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Re: GRUB on OLPC / XO
From: |
Robert Millan |
Subject: |
Re: GRUB on OLPC / XO |
Date: |
Mon, 21 Jan 2008 12:33:11 +0100 |
User-agent: |
Mutt/1.5.13 (2006-08-11) |
On Mon, Jan 21, 2008 at 11:24:52AM +0100, Marco Gerards wrote:
> >
> > _start: 0x10000, _end: 0x1f804
> > Using memory for heap: addr=0x100000, end=0x400000
> > Using memory for heap: addr=0x2000, end=0x9ffff
> > Welcome to GRUB!
> >
> > See how our core image and the second heap chunk overlap. I'm not sure if
> > this
> > is a bug in OFW's /memory/available, but in any case it doesn't hurt to add
> > a
> > generic sanity check in our memory manager to avoid this sort of breakage.
> >
> > It's also be useful to protect our own stack, etc..
> >
> > What do you think?
>
> At least some kind of check should be available. It could also be in
> init.c.
Yep.
I concluded that there's nothing usefuly portable about having this in kern/,
and proposed:
[PATCH] safety check in claim_heap()
see my other mail below.
--
Robert Millan
<GPLv2> I know my rights; I want my phone call!
<DRM> What use is a phone call… if you are unable to speak?
(as seen on /.)