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Re: [Xen-devel] Re: [PATCH 1/5] xen: events: use irq_alloc_desc(_at) ins

from [Jeremy Fitzhardinge] [Permanent Link][Original]
To: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Subject: Re: [Xen-devel] Re: [PATCH 1/5] xen: events: use irq_alloc_desc(_at) instead of open-coding an IRQ allocator.
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Date: Fri, 29 Oct 2010 09:16:56 -0700
Cc: Ian Campbell <Ian.Campbell@xxxxxxxxxxxxx>, Sander Eikelenboom <linux@xxxxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Konrad@xxxxxxxxxxxxxxxxxxxx, Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
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 On 10/29/2010 08:51 AM, Konrad Rzeszutek Wilk wrote:
>> In this case it should be sufficient to keep using pirq == gsi for
>> gsi < 16.
> So we would still need our own interrupt allocation mechanism to
> deal with this then.

Well, only minimally.  The core interrupt allocator never returns irqs <
16, so we're free to directly use them.

    J

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