Re: alpha iommu fixes

Andrew Morton (andrewm@uow.edu.au)
Mon, 21 May 2001 02:54:16 +1000

Andrea Arcangeli wrote:
>
> > I can't find *any* pci_map_single() in the 2.4.4-ac9 tree
> > which can fail, BTW.
>
> I assume you mean that no one single caller of pci_map_single is
> checking if it failed or not (because all pci_map_single can fail).

No. Most of the pci_map_single() implementations just
use virt_to_bus()/virt_to_phys(). Even sparc64's fancy
iommu-based pci_map_single() always succeeds.
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