Messages in this thread | | | Subject | Re: [Linux-ia64] patch to no longer use ia64's software mmu | Date | Tue, 4 Dec 2001 18:19:55 +0000 (GMT) | From | Alan Cox <> |
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> Alan> I don't see the need: GFP_DMA is the ISA DMA zone. pci_* API > Alan> is used by everyone else [for 2.5]. > > Without a 4GB zone, you may end up creating bounce buffers needlessly > for 32-bit capable DMA devices, no?
Yes - but it becomes an implementation detail. Drivers don't go around asking for kmalloc in 4Gb zone anymore they ask for PCI memory that a 32bit pci address can hit. I'm sure a 4Gb zone is what will be there internally but you don't need GFP_4GBZONE as a visible driver detail.
Alan
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