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Re: [PATCH] memdisk plus lnxboot extension

From: Robert Millan
Subject: Re: [PATCH] memdisk plus lnxboot extension
Date: Thu, 24 Jan 2008 17:55:55 +0100
User-agent: Mutt/1.5.13 (2006-08-11)

On Thu, Jan 24, 2008 at 03:25:51PM +0100, Robert Millan wrote:
> You want to add a feature that only works when you have the ability to load
> images of an arbitrary size.  However, if we had this ability we wouldn't have
> to compress core.img, or make it small in the first place.  We would then
> just create core.img of an arbitrary size, and include a memdisk of an
> arbitrary size in it.  But then we wouldn't need a feature to work around the
> size restriction in memdisk!

Just discussed it with Marco on IRC, and he said we could load core.img in high
memory, like in 0x100000 right away.  This solves the size limit in memdisk
which I think is the source of the problem.

Of course, this collides with the OS load area, so we'd also need to add
relocation in loader, as described in the "grub_dl_unload_all()" thread.  I
do even have unfinished code for this, although it may take a while to get it
done properly (maybe we need to add features to memory manager or so).  Does
this work for you?

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 /.)

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