Messages in this thread | | | Date | Tue, 30 Nov 2004 10:32:18 -0800 | From | Andrew Morton <> | Subject | Re: 2.6.10-rc2-mm4 |
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Arjan van de Ven <arjan@infradead.org> wrote: > > > > > - x86_64 supports a fourth VM zone: ZONE_DMA32. This may affect memory > > > > reclaim, but shouldn't. > > > > > > > > > what is the purpose of such a zone ?? > > > > For pages which have a physical address <4G. I assume this was motivated > > by the lack of an IOMMU on ia32e? > > but there's the swiommu for those... so that can't be it > realistically....
"This helps mainly graphic drivers who really need a lot of memory below the 4GB area. Previous they could only use IOMMU+16MB GFP_DMA, which was not enough memory."
> Is there code using the zone GFP mask yet ??
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