On 04/24/2011 03:24 PM, Jan Kiszka wrote:
> > This would cause IRQs to be delivered even if the PIT is masked, no? I checked the patch and our code again: NMI watchdog masking is managed via arch.vapics_in_nmi_mode and by re-checking the per-APIC mask situation in kvm_apic_local_deliver when delivering the NMI. So the patch looks correct - NMIs aren't acked like timer IRQs, the current logic is definitely wrong.
Can you elaborate? Why aren't NMIs acked (if delivered via the PIC)? Is the PIC programmed into auto-EOI mode or something?
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