From 9250fd24a98af75f196480a75aacf99291ef46a9 Mon Sep 17 00:00:00 2001 From: Alexander Graf Date: Sat, 23 Jul 2011 11:05:35 +0200 Subject: [PATCH] PPC: Set MPIC IDE for IPI to 0 We use the IDE register with IPIs as a mask to keep track which processors have already acknowledged the respective interrupt. So we need to initialize it to 0 to make sure that it doesn't accidently fire an IPI on CPU0 when the first IPI is triggered. Reported-by: Elie Richa Signed-off-by: Alexander Graf --- v2 -> v3: - fix IDE IPI reset --- hw/openpic.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/hw/openpic.c b/hw/openpic.c index 9710ac0b30..31ad1751fe 100644 --- a/hw/openpic.c +++ b/hw/openpic.c @@ -1299,6 +1299,10 @@ static void mpic_reset (void *opaque) mpp->src[i].ipvp = 0x80800000; mpp->src[i].ide = 0x00000001; } + /* Set IDE for IPIs to 0 so we don't get spurious interrupts */ + for (i = mpp->irq_ipi0; i < (mpp->irq_ipi0 + MAX_IPI); i++) { + mpp->src[i].ide = 0; + } /* Initialise IRQ destinations */ for (i = 0; i < MAX_CPU; i++) { mpp->dst[i].pctp = 0x0000000F;