From: Andi Kleen <ak@suse.de>
To: "Eric W. Biederman" <ebiederm@xmission.com>
Subject: Re: [PATCH 2/2] x86_64 irq:  Handle irqs pending in IRR during irq migration.
Date: Sat, 3 Feb 2007 11:26:01 +0100
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Cc: Andrew Morton <akpm@osdl.org>, linux-kernel@vger.kernel.org,
       "Lu, Yinghai" <yinghai.lu@amd.com>,
       "Luigi Genoni" <luigi.genoni@pirelli.com>, Ingo Molnar <mingo@elte.hu>,
       Natalie Protasevich <protasnb@gmail.com>
References: <200701221116.13154.luigi.genoni@pirelli.com> <200702031101.22313.ak@suse.de> <m1wt2z1qxi.fsf@ebiederm.dsl.xmission.com>
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On Saturday 03 February 2007 11:22, Eric W. Biederman wrote:
> Andi Kleen <ak@suse.de> writes:
> 
> >> Once the migration operation is complete we know we will receive
> >> no more interrupts on this vector so the irq pending state for
> >> this irq will no longer be updated.  If the irq is not pending and
> >> we are in the intermediate state we immediately free the vector,
> >> otherwise in we free the vector in do_IRQ when the pending irq
> >> arrives.
> >
> > Ok for me, although the magic numbers are a little nasty.
> 
> You must be talking about (vector/32) *0x10.

No I meant the -1s

-Andi
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