Re: 2.5.64bk5: X86_PC + HIGHMEM boot failure

Adam J. Richter (adam@yggdrasil.com)
Mon, 10 Mar 2003 00:46:05 -0800


On Sun, 09 Mar 2003, Martin J. Bligh wrote:

>> Under linux-2.5.64bk5, CONFIG_X86_PC sets CONFIG_NUMA,
>> which sets CONFIG_DISCONTIGMEM. This causes the version of
>> set_max_mapnr_init in arch/i386/mm/discontig.c to be compiled
>> in (instead of the one from arch/i386/mm/init.c):
>>
>> Err, I meant 2.5.64bk4.

>Hmmm ... well I don't see bk4 on ftp.kernel.org,

I meant ftp://ftp.kernel.org/pub/liux/kernel/v2.5/linux-2.5.64.tar.gz
patched with
ftp://ftp.kernel.org/pub/liux/kernel/v2.5/snapshots/patch-2.5.64-bk4.gz.

>but the same
>changes are in my tree ... I've just checked it, and it doesn't
>do that for me. It should *allow* you to turn on CONFIG_NUMA
>(and that might be broken for PCs still) but it shouldn't be on
>by default ... could you check that you can still disable it?
>Works for me ...

Oops. You're right it is possible to deactivate
CONFIG_NUMA in this kernel under X86_PC, and that avoids
the problem. I guess there still is the minor issue that
either CONFIG_NUMA should work with X86_PC + HIGHMEM (even
on machines without high memory) or else CONFIG_NUMA
should not be selectable in this case, but that's obviously
a bug of much less importance.

Sorry for my misunderstanding of the CONFIG_NUMA configution
options.

Adam J. Richter __ ______________ 575 Oroville Road
adam@yggdrasil.com \ / Milpitas, California 95035
+1 408 309-6081 | g g d r a s i l United States of America
"Free Software For The Rest Of Us."

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