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Date: Fri, 1 Dec 2000 10:19:44 -0800
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From: "David S. Miller" <davem@redhat.com>
To: andrea@suse.de
CC: ink@jurassic.park.msu.ru, ezolt@perf.zko.dec.com, axp-list@redhat.com,
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In-Reply-To: <20001201151842.C30653@athlon.random> (message from Andrea
	Arcangeli on Fri, 1 Dec 2000 15:18:42 +0100)
Subject: Re: mm->context[NR_CPUS] and pci fix check [was Re: Alpha SCSI error on 2.4.0-test11]
In-Reply-To: <20001201004049.A980@jurassic.park.msu.ru> <Pine.OSF.3.96.1001130171941.32335D-100000@perf.zko.dec.com> <20001130233742.A21823@athlon.random> <20001201145619.A553@jurassic.park.msu.ru> <20001201151842.C30653@athlon.random>
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   Date: 	Fri, 1 Dec 2000 15:18:42 +0100
   From: Andrea Arcangeli <andrea@suse.de>

   I'm still left the #ifdef __alpha__ around the context[NR_CPUS] to
   avoid breakage of other archs but that should be probably removed:
   any CPU with per-CPU ASNs like alpha needs per-CPU per-MM context
   information to avoid wasting ASNs when the task migrate CPU or with
   threads.

I would instead suggest to declare 'context' to be of an arch-specific
defined type, much like "thread_struct" is.

For example, I don't need NR_CPUS contexts in the mm_struct on
sparc64, my allocation just works differently, so I shouldn't eat
all the space.

Later,
David S. Miller
davem@redhat.com
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