Don't clear interrupts on disabling, because
* Sun4M_SystemArchitecture_edited2.pdf doesn't describe
that masking or un-masking IRQ shall clear pending ones.
* Field tests also show that SPARCstation-20 doesn't
clear them.
* The patch makes Solaris 2.5.1/2.6 boot ~1500 times
faster (~20 seconds instead of ~8 hours)
Signed-off-by: Artyom Tarasenko <atar4qemu@gmail.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
s->intregm_disabled);
slavio_check_interrupts(s, 1);
break;
- case 3: // set (disable, clear pending)
+ case 3: // set (disable; doesn't affect pending)
// Force clear unused bits
val &= MASTER_IRQ_MASK;
s->intregm_disabled |= val;
- s->intregm_pending &= ~val;
slavio_check_interrupts(s, 1);
DPRINTF("Disabled master irq mask %x, curmask %x\n", val,
s->intregm_disabled);