K 10
svn:author
V 6
cherry
K 8
svn:date
V 27
2013-04-30T05:39:42.767823Z
K 7
svn:log
V 226
On Xen, %fs and %gs are set via hypercalls.
We thus set the %fs and %gs selectors to 0
and ignore trapframe values on return to userspace.
Userspace sets %fs via sysarch(2), and the kernel dtrt.

Approved by: gibbs (implicit)

END