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From: Andi Kleen <andi@firstfloor.org>
To: Mel Gorman <mel@csn.ul.ie>
Cc: mingo@elte.hu, linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	apw@shadowen.org
Subject: Re: [PATCH 0/2] Relax restrictions on setting CONFIG_NUMA on x86
Date: Wed, 23 Jan 2008 11:45:14 +0100	[thread overview]
Message-ID: <200801231145.14915.andi@firstfloor.org> (raw)
In-Reply-To: <20080123102834.GC21455@csn.ul.ie>


> > i386 already has srat parsing code (just written in a horrible hackish
> > way); but it exists arch/x86/kernel/srat_32.c
>
> Yes, I spotted that. Enabling it required a Kconfig change 

does it? I was pretty sure that a !NUMAQ i386 CONFIG_NUMA build
already used that. At least that was the case when I last looked. If that
has changed it must have bitrotted recently.

> or two and 
> enabling BOOT_IOREMAP. It then crashes early in boot on a call to strlen()
> so I went with the stubs and SRAT disabled for the moment.

Crashed on a Opteron box? That was always the case

If it crashed on a (older) Summit then it likely bitrotted, because that 
worked at some point. The code was originally written by Pat G. for Summit1
and I believe was at least used by some people (no distributions) for S2,
possible 3 too.

> Ok, understood. When I next revisit this, I'll look at making ACPI_SRAT
> and BOOT_IOREMAP work on normal machines and see what happens. Thanks.

Again the problem shouldn't be normal machines, but non Summit NUMA systems.

-Andi


  reply	other threads:[~2008-01-23 10:45 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-01-18 15:35 [PATCH 0/2] Relax restrictions on setting CONFIG_NUMA on x86 Mel Gorman
2008-01-18 15:35 ` [PATCH 1/2] Do not require CONFIG_HIGHMEM64G to set " Mel Gorman
2008-01-18 16:17   ` Ingo Molnar
2008-01-18 15:36 ` [PATCH 2/2] Allow any x86 sub-architecture type to set CONFIG_NUMA Mel Gorman
2008-01-18 16:17   ` Ingo Molnar
2008-01-19  6:35 ` [PATCH 0/2] Relax restrictions on setting CONFIG_NUMA on x86 Andi Kleen
2008-01-19 16:07   ` Mel Gorman
2008-01-22 12:14     ` Ingo Molnar
2008-01-22 12:29       ` Mel Gorman
2008-01-22 15:39         ` Ingo Molnar
2008-01-22 13:33     ` Andi Kleen
2008-01-23 10:28       ` Mel Gorman
2008-01-23 10:45         ` Andi Kleen [this message]
2008-01-23 10:57           ` Mel Gorman
2008-01-23 11:11             ` Andi Kleen
2008-01-23 11:15             ` [PATCH 0/2] Relax restrictions on setting CONFIG_NUMA on x86 II Andi Kleen
2008-01-23 11:24               ` Mel Gorman
2008-01-23 13:48                 ` Andi Kleen
2008-01-23 14:15                   ` Mel Gorman
2008-01-21  0:38 ` [PATCH 0/2] Relax restrictions on setting CONFIG_NUMA on x86 KOSAKI Motohiro
2008-01-21 14:35   ` Mel Gorman
2008-01-21 14:49     ` Ingo Molnar
2008-01-21 16:27       ` Mel Gorman
2008-01-23  2:04   ` KOSAKI Motohiro
2008-01-23 10:22     ` Mel Gorman
2008-01-24  3:19       ` KOSAKI Motohiro
2008-01-23 10:23     ` Mel Gorman
2008-01-26 14:10       ` KOSAKI Motohiro
2008-01-26 17:10         ` KOSAKI Motohiro
2008-01-26 17:18         ` Mel Gorman
2008-01-27  6:54           ` KOSAKI Motohiro
2008-01-28 15:02             ` Ingo Molnar
2008-01-29  2:57               ` KOSAKI Motohiro
2008-01-29 11:34             ` Mel Gorman
2008-02-03  9:32               ` KOSAKI Motohiro

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