[uml-devel] sparc64 and checksum.h problem

[Iain Y. <ia...@g7...>]

Hi All,

Well, I have moved the compile of um-sparc64 forward quite a bit, but
am now stuck in kernel/ksyms.c. The actual problem comes from
include/asm/{sparc64}/checksum.h, and Im wondering what the best way
to approach it is.

The problem is that csum_partial_copy_nocheck references thread.current_ds.seg,
which is only defined (as mm_segment_t) on the sparc64 specific thread
implementation, and not defined at all on the generic thread UML
implementation.

What do people think the best way around this is ? Annoyingly, the reference
to thread.current_ds.seg places the result into a piece of UltraSPARC
assembly code.

(My asm/processor.h is currently very similar to the PPC version, but
calling in the sparc64 bits, instead of PPC - of course *grin*)

Do I fix the checksum.h code by making it talk to the generic thread
definition (as defined in asm/processor-generic.h) ? Or do I go the other
way, and force it to use the sparc64 thread implementation ?

Im guessing if I do use the sparc64 thread implementation, Ill end up
breaking UML anyway ?


Iain
(who is getting himself very confused wandering between processor*.h's,
checksum.h, and  associated .h's :>)