Re: NUMA policy issues with ZONE_MOVABLE

[Nick Piggin <nickpiggin@yahoo.com.au>]

Christoph Lameter wrote:
> On Wed, 25 Jul 2007, Nick Piggin wrote:
> 
> 
>>>Doesnt this mean that ZONE_MOVABLE is incompatible with CONFIG_NUMA?
>>
>>I guess it has similar problems as ZONE_HIGHMEM etc. I think the
>>zoned allocator and NUMA was there first, so it might be more
>>correct to say that mempolicies are incompatible with them :)
> 
> 
> Highmem is only used on i386 NUMA and works fine on NUMAQ. The current 
> zone types are carefully fitted to existing NUMA systems.

I don't understand what you mean. Aren't mempolicies also supposed to
work on NUMAQ too? How about DMA and DMA32 allocations?


>>But I thought you had plans to fix mempolicies to do zones better?
> 
> 
> No sure where you got that from. I repeatedly suggested that more zones be 
> removed because of this one and other issues.

Oh I must have been mistaken.

Well I guess you haven't succeeded in getting zones removed, so I think
we should make mempolicies work better with zones.

-- 
SUSE Labs, Novell Inc.

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