Use a temp process for test_uaccess
authorBarret Rhoden <brho@cs.berkeley.edu>
Thu, 10 Dec 2015 16:19:30 +0000 (11:19 -0500)
committerBarret Rhoden <brho@cs.berkeley.edu>
Thu, 10 Dec 2015 16:19:30 +0000 (11:19 -0500)
The usage of switch_to(0) is a little problematic.  This way, we just have
a temp process and can control its address space for the tests.

Signed-off-by: Barret Rhoden <brho@cs.berkeley.edu>

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