Peter Wemm writes:
 > Eww!  Care to confirm that the following works?  I was going to just commit
 > it since it is pretty obvious, but a brief sanity check would probably
 > be an idea.  (beware, xterm cut/paste whitespace damage).
 > 
 > ddb runs with interrupts disabled and the other cpus halted.  We could not
 > get the 'ack' from the IPI.  The panic was real - you'd have locked up hard
 > if it had not triggered.
 > 
 > db_write_bytes temporarily changes a local cpu mapping and changes it back
 > while everything else is frozen.  We do not need to do a coherent invalidate.

That seems to work. Thanks!

Drew

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