K 10
svn:author
V 8
jchandra
K 8
svn:date
V 27
2010-08-12T10:09:28.037160Z
K 7
svn:log
V 446
Implement pmap changes suggested by alc@:

1. Move dirty bit emulation code that is duplicted for kernel and user
in trap.c to a function pmap_emulate_modified() in pmap.c.

2. While doing dirty bit emulation, it is not necessary to update the
TLB entry on all CPUs using smp_rendezvous(), we can just update the
TLB entry on the current CPU, and let the other CPUs update their TLB
entry lazily if they get an exception.

Reviewed by:	alc, neel

END