thorpej 2c3dc83a64 Keep interrupt-safe maps on an additional queue. In uvm_fault(), if we're
looking up a kernel address, check to see if the address is on this
"interrupt-safe" list.  If so, return failure immediately.  This prevents
a locking screw if a page fault is taken on an interrupt-safe map in or
out of interrupt context.
1999-06-04 23:38:41 +00:00
1999-06-04 10:34:54 +00:00
1999-05-31 14:52:11 +00:00
1999-06-02 15:57:18 +00:00
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