linux-kernel - Re: [RFC PATCH 5/8] AMP: smp: Extend number of IPIs

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Message-ID: <20120618113548.GE12029@n2100.arm.linux.org.uk>
Date:	Mon, 18 Jun 2012 12:35:48 +0100
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Michal Simek <monstr@...str.eu>
Cc:	linux-kernel@...r.kernel.org, Marc Zyngier <marc.zyngier@....com>,
	Grant Likely <grant.likely@...retlab.ca>,
	Will Deacon <will.deacon@....com>,
	Rob Herring <rob.herring@...xeda.com>,
	Nicolas Pitre <nicolas.pitre@...aro.org>,
	linux-arm-kernel@...ts.infradead.org,
	Ohad Ben-Cohen <ohad@...ery.com>,
	Peter Crosthwaite <peter.crosthwaite@...alogix.com>
Subject: Re: [RFC PATCH 5/8] AMP: smp: Extend number of IPIs

On Mon, Jun 18, 2012 at 01:30:08PM +0200, Michal Simek wrote:
> GIC supports up to 16 IPIs.
> 
> Signed-off-by: Michal Simek <monstr@...str.eu>
> 
> ---
> Please correct me if this code is also designed for different
> interrupt controller which doesn't support 16 IPIs.

This code is not specific to the GIC.  We use NR_IPI to indicate the
number of IPIs that the kernel actually uses, not the number which the
hardware provides.
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