On Tuesday 03 January 2006 13:30, Joel Palmius wrote:
> root_fs is an unmodified gentoo 2005.1 athlon-xp stage3. Host is amd64
> running 2.6.14-skas3-v9-pre7.
>
> Host glibc is 2.3.5-r2. Host gcc is 3.4.4-r1. 32-bit chroot (see 32-bit
> test below) glibc is 2.3.4.20041102-r1, 32-bit chroot's gcc is
> 3.3.5.20050130-r1. Root_fs is same image as chroot.
>
> Guest kernel is built with defconfig + enabling TT. (Note comment about
> processor features at bottom of mail). Guest kernel is vanilla 2.6.15, no
> patches applied.

> Comments
> ++++++++
> When compiling guest for 32-bit I noticed an option for host processor
> features, where I could enable generic x86. This option did not appear in
> 64-bit mode.

That's fine - I didn't add that menu for x86_64 because it's pointless now, 
all x86_64 processor are more or less the same.

> Is the binfmt stuff due to no 32-bit emulation compatibility? 
Yes. It's trying to modprobe support for ELF-32 bit by calling /sbin/modprobe, 
which in turn again requires that support... chicken and egg problem is 
causing the "recursing forever" thing.

> I have yet to test the 64-bit guest with a 64-bit root_fs. (Maybe it's a
> "doh!" on my side

Exactly - it should work, but it's a TODO yet.

> that the 64-bit guest kernel doesn't work with 32-bit 
> root_fs's)

-- 
Inform me of my mistakes, so I can keep imitating Homer Simpson's "Doh!".
Paolo Giarrusso, aka Blaisorblade (Skype ID "PaoloGiarrusso", ICQ 215621894)
http://www.user-mode-linux.org/~blaisorblade

        

        
                
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