K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2008-08-15T09:08:35.264513Z
K 7
svn:log
V 605
MFC r177535 by peter:
(Micro)optimization of cpu_switch for amd64.
Because r173004 (pure kernel threads) is not MFCed to stable/7, I use
P_KTHREAD flag from curthread->td_proc->p_flag instead of TDP_KTHREAD
flag from curthread->td_pflags to test whether the fs/gs bases need to
be restored [1].

No objections for MFC from:	peter
Suggested by:	jhb [1]

MFC r180992:
Bring back the save/restore of the %ds, %es, %fs and %gs registers for
the 32bit images on amd64.

The end result is almost complete syncronization of the
amd64/amd64/cpu_switch.S between head and stable/7, besides TDP_KTHREAD
difference.

END