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SubjectRe: __get_free_pages()
Hi,

> 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..."

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