linux-kernel - Re: [rft] s2ram wakeup moves to .c, could fix few machines

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Date:	Fri, 8 Feb 2008 22:00:04 +0100
From:	Pavel Machek <pavel@....cz>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	kernel list <linux-kernel@...r.kernel.org>,
	Linux-pm mailing list <linux-pm@...ts.osdl.org>
Subject: Re: [rft] s2ram wakeup moves to .c, could fix few machines

On Fri 2008-02-08 17:23:15, Rafael J. Wysocki wrote:
> On Friday, 8 of February 2008, Pavel Machek wrote:
> > Hi!
> 
> Hi,
> 
> > > >I really need the entry point to be at offset 0, so 
> > > >that I can get
> > > >pointers to my data. I could not figure out how to do 
> > > >it any other
> > > >way. And if 0 is taken, I thought I'd put header at the 
> > > >end.
> > > >
> > > 
> > > Why not just put the structure at 0, and put pointers in 
> > > the structure to everything else you need?
> > 
> > segments:offsets rear its ugly head here. I need %ds to point to my
> > data, and the way to do it is copy it from %cs; that needs start to be
> > at 0.
> 
> Hm, why exactly is that necessay?

It is not _neccessary_. Try to come up with another method that gets
relocations right. I could not :-(.

(Actually, putting table at the offset 0 and short jump at beggining
of the table would probably do the trick. But that still keeps code at
offset 0 :-).
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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