From: "Jarrett L. Redd" <jredd@cisco.com>
To: linux-smp@vger.kernel.org
Subject: occasional kernel hang inside apic_wait_icr_idle()...
Date: Wed, 17 Jul 2002 16:05:17 -0700 [thread overview]
Message-ID: <3D35F82D.2030801@cisco.com> (raw)
Hey guys/gals... I have a custom hardware board that seems to be running
fine with 2.4.17 in uniprocessor IOAPIC mode (we are receiving
interrupts), but occasionally we hang during boot inside sync_Arb_IDs()
when it calls apic_wait_icr_idle(). We are using the serverworks HE
chipset with 3 embedded IOAPICS, and what I see when we hang is that the
APIC ICR register is 0xcd624 (indeed the BUSY bit is set forever).
Unfortunately, I do not know a whole lot about APICs/IOAPICs/etc. The
documentation we have (poor at best) says this bit gets set when there
is a transaction pending. I'm not sure exactly what this means. Does
anyone out there have any idea what might be causing this? Is it a
spurious interrupt during boot perhaps? Thanks VERY MUCH in advance.
-Jarrett Redd
reply other threads:[~2002-07-17 23:05 UTC|newest]
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