Messages in this thread | | | Subject | Re: ZONE_DMA (was: Re: 2.6.19 -mm merge plans) | From | Alan Cox <> | Date | Thu, 21 Sep 2006 02:03:50 +0100 |
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Ar Mer, 2006-09-20 am 17:31 -0700, ysgrifennodd Christoph Lameter: > ZONE_DMA does not have a bright future with IOMMUs and other things > around. None of my system uses ZONE_DMA and I have a variety of them.
IOMMUs don't always help. They IOMMU aperture on AMD64 for example is too high to help devices with below 32bit limits.
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