On Thursday 31 May 2007 00:07:45 Dave Airlie wrote: > Depending on split all lowmem is below 1GB which isn't exactly > optimal, I'd llike all 4GB for DMA.
Well it would be for a quite specialized limited use case: - Memory the kernel doesn't need to map (after all kmap is evil) - You need more than 500MB or so. - 32bit kernel and user cannot run 64bit kernel - Machine has >3GB of RAM Is there clear evidence that is a common issue? If it is just a "would be nice to have in theory" the cost of doing a GFP_DMA32 for i386 would be probably not worth doing it. If it's a common issue it might be considered, although the "here's a nickle. buy yourself a 64bit CPU" strategy would also sound attractive. Please give a very very strong rationale why you want it. Did you actually run into such a situation yourself yet? -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/
