From: Christoph Hellwig <hch@lst.de>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linuxppc-dev list <linuxppc-dev@ozlabs.org>,
Paul Mackerras <paulus@samba.org>,
"cbe-oss-dev@ozlabs.org" <cbe-oss-dev@ozlabs.org>,
Arnd Bergmann <arnd@arndb.de>
Subject: Re: [PATCH] Cell interrupt rework (final)
Date: Sat, 7 Oct 2006 10:55:24 +0200 [thread overview]
Message-ID: <20061007085524.GA3421@lst.de> (raw)
In-Reply-To: <1159506029.15792.18.camel@localhost.localdomain>
On Fri, Sep 29, 2006 at 03:00:29PM +1000, Benjamin Herrenschmidt wrote:
> This patch reworks the cell iic interrupt handling so that:
>
> - Node ID is back in the interrupt number (only one IRQ host is created
> for all nodes). This allows interrupts from sources on another node to
> be routed non-locally. This will allow possibly one day to fix maxcpus=1
> or 2 and still get interrupts from devices on BE 1. (A bit more fixing
> is needed for that) and it will allow us to implement actual affinity
> control of external interrupts.
>
> - Added handling of the IO exceptions interrupts (badly named, but I
> re-used the name initially used by STI). Those are the interrupts
> exposed by IIC_ISR and IIC_IRR, such as the IOC translation exception,
> performance monitor, etc... Those get their special numbers in the IRQ
> number space and are internally implemented as a cascade on unit 0xe,
> class 1 of each node.
Looks good to me.
prev parent reply other threads:[~2006-10-07 8:55 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-29 5:00 [PATCH] Cell interrupt rework (final) Benjamin Herrenschmidt
2006-09-29 7:51 ` Arnd Bergmann
2006-10-07 8:55 ` Christoph Hellwig [this message]
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