On Mon, 2006-09-18 at 14:55 +0100, Christoph Hellwig wrote: > Let's pass this on to linux-arch so that the arch maintainers can give input > whether they need ZONE_DMA or not. If this just sneaks in unseen I'd bet > various architectures will just keept it around despite not needing it.
Right at the moment, parisc has no use for ZONE_DMA. We basically set ZONE_DMA == ZONE_NORMAL. I don't believe our 32 bit systems will ever need it. On the 64 bit systems currently we insist on having an IOMMU for every transaction, so ZONE_DMA == ZONE_NORMAL still. However, on the zx1 systems, I can see us eventually implementing IOMMU bypass and for that case, we might need ZONE_DMA (primarily for GFP_DMA32, I suppose, which we could do internally). James - To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
