From: "Yoshinori K. Okuji" <okuji@enbug.org>
To: The development of GRUB 2 <grub-devel@gnu.org>
Subject: Re: [PATCH] generic ELF loading
Date: Wed, 25 Oct 2006 07:53:23 +0200 [thread overview]
Message-ID: <200610250753.24339.okuji@enbug.org> (raw)
In-Reply-To: <1161720181.23331.25.camel@basalt.austin.ibm.com>
On Tuesday 24 October 2006 22:03, Hollis Blanchard wrote:
> Actually I'm not using the heap, I'm just directly copying wherever
> phdr->p_paddr says to. That's not a good thing actually; in the future
> we should add some error checking to make sure we don't clobber GRUB
> itself.
OK, then it's even worse. :(
You must not assume that GRUB can always load an OS image to an appropriate
location directly. I know this is the case for the current implementation of
the Multiboot loader, but it is a very bad idea, generally speaking.
What GRUB should do is first to load an image to somewhere then relocate it to
the right place at boot time. On i386-pc, the OS area is used for this very
purpose. The x86 Multiboot loader is just a mistake, and that's why we must
rewrite it.
Okuji
next prev parent reply other threads:[~2006-10-25 5:53 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-13 22:37 [PATCH] generic ELF loading Hollis Blanchard
2006-10-13 22:40 ` [PATCH] ppc64 Linux ELF loader Hollis Blanchard
2006-10-14 15:33 ` [PATCH] generic ELF loading Yoshinori K. Okuji
2006-10-14 17:23 ` Tristan Gingold
2006-10-24 20:41 ` Hollis Blanchard
2006-10-24 20:03 ` Hollis Blanchard
2006-10-24 20:48 ` Johan Rydberg
2006-10-24 20:45 ` Hollis Blanchard
2006-10-25 5:53 ` Yoshinori K. Okuji [this message]
-- strict thread matches above, loose matches on Subject: below --
2006-10-14 3:03 Mao, Bibo
2006-10-24 20:21 ` Hollis Blanchard
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