On Tuesday 24 April 2007 22:33:04 Ashok Raj wrote: > With PCIE there is some benefit to keep dma addr low for performance reasons, > since it will use 32bit Transaction level packets instead of 64bit. > > This reservation is only required if we have some legacy device under a p2p > where its required to share its addr space with other devices. We could > implement a default when one is not specified to keep things simple.
We already have a couple of other IOMMU architectures who essentially have the same problem. Have you checked how they solve this? -Andi - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
