diff options
| -rw-r--r-- | hw/intc/loongarch_pch_pic.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/hw/intc/loongarch_pch_pic.c b/hw/intc/loongarch_pch_pic.c index 9208fc4460..6aa4cadfa4 100644 --- a/hw/intc/loongarch_pch_pic.c +++ b/hw/intc/loongarch_pch_pic.c @@ -30,7 +30,11 @@ static void pch_pic_update_irq(LoongArchPCHPIC *s, uint64_t mask, int level) qemu_set_irq(s->parent_irq[s->htmsi_vector[irq]], 1); } } else { - val = mask & s->intisr; + /* + * intirr means requested pending irq + * do not clear pending irq for edge-triggered on lowering edge + */ + val = mask & s->intisr & ~s->intirr; if (val) { irq = ctz64(val); s->intisr &= ~MAKE_64BIT_MASK(irq, 1); @@ -51,6 +55,7 @@ static void pch_pic_irq_handler(void *opaque, int irq, int level) /* Edge triggered */ if (level) { if ((s->last_intirr & mask) == 0) { + /* marked pending on a rising edge */ s->intirr |= mask; } s->last_intirr |= mask; |