linux-kernel - Re: 9a2d43b: __alloc_bootmem

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Message-ID: <86802c440808240158qe35c6ddrc2774d19dc78a96@mail.gmail.com>
Date:	Sun, 24 Aug 2008 01:58:24 -0700
From:	"Yinghai Lu" <yhlu.kernel@...il.com>
To:	"Vegard Nossum" <vegard.nossum@...il.com>
Cc:	"Johannes Weiner" <hannes@...urebad.de>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>
Subject: Re: 9a2d43b: __alloc_bootmem_core(): zero-sized request

On Sun, Aug 24, 2008 at 1:43 AM, Vegard Nossum <vegard.nossum@...il.com> wrote:
dy...
>
> Yes, the v2.6.27-rc4 boots fine. I was wondering if you knew that this
> problem had occurred in the past (and if so, which commits I can
> cherry-pick to fix it). But I guess there is not much to do. It is
> also hard to test this same config with newer kernels, because
> something in the Kconfig changed in an incompatible way (e.g. NUMAQ
> setting changes when I change kernel versions).

a lot of changes on that section code in 2.6.27.

and according to old code, you are not supposed to use numaq enabled
kernel on non-numaq HW.
but from 2.6.27-rc1 you could do that. we made the code probe the
subarch and will fall back to default or bigsmp

YH
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