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SubjectRe: [RFC] Reverting NUMA-affine page table allocation
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On Sat, Feb 26, 2011 at 6:37 AM, Tejun Heo <tj@kernel.org> wrote:
> Hello,
>
> I've been looking through NUMA-affine page table allocation code and
> the proposed changes, and there currently are the a couple of
> problems.
>
> 1. Holes or misaligned nodes will force use of smaller sized mappings.
>   Patches to fix the problem have been posted by Yinghai[1].

git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-2.6-yinghai.git
memblock

>
> 2. find_early_table_space() always calculates the amount of the needed
>   space from 0 to the specified @end.  As nodes are registered, each
>   node would try to allocate accumulative amount of space for page
>   table.  This probably wouldn't cause any actual problem (may affect
>   emulated configurations a bit tho).

interesting.

Yinghai
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