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Re: [multiboot] abstractmbi, modules

From: Vladimir 'φ-coder/phcoder' Serbinenko
Subject: Re: [multiboot] abstractmbi, modules
Date: Thu, 14 Jan 2010 16:07:22 +0100
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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
> address@hidden

Vladimir 'φ-coder/phcoder' Serbinenko

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