Author: nwhitehorn
Date: Sat Nov 25 22:43:52 2017
New Revision: 326216
URL: https://svnweb.freebsd.org/changeset/base/326216
Log:
On AIM systems, it is not actually possible to stop the CPU timer, so we
just set it to a large default value (and inherit any previously existing
value), hoping it never turns over. Instead, silently allow spurious
one-shots from rollovers.
MFC after: 10 days
Modified:
head/sys/powerpc/powerpc/clock.c
Modified: head/sys/powerpc/powerpc/clock.c
==============================================================================
--- head/sys/powerpc/powerpc/clock.c Sat Nov 25 22:42:05 2017
(r326215)
+++ head/sys/powerpc/powerpc/clock.c Sat Nov 25 22:43:52 2017
(r326216)
@@ -141,6 +141,9 @@ decr_intr(struct trapframe *frame)
} else if (s->mode == 2) {
nticks = 1;
decr_et_stop(NULL);
+ } else if (s->mode == 0) {
+ /* Potemkin timer ran out without an event. Just reset it. */
+ decr_et_stop(NULL);
}
while (nticks-- > 0) {
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