From: Pavel Roskin <proski@gnu.org>
To: The development of GRUB 2 <grub-devel@gnu.org>
Subject: Re: does module area require alignment? (Re: [PATCH] i386-qemu port)
Date: Mon, 22 Jun 2009 20:10:54 -0400 [thread overview]
Message-ID: <1245715854.7063.51.camel@mj> (raw)
In-Reply-To: <d7ead6de0906221550v34bbaad4g526a26cbd753d5ed@mail.gmail.com>
On Tue, 2009-06-23 at 00:50 +0200, Vladimir 'phcoder' Serbinenko wrote:
> I made 3 images with the gap of 0x4000, 0x8000 and 0xc000.
> Then I added
> an uninitialized array to the kernel, 0x4000 bytes long, and
> made
> another 3 images with the same gap sizes. The images with the
> 0x4000
> gap don't boot and the images with the gap sized 0x8000 and
> 0xc000 boot
> regardless of the array.
> Stupid question but have you ensured/checked that this array isn't
> optimized out?
Yes, I checked that.
It turns out that small variables to to the .sbss section and reduce the
minimal gap side (0x8c50 and 0x8c54 are OK). But larger arrays go to
the .bss section and don't change the gap (0x8c50 is bad, 0x8c54 is OK).
Maybe OpenFirmware is confused by the .sbss section. I'll try a linker
script to merge .sbss into the .bss section.
--
Regards,
Pavel Roskin
next prev parent reply other threads:[~2009-06-23 0:11 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
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 [this message]
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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1245715854.7063.51.camel@mj \
--to=proski@gnu.org \
--cc=grub-devel@gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.