* [multiboot] abstractmbi, modules
@ 2010-01-14 14:49 Grégoire Sutre
2010-01-14 15:07 ` Vladimir 'φ-coder/phcoder' Serbinenko
0 siblings, 1 reply; 6+ messages in thread
From: Grégoire Sutre @ 2010-01-14 14:49 UTC (permalink / raw)
To: The development of GRUB 2
Hi,
I made some tests with the people/phcoder/abstractmbi branch, but I'm a
bit late reporting them... Better late than never I guess :-)
I compiled the branch and installed GRUB from Linux on a USB stick, and
then booted my NetBSD box from the stick, with multiboot. It worked
like a charm. :-)
Regarding the question (on irc) whether it also works with modules, it
turns out that NetBSD/i386 kernel multiboot code lacks module support
(in -current). Therefore, to test modules, I tried booting Xen 3.3
(with NetBSD as DOM0), with:
grub> multiboot (...)/xen.gz console=vga
grub> module (...)/netbsd-XEN3PAE_DOM0 console=pc
grub> boot
and I got an error "Panic on CPU0" from Xen (before booting DOM0). This
is with the abstractmbi branch, I didn't try with GRUB trunk. There are
some reports in the archives of grub-devel regarding problems with Xen
3.3, so maybe this is a known issue with GRUB. Note that with NetBSD's
boot loader, which is also able to multiboot with modules, doing:
load /netbsd-XEN3PAE_DOM0 console=pc
multiboot /xen.gz console=vga
works fine.
Grégoire
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [multiboot] abstractmbi, modules
2010-01-14 14:49 [multiboot] abstractmbi, modules Grégoire Sutre
@ 2010-01-14 15:07 ` Vladimir 'φ-coder/phcoder' Serbinenko
2010-01-14 19:01 ` Grégoire Sutre
0 siblings, 1 reply; 6+ messages in thread
From: Vladimir 'φ-coder/phcoder' Serbinenko @ 2010-01-14 15:07 UTC (permalink / raw)
To: The development of GNU GRUB
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Grégoire Sutre wrote:
> Hi,
>
> I made some tests with the people/phcoder/abstractmbi branch, but I'm
> a bit late reporting them... Better late than never I guess :-)
>
> I compiled the branch and installed GRUB from Linux on a USB stick,
> and then booted my NetBSD box from the stick, with multiboot. It
> worked like a charm. :-)
>
> Regarding the question (on irc) whether it also works with modules, it
> turns out that NetBSD/i386 kernel multiboot code lacks module support
> (in -current). Therefore, to test modules, I tried booting Xen 3.3
> (with NetBSD as DOM0), with:
>
> grub> multiboot (...)/xen.gz console=vga
> grub> module (...)/netbsd-XEN3PAE_DOM0 console=pc
> grub> boot
>
> and I got an error "Panic on CPU0" from Xen (before booting DOM0).
It's known problem: xen makes inappropriate assumptions about mbi placement
> This is with the abstractmbi branch, I didn't try with GRUB trunk.
> There are some reports in the archives of grub-devel regarding
> problems with Xen 3.3, so maybe this is a known issue with GRUB. Note
> that with NetBSD's boot loader, which is also able to multiboot with
> modules, doing:
>
> load /netbsd-XEN3PAE_DOM0 console=pc
> multiboot /xen.gz console=vga
>
> works fine.
>
> Grégoire
>
>
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> http://lists.gnu.org/mailman/listinfo/grub-devel
>
--
Regards
Vladimir 'φ-coder/phcoder' Serbinenko
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [multiboot] abstractmbi, modules
2010-01-14 15:07 ` Vladimir 'φ-coder/phcoder' Serbinenko
@ 2010-01-14 19:01 ` Grégoire Sutre
2010-01-19 22:43 ` Robert Millan
0 siblings, 1 reply; 6+ messages in thread
From: Grégoire Sutre @ 2010-01-14 19:01 UTC (permalink / raw)
To: The development of GNU GRUB
Vladimir 'φ-coder/phcoder' Serbinenko wrote:
> It's known problem: xen makes inappropriate assumptions about mbi placement
I'm wondering why it works with the NetBSD boot-loader. What are these
assumptions?
Grégoire
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [multiboot] abstractmbi, modules
2010-01-14 19:01 ` Grégoire Sutre
@ 2010-01-19 22:43 ` Robert Millan
2010-01-20 0:57 ` Seth Goldberg
0 siblings, 1 reply; 6+ messages in thread
From: Robert Millan @ 2010-01-19 22:43 UTC (permalink / raw)
To: The development of GNU GRUB
On Thu, Jan 14, 2010 at 08:01:21PM +0100, Grégoire Sutre wrote:
> Vladimir 'φ-coder/phcoder' Serbinenko wrote:
>
>> It's known problem: xen makes inappropriate assumptions about mbi placement
>
> I'm wondering why it works with the NetBSD boot-loader. What are these
> assumptions?
Loader in GRUB 2 tends to put MBI and associated structures right after
payload code (unlike GRUB Legacy which uses a fixed location below 1 MiB).
--
Robert Millan
"Be the change you want to see in the world" -- Gandhi
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [multiboot] abstractmbi, modules
2010-01-19 22:43 ` Robert Millan
@ 2010-01-20 0:57 ` Seth Goldberg
2010-01-20 23:38 ` Grégoire Sutre
0 siblings, 1 reply; 6+ messages in thread
From: Seth Goldberg @ 2010-01-20 0:57 UTC (permalink / raw)
To: The development of GNU GRUB
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Hi,
The latest version of Solaris xVM (based on Xen 3.4) is bootable from GRUB2,
so that confirms that the bug was fixed in 3.4, so please give that a try.
--S
Quoting Robert Millan, who wrote the following on Tue, 19 Jan 2010:
> On Thu, Jan 14, 2010 at 08:01:21PM +0100, Grégoire Sutre wrote:
>> Vladimir 'φ-coder/phcoder' Serbinenko wrote:
>>
>>> It's known problem: xen makes inappropriate assumptions about mbi placement
>>
>> I'm wondering why it works with the NetBSD boot-loader. What are these
>> assumptions?
>
> Loader in GRUB 2 tends to put MBI and associated structures right after
> payload code (unlike GRUB Legacy which uses a fixed location below 1 MiB).
>
> --
> Robert Millan
>
> "Be the change you want to see in the world" -- Gandhi
>
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> http://lists.gnu.org/mailman/listinfo/grub-devel
>
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2010-01-20 23:38 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
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2010-01-14 14:49 [multiboot] abstractmbi, modules Grégoire Sutre
2010-01-14 15:07 ` Vladimir 'φ-coder/phcoder' Serbinenko
2010-01-14 19:01 ` Grégoire Sutre
2010-01-19 22:43 ` Robert Millan
2010-01-20 0:57 ` Seth Goldberg
2010-01-20 23:38 ` Grégoire Sutre
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