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-rw-r--r--sys/isa/atrtc.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/isa/atrtc.c b/sys/isa/atrtc.c
index a67db31..f31c7ea 100644
--- a/sys/isa/atrtc.c
+++ b/sys/isa/atrtc.c
@@ -291,6 +291,7 @@ DELAY(int n)
start = rdtsc();
end = start + (tsc_freq * n) / 1000000;
do {
+ cpu_spinwait();
now = rdtsc();
} while (now < end || (now > start && end < start));
sched_unpin();
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