linux-kernel - Re: [PATCH 1/3] irq_domain: remove "hint" when allocating irq numbers

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Message-ID: <CACxGe6tAu8ZR7S4qqWGWaKjRQ-vZemwXoso8T=noRstkuXmgXg@mail.gmail.com>
Date:	Wed, 11 Apr 2012 18:11:11 -0600
From:	Grant Likely <grant.likely@...retlab.ca>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	Milton Miller <miltonm@....com>,
	Olof Johansson <olof@...om.net>
Subject: Re: [PATCH 1/3] irq_domain: remove "hint" when allocating irq numbers

On Wed, Apr 11, 2012 at 5:44 PM, Benjamin Herrenschmidt
<benh@...nel.crashing.org> wrote:
> On Wed, 2012-04-11 at 17:18 -0600, Grant Likely wrote:
>> The 'hint' used to try and line up irq numbers with hw irq numbers is
>> rather a hack and not very useful.  It also had some value when irq
>> reverse mapping was lazy, and not done right at map time.  However, the
>> lazy mapping is to be removed, so keeping around 'hint' isn't helpful
>> anymore.  This patch removes it.
>
> Please document that this also removes the support for irq_virq_count,
> which breaks PS3, to be "fixed" by your patch 3/3 (you may want to
> re-order the patches here) and that fixes an actual bug with mapping of
> interrupts above NR_IRQS

Yes, I'll either fix this patch or reorder before merging.

g.
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