From: Robert Millan <rmh@aybabtu.com>
To: The development of GRUB 2 <grub-devel@gnu.org>
Subject: Re: does module area require alignment? (Re: [PATCH] i386-qemu port)
Date: Sun, 21 Jun 2009 21:33:33 +0200 [thread overview]
Message-ID: <20090621193333.GD21827@thorin> (raw)
In-Reply-To: <1245611299.4250.13.camel@mj>
On Sun, Jun 21, 2009 at 03:08:19PM -0400, Pavel Roskin wrote:
> On Sun, 2009-06-21 at 20:50 +0200, Robert Millan wrote:
>
> > Does anyone know why do we align ELF targets? When I did the coreboot port,
> > the ELF part was based on existing Ieee1275 code, so I guess I just mimicked
> > it. Is there some issue with non-i386 CPUs or with some Ieee1275
> > implementations that makes this alignment a requirement?
>
> It was a hack for PowerPC openfirmware. I don't know why it was needed.
> I didn't have time and desire to debug openfirmware to find out what it
> wants.
Is the hack you're referring to GRUB_MOD_GAP, GRUB_MOD_ALIGN or both?
Btw, I suspect GRUB_MOD_GAP might be related to the modules overlapping with
the BSS because of a firmware loader bug. Is there a correlation between
the needed GRUB_MOD_GAP and the BSS size?
--
Robert Millan
The DRM opt-in fallacy: "Your data belongs to us. We will decide when (and
how) you may access your data; but nobody's threatening your freedom: we
still allow you to remove your data and not access it at all."
next prev parent reply other threads:[~2009-06-21 19:33 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-21 18:17 [PATCH] i386-qemu port Robert Millan
2009-06-21 18:50 ` does module area require alignment? (Re: [PATCH] i386-qemu port) Robert Millan
2009-06-21 19:08 ` Pavel Roskin
2009-06-21 19:33 ` Robert Millan [this message]
2009-06-22 12:31 ` [PATCH] define GRUB_MOD_ALIGN to 0 on non-ieee1275 (Re: does module area require alignment? (Re: [PATCH] i386-qemu port)) Robert Millan
2009-06-22 19:43 ` Pavel Roskin
2009-06-22 20:41 ` Robert Millan
2009-06-22 20:51 ` Pavel Roskin
2009-06-22 21:22 ` Robert Millan
2009-06-22 21:45 ` Pavel Roskin
2009-06-22 22:31 ` Robert Millan
2009-06-22 19:51 ` does module area require alignment? (Re: [PATCH] i386-qemu port) Pavel Roskin
2009-06-22 22:50 ` Vladimir 'phcoder' Serbinenko
2009-06-23 0:10 ` Pavel Roskin
2009-06-21 18:54 ` [PATCH] move grub_stop() " Robert Millan
2009-06-21 19:05 ` Pavel Roskin
2009-06-21 19:25 ` Robert Millan
2009-06-22 2:14 ` Pavel Roskin
2009-06-22 10:10 ` Robert Millan
2009-06-22 16:16 ` Pavel Roskin
2009-06-22 18:05 ` Robert Millan
2009-06-21 19:00 ` [PATCH] i386-qemu port Pavel Roskin
2009-06-21 19:30 ` Robert Millan
2009-06-22 12:45 ` Robert Millan
2009-06-21 20:34 ` Robert Millan
2009-06-21 20:40 ` Vladimir 'phcoder' Serbinenko
2009-06-21 19:19 ` [PATCH] rename kernel.elf to kernel.img (Re: [PATCH] i386-qemu port) Robert Millan
2009-06-22 2:20 ` Pavel Roskin
2009-06-22 10:27 ` Robert Millan
2009-06-21 19:52 ` [PATCH] swap real_to_prot() and prot_to_real() " Robert Millan
2009-06-22 1:56 ` Pavel Roskin
2009-06-22 10:45 ` Robert Millan
2009-06-21 20:22 ` [PATCH] i386-qemu port Robert Millan
2009-06-22 1:50 ` Pavel Roskin
2009-06-22 10:57 ` Robert Millan
2009-06-21 22:53 ` [PATCH] access gdtdesc on segment 0 unconditionally (Re: [PATCH] i386-qemu port) Robert Millan
2009-06-22 1:22 ` Pavel Roskin
2009-06-22 9:52 ` Robert Millan
2009-06-22 19:39 ` Pavel Roskin
2009-06-22 20:52 ` Robert Millan
2009-06-22 21:32 ` Robert Millan
2009-06-22 21:44 ` Pavel Roskin
2009-06-22 22:43 ` Robert Millan
2009-06-23 0:53 ` Pavel Roskin
2009-06-23 11:02 ` Robert Millan
2009-06-22 21:36 ` Pavel Roskin
2009-06-22 22:52 ` Robert Millan
2009-06-22 10:26 ` about Apple compiler (Re: [PATCH] access gdtdesc on segment 0 unconditionally (Re: [PATCH] i386-qemu port)) Robert Millan
2009-06-22 16:10 ` Pavel Roskin
2009-06-22 15:02 ` [PATCH] s/GRUB_MEMORY_MACHINE_LINK_ADDR/GRUB_KERNEL_MACHINE_LINK_ADDR/g (Re: [PATCH] i386-qemu port) Robert Millan
2009-06-22 19:00 ` Pavel Roskin
2009-06-22 23:07 ` clean patch for i386-qemu port " Robert Millan
2009-06-23 1:29 ` Pavel Roskin
2009-06-23 11:38 ` Robert Millan
2009-06-23 12:13 ` Robert Millan
2009-06-24 1:00 ` Robert Millan
2009-06-24 23:10 ` [PATCH] fix for loading modules from read-only memory area (Re: clean patch for i386-qemu port (Re: [PATCH] i386-qemu port)) Robert Millan
2009-06-25 19:53 ` Pavel Roskin
2009-06-25 20:31 ` Robert Millan
2009-06-25 20:51 ` Pavel Roskin
2009-06-26 14:41 ` Robert Millan
2009-06-26 16:44 ` Pavel Roskin
2009-06-26 17:03 ` Robert Millan
2009-06-26 17:16 ` Pavel Roskin
2009-06-26 17:43 ` Robert Millan
2009-06-26 19:52 ` Pavel Roskin
2009-06-26 22:26 ` Pavel Roskin
2009-06-26 23:57 ` Robert Millan
2009-06-27 3:08 ` Pavel Roskin
2009-06-27 11:18 ` Robert Millan
2009-06-29 3:48 ` Pavel Roskin
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