On 2013-03-17 09:47, Gleb Natapov wrote: > On Sat, Mar 16, 2013 at 09:49:07PM +0100, Jan Kiszka wrote: >> From: Jan Kiszka <jan.kiszka@xxxxxxxxxxx> >> >> If the guest didn't take the last APIC timer interrupt yet and generates >> another one on top, e.g. via periodic mode, we do not block the VCPU >> even if the guest state is halted. The reason is that >> apic_has_pending_timer continues to return a non-zero value. >> >> Fix this busy loop by taking the IRR content for the LVT vector in >> apic_has_pending_timer into account. >> > Just drop coalescing tacking for lapic interrupt. After posted interrupt > will be merged __apic_accept_irq() will not longer return coalescing > information, so the code will be dead anyway. That requires the RTC decoalescing series to go first to avoid a regression, no? Then let's postpone this topic for now. Jan
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