On Mon, 18 Sep 2006, James Bottomley wrote: > 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). What does parisc do with GENERIC_ISA_DMA? I see config GENERIC_ISA_DMA bool No default and no explanation? Can I drop this from parisc's Kconfig? Is GENERIC_ISA_DMA set or not? - To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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