linux-kernel - Re: [PATCH] clear irq pending when bypassing it

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Date:	Thu, 30 Apr 2009 09:49:39 -0700
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Joe Korty <joe.korty@...r.com>
Cc:	venkatesh.pallipadi@...el.com, mingo@...e.hu,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] clear irq pending when bypassing it

Joe Korty <jak@...hoon.ccur.com> writes:

> IRQ_MOVE_PENDING must be cleared whenever it is bypassed.
>
> Otherwise, we risk an old, pending affinity change
> overtaking and erasing a more recent affinity change that
> had been directly applied (eg, IRQ_MOVE_PCNTXT mode).

When can this happen?

Eric
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