On 6/13/15 10:01 PM, O'Connor, Daniel wrote:
On 13 Jun 2015, at 09:17, Julian Elischer <jul...@freebsd.org> wrote:
could it be that more than one CPUs get the NMI at the same time?
i guess, its possible. is there an easy way to check for that?
hard code checks in the code so that all except the first do something
different.
(even only as a debug check).. like write to some location and loop...
How about just something to the effect of..
if (curcpu != cpu0)
while (1)
;
well, use 'pause' in the loop to save power. or even halt maybe..
(whatever the idle loop uses)
and write something to an array ( stopped_by_nmi[curcpu-index] ) on
entering the code
so the base processor can see what processors entered it.
(names not correct)
--
Daniel O'Connor
"The nice thing about standards is that there
are so many of them to choose from."
-- Andrew Tanenbaum
GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
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