> Various boards have different DMA limits. PCI devices may be limited to
> 1meg, or 4Gig in a 64bit system. The GFP_DMA bit is getting overloaded,
PCI devices themselves are usually not limited to anything less than
4Gig. I know of the following limits:
* 1 Meg ISA 8-bit DMA
* 16 Meg ISA 16-bit DMA
* 4 Gig 32-bit cards in 64-bit systems
> and it seems to me that just adding more GFP_DMA bits is an exploding
> problem.
Have a nice fortnight
-- Martin `MJ' Mares <mj@ucw.cz> http://atrey.karlin.mff.cuni.cz/~mj/ Faculty of Math and Physics, Charles University, Prague, Czech Rep., Earth "And don't forget to feed your computer virus..."- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu