From: Pierre Ossman <drzeus-list@drzeus.cx>
To: LKML <linux-kernel@vger.kernel.org>
Subject: IO-APIC missing interrupts
Date: Sun, 17 Oct 2004 14:27:06 +0200 [thread overview]
Message-ID: <4172651A.3010406@drzeus.cx> (raw)
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
reply other threads:[~2004-10-17 12:27 UTC|newest]
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