From: Andi Kleen <ak@suse.de>
To: Martin Wilck <martin.wilck@fujitsu-siemens.com>
Cc: linux-kernel@vger.kernel.org, "Wichert,
Gerhard" <Gerhard.Wichert@fujitsu-siemens.com>
Subject: Re: APIC version and 8-bit APIC IDs
Date: Wed, 31 Aug 2005 16:40:27 +0200 [thread overview]
Message-ID: <200508311640.27795.ak@suse.de> (raw)
In-Reply-To: <4315AD07.2020500@fujitsu-siemens.com>
On Wednesday 31 August 2005 15:13, Martin Wilck wrote:
> In other words: What would be broken if we just used an APIC ID mask of
> 0xFF everywhere?
Nothing I think. It's more historical reasons. The physflat subarchitecture
patch essentially removed it, but it needs some rework and merging
with bigsmp now.
> The current situation with MP_valid_apicid() on the one hand (masking
> the APIC ID as a function of local APIC version) and APIC_ID_MASK
> (masking the APIC as a function of subarch) on the other hand is
> inconsistent. A correct approach must take both CPU and architecture
> constraints into account, and use a CPU-type-dependent variable mask in
> the subarch code.
Yes, it's broken right now.
-Andi
next prev parent reply other threads:[~2005-08-31 14:40 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <42FC8461.2040102@fujitsu-siemens.com.suse.lists.linux.kernel>
2005-08-12 11:43 ` APIC version and 8-bit APIC IDs Andi Kleen
2005-08-12 13:21 ` Martin Wilck
2005-08-12 13:32 ` Andi Kleen
2005-08-12 13:51 ` Martin Wilck
2005-08-12 14:55 ` Martin Wilck
2005-08-12 14:57 ` Andi Kleen
2005-08-12 16:37 ` yhlu
2005-08-12 16:42 ` Andi Kleen
2005-08-12 17:44 ` yhlu
2005-08-22 9:50 ` Martin Wilck
2005-08-23 11:10 ` Maciej W. Rozycki
2005-08-26 14:01 ` Martin Wilck
2005-08-26 14:50 ` Maciej W. Rozycki
2005-08-29 7:25 ` Martin Wilck
2005-08-12 18:19 ` Siddha, Suresh B
2005-08-12 18:22 ` Andi Kleen
2005-08-12 18:40 ` Siddha, Suresh B
2005-08-12 18:50 ` Andi Kleen
2005-08-31 13:13 ` Martin Wilck
2005-08-31 13:25 ` Maciej W. Rozycki
2005-08-31 14:27 ` Martin Wilck
[not found] ` <4315B2D9.6080700@fujitsu-siemens.com>
[not found] ` <Pine.LNX.4.61L.0508311450020.10940@blysk.ds.pg.gda.pl>
2005-08-31 14:50 ` Martin Wilck
2005-08-31 14:40 ` Andi Kleen [this message]
2005-08-12 11:13 Martin Wilck
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