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enable_lapic_timer
2008 Sep 09
9
[PATCH 2/4] CPUIDLE: Avoid remnant LAPIC timer intr while force hpetbroadcast
CPUIDLE: Avoid remnant LAPIC timer intr while force hpetbroadcast
LAPIC will stop during C3, and resume to work after exit from C3. Considering below case:
The LAPIC timer was programmed to expire after 1000us, but CPU enter C3 after 100us and exit C3 at 9xxus.
0us: reprogram_timer(1000us)
100us: entry C3, LAPIC timer stop
9xxus: exit C3 due to unexpected event, LAPIC timer continue running