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

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Message-ID: <20080207234103.GC21468@elf.ucw.cz>
Date:	Fri, 8 Feb 2008 00:41:03 +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

Hi!

> > > > > +	header = (struct wakeup_header *)(acpi_realmode + 0x3f00);
> > > > 
> > > > ... especially not with magic constants like this.
> > > 
> > > Yeah.  Pavel, what's at 0x3f00, btw?
> > 
> > struct wakeup_header.
> > 
> > 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.
> 
> What does the number 0x3f00 follow from?

wakeup.ld:

SECTIONS
{
	. = 0x3f00;
	.header		: { *(.header) }

Ok, if we can use defines, this is probably great candidate for one of
them.
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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