From: William Lee Irwin III <wli@holomorphy.com>
To: Andrew Morton <akpm@digeo.com>
Cc: Keith Mannthey <kmannth@us.ibm.com>, linux-kernel@vger.kernel.org
Subject: Re: [RFC] clustered apic irq affinity fix for i386
Date: Wed, 30 Apr 2003 19:49:48 -0700 [thread overview]
Message-ID: <20030501024948.GF8978@holomorphy.com> (raw)
In-Reply-To: <20030430192205.13491d61.akpm@digeo.com>
On Wed, Apr 30, 2003 at 07:22:05PM -0700, Andrew Morton wrote:
> Is it not possible to fix set_ioapic_affinity() for real for clustered APIC
> mode? What is involved in that?
The clustered hierarchical destination format formats destinations as
bits | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
--------------------------------------
| cluster id no | local cpumask |
--------------------------------------
which can only describe 15*16 of the 2**60 nonempty subsets of 60 cpus.
-- wli
next prev parent reply other threads:[~2003-05-01 2:37 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-30 23:07 [RFC] clustered apic irq affinity fix for i386 Keith Mannthey
2003-04-30 23:36 ` Andrew Morton
2003-05-01 1:05 ` Keith Mannthey
2003-05-01 2:22 ` Andrew Morton
2003-05-01 2:49 ` William Lee Irwin III [this message]
2003-05-01 4:07 ` Martin J. Bligh
2003-05-01 17:51 ` Keith Mannthey
2003-05-06 0:04 ` [RFC][PATCH] fix for clusterd io_apics Keith Mannthey
2003-05-06 15:15 ` Martin J. Bligh
2003-05-01 9:10 ` [RFC] clustered apic irq affinity fix for i386 Arjan van de Ven
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