On 06/09/2010 04:49 PM, Marcelo Tosatti wrote:
Certain guests do not compensate for lost ticks (older RHEL3 for ex), and this completly reinjection. Perhaps you can increase the pending counter on pit_timer_fn, and reinject on ACK? Also, due to http://www.mail-archive.com/kvm-devel@xxxxxxxxxxxxxxxxxxxxx/msg13250.html, it should be safer to keep PIT locked to vcpu0 if IOAPIC dest mode is lowprio.
Yes. We don't actually need to lock the PIT to vcpu 0, instead just make sure the lowprio selection picks vcpu 0 for irq 0/2.
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