Messages in this thread | | | From | "H. Peter Anvin" <> | Subject | Re: [patch] 32-bit dma memory zone | Date | 8 Jun 2001 14:00:54 -0700 |
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Followup to: <m13d9b3ttj.fsf@frodo.biederman.org> By author: ebiederm@xmission.com (Eric W. Biederman) In newsgroup: linux.dev.kernel > > The AMD760 which looks like it might walk on both the alpha, an x86 > side of the fence also has an iommu. Mostly it's used for AGP but > according to the docs it should be able to handle the other cases as > well. The only downside is that it only supports 4GB of ram... > > Anyway we shouldn't assume iommu's don't exist on x86. >
On most chips the AGP GART isn't just limited to AGP; it's a full-fledged iommu. The main problem with it is that it is usually a rather limited space it provides.
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