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Date: Fri, 18 May 2007 10:30:08 -0700
From: "Yinghai Lu" <yhlu.kernel@gmail.com>
To: "Eric W. Biederman" <ebiederm@xmission.com>
Subject: Re: [patch] x86_64, irq: check remote IRR bit before migrating level triggered irq
Cc: "Siddha, Suresh B" <suresh.b.siddha@intel.com>, mingo@elte.hu, ak@suse.de,
       akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
       "Zou, Nanhai" <nanhai.zou@intel.com>,
       "Mallick, Asit K" <asit.k.mallick@intel.com>,
       "Packard, Keith" <keith.packard@intel.com>
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Eric,

ioapic_level irq is limited, So if we keep vector number not changed
when imgration to other cpus.  It that could help.

it will need modify a little with assign_irq_vector and
irq_complete_move/smp_irq_move_cleanup_interrupt. because it assume
vector must be changed.

YH