[Linux-ia64] Re: [patch] support 64 bit pci_alloc_consistent

Arjan van de Ven
2003-05-18T14:21:30Z

On Sun, May 18, 2003 at 09:17:48AM -0500, James Bottomley wrote:
> (it uses 32 bit addr and 32 bit len descriptors, but reduces len to 24
> bits to steal the extra byte for 7 bits extra addressing). However, it
> is forced to request the full 64 bit address mask---I've never worked
> out what will happen to it on a machine with more than 512GB memory.

Uh??? right now even in 2.4 arbitrary bitmasks are supported for
non-coherent memory.