Messages in this thread | | | Subject | Re: [PATCH] [2/2] POWERPC: Lower threshold for DART enablement to 1GB, V2 | From | Benjamin Herrenschmidt <> | Date | Sat, 15 Apr 2006 06:57:55 +1000 |
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> What I had in mind is an interface that given a PCI bridge will tell > you what's the most restrictive DMA mask for a device on that bridge, > so that you'll know whether you need to enable the IOMMU for that > bridge. I'll even settle for a function that tells you what's the most > restrictive DMA mask in the system, preiod. There's nothing inherently > arch specific about this. > > (and as a side note, the IOMMU we are working on on x86-64 is Calgary, > which is actually roughly the same chipset used in some PPC > machines...)
Not sure I ever heard about that... What chipsets ?
Ben.
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