Jung-uk Kim 9bfb10b154 Re-implement FPU suspend/resume for amd64. This removes superfluous uses
of critical_enter(9) and critical_exit(9) by fpugetregs() and fpusetregs().
Also, we do not touch PCB flags any more.

MFC after:	1 month
2010-07-26 19:53:09 +00:00
..
2010-07-24 23:41:09 +00:00
2010-07-25 02:22:32 +00:00
2010-07-23 11:00:46 +00:00