Compiling User-Mode-Linux kernel

[Gordon Haverland <ghaverla@materialisations.com>]

Hello.

I've almost always compiled my own kernels, across a bunch of 
things for quite a while (UN*X experience back to 1984, Linux to 
1997?).  Some shortcomings of using chroot to isolate things has 
lead me to wanting to try UML.

So, I did a little reading, and figured I should use the skas 
patch that Debian has available.  Compiling a new 2.6.18 kernel 
(and nvidia module) making use of the patch went well.  But, 
adding a --arch=um line to the make-kpkg command line to compile 
a UML kernel has generated a few errors.  I've manually patched 
kernel.org sources to get token ring support on newer kernels 
than the patch supported, so I am somewhat familiar with patching 
things.  The errors look to me like I am missing a patch or two, 
which would seem to point at missing dependencies of some kind.  
However, I have no idea where to look, and looking in the 
archives of this list, googling, etc. hasn't shook anything 
loose.  Maybe someone could get me pointed in the right 
direction?

-------------------------
...
In file included from include/asm/smp.h:17,
                 from include/linux/smp.h:18,
                 from include/linux/sched.h:63,
                 from arch/um/include/sysdep/kernel-offsets.h:2,
                 from arch/um/kernel/asm-offsets.c:1:
include/asm/mpspec.h:6:25: error: mach_mpspec.h: No such file or 
directory
In file included from include/asm/smp.h:17,
                 from include/linux/smp.h:18,
                 from include/linux/sched.h:63,
                 from arch/um/include/sysdep/kernel-offsets.h:2,
                 from arch/um/kernel/asm-offsets.c:1:
include/asm/mpspec.h:8: error: 'MAX_MP_BUSSES' undeclared here 
(not in a function)
include/asm/mpspec.h:22: error: 'MAX_IRQ_SOURCES' undeclared here 
(not in a function)
In file included from include/linux/smp.h:18,
                 from include/linux/sched.h:63,
                 from arch/um/include/sysdep/kernel-offsets.h:2,
                 from arch/um/kernel/asm-offsets.c:1:
include/asm/smp.h:76:26: error: mach_apicdef.h: No such file or 
directory
In file included from include/linux/smp.h:18,
                 from include/linux/sched.h:63,
                 from arch/um/include/sysdep/kernel-offsets.h:2,
                 from arch/um/kernel/asm-offsets.c:1:
include/asm/smp.h: In function 'hard_smp_processor_id':
include/asm/smp.h:80: warning: implicit declaration of 
function 'GET_APIC_ID'
In file included from arch/um/kernel/asm-offsets.c:1:
arch/um/include/sysdep/kernel-offsets.h: In function 'foo':
arch/um/include/sysdep/kernel-offsets.h:20: error: 'struct 
thread_struct' has no member named 'arch'
In file included from arch/um/include/sysdep/kernel-offsets.h:25,
                 from arch/um/kernel/asm-offsets.c:1:
arch/um/include/common-offsets.h:3: error: 'struct thread_struct' 
has no member named 'regs'
-------------------------

Thanks.
Gord