bad awk output on vkernel
Matthew Dillon
dillon at apollo.backplane.com
Fri Oct 2 16:04:26 PDT 2009
Problem solved!
The recent work on the vkernel which enabled preemptive thread
switching introduced a race condition in go_user() between the
determination of the FP state and the call to vmspace_ctl().
The FP state could wind up getting changed by a preemptive thread
switch and result in corruption of the FP state in the virtual
user process when vmspace_ctl() was finally called.
-Matt
Matthew Dillon
<dillon at backplane.com>
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