[Qemu-devel] [PATCH] RTC dyntick

[Anders Melchiorsen]

Hello.

This patch stops the qemu seconds timer when the RTC is not used. Once
the cmos is accessed, the skipped seconds are accounted for, and the
timer is enabled again.

In case interrupts are to be delivered, the timer is not disabled.


I have obviously gone mad from staring too much at PowerTOP, as this
really is a micro-optimization. On the other hand, this change
eliminates the last host-induced periodic timer in my kvm setup, so it
seems worth the trouble.

Please comment, does it make sense?


Anders.

qemu-rtc-dyntick.diff
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