From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Anton Blanchard <anton@samba.org>
Cc: linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH 2/3] powerpc: Add form 1 NUMA affinity
Date: Fri, 30 Apr 2010 17:24:59 +1000 [thread overview]
Message-ID: <1272612299.13814.0.camel@pasglop> (raw)
In-Reply-To: <20100430043407.GC4622@kryten>
On Fri, 2010-04-30 at 14:34 +1000, Anton Blanchard wrote:
> Firmware changed the way it represents memory and cpu affinity on POWER7.
> Unfortunately the old method now caps the topology to work around issues
> with legacy operating systems. For Linux to get the correct topology we
> need to use the new form 1 affinity information.
>
> We set the form 1 field in the client architecture, and if we see "1" in the
> ibm,associativity-form property firmware supports form 1 affinity and
> we should look at the first field in the ibm,associativity-reference-points
> array. If not we use the second field as we always have.
>
> Signed-off-by: Anton Blanchard <anton@samba.org>
> ---
I sent your previous version of that one to Linus, it's already up. Can
you check it's allright ?
Cheers,
Ben.
next prev parent reply other threads:[~2010-04-30 7:25 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-30 4:33 [PATCH 1/3] powerpc: Set a smaller value for RECLAIM_DISTANCE to enable zone reclaim Anton Blanchard
2010-04-30 4:34 ` [PATCH 2/3] powerpc: Add form 1 NUMA affinity Anton Blanchard
2010-04-30 4:43 ` [PATCH 3/3] powerpc: Use form 1 affinity to setup node distance Anton Blanchard
2010-05-06 6:50 ` Benjamin Herrenschmidt
2010-04-30 7:24 ` Benjamin Herrenschmidt [this message]
2010-04-30 7:33 ` [PATCH 2/3] powerpc: Add form 1 NUMA affinity Anton Blanchard
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