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Date: Sun, 17 Oct 2004 14:27:06 +0200
From: Pierre Ossman <drzeus-list@drzeus.cx>
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Subject: IO-APIC missing interrupts
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I'm having some problems with the IO-APIC on a Acer Aspire 1501LMI 
laptop (AMD64). When the IO-APIC is enabled it misses some interrupts. 
Using noapic makes everything work fine.

The problem appears during fifo transfers when interrupts are frequent. 
My guess is that if a new interrupt is signaled while still in the 
interrupt handler, the new interrupt gets ignored.

The device in question is a LPC/ISA device.

Are there perhaps some special commands that need to be executed by the 
driver when on an APIC system?

Rgds
Pierre