On Thu, May 02, 2013 at 10:14:32PM -0300, Marcelo Tosatti wrote: > On Sun, Apr 28, 2013 at 02:00:41PM +0200, Jan Kiszka wrote: > > From: Jan Kiszka <jan.kiszka@xxxxxxxxxxx> > > > > Since the arrival of posted interrupt support we can no longer guarantee > > that coalesced IRQs are always reported to the IRQ source. Moreover, > > accumulated APIC timer events could cause a busy loop when a VCPU should > > rather be halted. The consensus is to remove coalesced tracking from the > > LAPIC. > > > > Signed-off-by: Jan Kiszka <jan.kiszka@xxxxxxxxxxx> > > --- > > > > Changes in v2: > > - preserve return values where we need to count to how many VCPUs an > > IRQ was delivered > > It would be best to confirm first that no guest depends on LAPIC timer > reinjection (rather than wait for guests to break and spend time > debugging). Specially since such kind of bugs are not easy to pinpoint. > Or if there is evidence to invalidate such reasoning, please point it > out. > > Honestly i don't recall: would have to check RHEL5.32 UP/SMP, RHEL5.64 > UP/SMP, RHEL4.32, RHEL4.64, RHEL6. Can do that in a week or so. Its OK to remove LAPIC timer reinjection. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
