Re: alpha iommu fixes

Andrea Arcangeli (andrea@suse.de)
Mon, 21 May 2001 12:02:28 +0200


On Mon, May 21, 2001 at 11:42:16AM +0200, Andi Kleen wrote:
> [actually most IA32 boxes already have one in form of the AGP GART, it's just
> not commonly used for serious things yet]

I can be really wrong on this because I didn't checked anything about
the GART yet but I suspect you cannot use the GART for this stuff on
ia32 in 2.4 because I think I recall it provides not an huge marging of
mapping entries that so would far too easily trigger the bugs in the
device drivers not checking for pci_map_* faliures also in a common
desktop/webserver/fileserver kind of usage of an high end machine.

Andrea
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