* IO-APIC missing interrupts
@ 2004-10-17 12:27 Pierre Ossman
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From: Pierre Ossman @ 2004-10-17 12:27 UTC (permalink / raw)
To: LKML
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
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2004-10-17 12:27 IO-APIC missing interrupts Pierre Ossman
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