diff options
Diffstat (limited to 'hw/intc/apic.c')
-rw-r--r-- | hw/intc/apic.c | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/hw/intc/apic.c b/hw/intc/apic.c index 03ff9e94f2..0f97b47925 100644 --- a/hw/intc/apic.c +++ b/hw/intc/apic.c @@ -188,7 +188,7 @@ void apic_deliver_pic_intr(DeviceState *dev, int level) apic_reset_bit(s->irr, lvt & 0xff); /* fall through */ case APIC_DM_EXTINT: - cpu_reset_interrupt(CPU(s->cpu), CPU_INTERRUPT_HARD); + apic_update_irq(s); break; } } @@ -349,6 +349,11 @@ static int apic_get_arb_pri(APICCommonState *s) static int apic_irq_pending(APICCommonState *s) { int irrv, ppr; + + if (!(s->spurious_vec & APIC_SV_ENABLE)) { + return 0; + } + irrv = get_highest_priority_int(s->irr); if (irrv < 0) { return 0; @@ -366,14 +371,13 @@ static void apic_update_irq(APICCommonState *s) { CPUState *cpu; - if (!(s->spurious_vec & APIC_SV_ENABLE)) { - return; - } cpu = CPU(s->cpu); if (!qemu_cpu_is_self(cpu)) { cpu_interrupt(cpu, CPU_INTERRUPT_POLL); } else if (apic_irq_pending(s) > 0) { cpu_interrupt(cpu, CPU_INTERRUPT_HARD); + } else if (!apic_accept_pic_intr(&s->busdev.qdev) || !pic_get_output(isa_pic)) { + cpu_reset_interrupt(cpu, CPU_INTERRUPT_HARD); } } @@ -567,7 +571,10 @@ int apic_get_interrupt(DeviceState *dev) apic_sync_vapic(s, SYNC_FROM_VAPIC); intno = apic_irq_pending(s); - if (intno == 0) { + /* if there is an interrupt from the 8259, let the caller handle + * that first since ExtINT interrupts ignore the priority. + */ + if (intno == 0 || apic_check_pic(s)) { apic_sync_vapic(s, SYNC_TO_VAPIC); return -1; } else if (intno < 0) { @@ -578,9 +585,6 @@ int apic_get_interrupt(DeviceState *dev) apic_set_bit(s->isr, intno); apic_sync_vapic(s, SYNC_TO_VAPIC); - /* re-inject if there is still a pending PIC interrupt */ - apic_check_pic(s); - apic_update_irq(s); return intno; |