---1247997369-1788761421-895140129=:14525
Content-Type: TEXT/PLAIN; charset=US-ASCII
On Thu, 14 May 1998, Harald Hoyer wrote:
> But not this one, if this is a typo:
>
> - irq_desc[i].handler = &ioapic_level_irq_type;
> + irq_desc[i].handler = &ioapic_edge_irq_type;
no, it's not a typo, it's in the announcement -F, it's a debugging
thing:). We can handle edge triggered IRQs with the new level-triggered
handler. But this does not mean we set it up as level-triggered. If you
think about it, it's valid, but suboptimal for edge-triggered IRQs. But i
wanted to test the new level-triggered part, the edge triggered stuff was
working almost always.
> Besides that the -F and -I patch break serial interrupts, after
> switching console from svga-apps or X-Server on my computer. Only one
> interrupt is served in 2 seconds. pre-2.1.102 works fine...
yes, this is already fixed in io-apic-patch-2.1.101-J. The problem was
setup_x86_irq()/free_irq(), they have to atomically change irq
descriptors, and they have to mask/umask IRQs properly.
this fix also has a chance to fix other problems, most notably maybe the
'double IRQs on NE2000' problem, and/or the BusLogic boot-hang? Please
re-report if there are still problems. The io-apic-patch-2.1.101-J patch
is against vanilla pre-patch-2.1.102.
-- mingo
---1247997369-1788761421-895140129=:14525
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