K 10
svn:author
V 3
raj
K 8
svn:date
V 27
2008-08-26T17:07:37.131157Z
K 7
svn:log
V 323
Improve kernel stack handling on e500.

- Allocate thread0.td_kstack in pmap_bootstrap(), provide guard page
- Switch to thread0.td_kstack as soon as possible i.e. right after return
  from e500_init() and before mi_startup() happens
- Clean up temp stack area
- Other minor cosmetics in machdep.c

Obtained from:	Semihalf

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