From: David S. Miller <davem@sunset.davemloft.net>
Date: Wed, 8 Feb 2006 10:53:50 +0000 (-0800)
Subject: [SPARC64]: Sun4v interrupt handling.
X-Git-Tag: v2.6.17-rc1~1184^2~174
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5b0c0572fcd6204675c5f7ddfa572b5017f817dd;p=pandora-kernel.git

[SPARC64]: Sun4v interrupt handling.

Sun4v has 4 interrupt queues: cpu, device, resumable errors,
and non-resumable errors.  A set of head/tail offset pointers
help maintain a work queue in physical memory.  The entries
are 64-bytes in size.

Each queue is allocated then registered with the hypervisor
as we bring cpus up.

The two error queues each get a kernel side buffer that we
use to quickly empty the main interrupt queue before we
call up to C code to log the event and possibly take evasive
action.

Signed-off-by: David S. Miller <davem@davemloft.net>
---

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