arjan van de Ven <arjan@...radead.org>
Subject: Re: Regression in 2.6.25-rc3: s2ram segfaults before suspending

On Tue, Mar 04, 2008 at 03:11:17PM -0800, H. Peter Anvin wrote:
> Jeremy Fitzhardinge wrote:
> >>
> >>PAE activates NX on 32-bit. So we probably had an NX regression that 
> >>got fixed by the side-effects of one of the unifications. Does it 
> >>start working if you disable NX via the noexec=off boot option?
> >
> >What's the state of play here?  Is upshot that this change fixed a bug 
> >which broke s2ram, or caused a bug which broke s2ram?
> >
> 
> As far as I can tell, this change fixed a bug, and the fact that the bug 
> was fixed triggered a s2ram bug.

Strictly a libx86 bug, so I'll try to get an updated version uploaded in 
the near future. This won't hit x86_64 users, since the code is run 
through x86emu rather than executed directly.

-- 
Matthew Garrett | mjg59@...f.ucam.org
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