K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2008-09-02T17:52:11.840436Z
K 7
svn:log
V 628
- When executing FreeBSD/amd64 binaries from FreeBSD/i386 or Linux/i386
  processes, clear PCB_32BIT and PCB_GS32BIT bits [1].

- Reread the fs and gs bases from the msr unconditionally, not believing
  the values in pcb_fsbase and pcb_gsbase, since usermode may reload
  segment registers, invalidating the cache. [2].

Both problems resulted in the wrong fs base, causing wrong tls pointer
be dereferenced in the usermode.

Reported and tested by:	Vyacheslav Bocharov <adeepv at gmail com> [1]
Reported by:	Bernd Walter <ticsoat cicely7 cicely de>,
	Artem Belevich <fbsdlist at src cx>[2]
Reviewed by:	peter
MFC after:	3 days

END