On Sat, Mar 31, 2007 at 09:17:26PM -0400, Jeff Dike wrote:
> On Sun, Apr 01, 2007 at 02:45:52AM +0200, jez wrote:
> > I've run into problems trying to nest a 2.6.20 kernel inside a 
> > 2.6.20 (vanilla, skas0). 
> 
> Yeah, this isn't going to work.  CONFIG_NEST_LEVEL needs to adjust the
> location of the stub pages in the inner UML, ...

Yep, that's an improvement alright. I changed the address prefix from
0xbf down to 0xbb on the stub defaults and now I'm getting:

-- Output --
EXT3-fs: mounted filesystem with ordered data mode.
VFS: Mounted root (ext3 filesystem) readonly.
line_ioctl: tty0: ioctl KDSIGACCEPT called
INIT: version 2.86 booting
*** glibc detected *** double free or corruption (!prev): 0x08051068 ***
-- End --

I'll dig deeper tommorow. Thanks Jeff.

> ... or it needs to be something that can be set from the command line.
 
You mean so that all UMLs could be used something like: 

    ./vmlinux --level 1 

Nice!


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