From: ebiederm@xmission.com (Eric W. Biederman)
To: Dimitri Sivanich <sivanich@sgi.com>
Cc: Ingo Molnar <mingo@elte.hu>,
Suresh Siddha <suresh.b.siddha@intel.com>,
Yinghai Lu <yinghai@kernel.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v6] x86/apic: limit irq affinity
Date: Sat, 21 Nov 2009 10:49:50 -0800 [thread overview]
Message-ID: <m1r5rrr9v5.fsf@fess.ebiederm.org> (raw)
In-Reply-To: <20091120211139.GB19106@sgi.com> (Dimitri Sivanich's message of "Fri\, 20 Nov 2009 15\:11\:39 -0600")
Dimitri Sivanich <sivanich@sgi.com> writes:
> This patch allows for hard numa restrictions to irq affinity on x86 systems.
>
> Affinity is masked to allow only those cpus which the subarchitecture
> deems accessible by the given irq.
>
> On some UV systems, this domain will be limited to the nodes accessible
> to the irq's node. Initially other X86 systems will not mask off any cpus
> so non-UV systems will remain unaffected.
Is this a hardware restriction you are trying to model?
If not this seems wrong.
Eric
next prev parent reply other threads:[~2009-11-21 18:49 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-20 21:11 [PATCH v6] x86/apic: limit irq affinity Dimitri Sivanich
2009-11-21 18:49 ` Eric W. Biederman [this message]
2009-11-22 1:14 ` Dimitri Sivanich
2009-11-24 13:20 ` Thomas Gleixner
2009-11-24 13:39 ` Peter Zijlstra
2009-11-24 13:55 ` Thomas Gleixner
2009-11-24 14:50 ` Arjan van de Ven
2009-11-24 17:41 ` Eric W. Biederman
2009-11-24 18:00 ` Peter P Waskiewicz Jr
2009-11-24 18:20 ` Ingo Molnar
2009-11-24 18:27 ` Yinghai Lu
2009-11-24 18:32 ` Peter Zijlstra
2009-11-24 18:59 ` Yinghai Lu
2009-11-24 21:41 ` Dimitri Sivanich
2009-11-24 21:51 ` Thomas Gleixner
2009-11-24 23:06 ` Eric W. Biederman
2009-11-25 1:23 ` Thomas Gleixner
2009-11-24 22:42 ` Eric W. Biederman
2009-11-25 15:40 ` Arjan van de Ven
2009-12-03 16:50 ` Dimitri Sivanich
2009-12-03 16:53 ` Waskiewicz Jr, Peter P
2009-12-03 17:01 ` Dimitri Sivanich
2009-12-03 17:07 ` Waskiewicz Jr, Peter P
2009-12-03 17:19 ` Dimitri Sivanich
2009-12-03 18:50 ` Waskiewicz Jr, Peter P
2009-12-04 16:42 ` Dimitri Sivanich
2009-12-04 21:17 ` Peter P Waskiewicz Jr
2009-12-04 23:12 ` Eric W. Biederman
2009-12-05 10:38 ` Peter P Waskiewicz Jr
2009-12-07 13:44 ` Dimitri Sivanich
2009-12-07 13:39 ` Dimitri Sivanich
2009-12-07 23:28 ` Peter P Waskiewicz Jr
2009-12-08 15:04 ` Dimitri Sivanich
2009-12-11 3:16 ` david
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