> > > [..] Even sparc64's fancy
> > > iommu-based pci_map_single() always succeeds.
> >
> > Whatever sparc64 does to hide the driver bugs you can break it if you
> > pci_map 4G+1 bytes of phyical memory.
>
> Which is an utterly stupid thing to do.
>
> Please construct a plausable situation where this would occur legally
> and not be a driver bug, given the maximum number of PCI busses and
> slots found on sparc64 and the maximum _concurrent_ usage of PCI dma
> space for any given driver (which isn't doing something stupid).
What stops you from plugging PCI-to-PCI bridges in order to create
some large number of slots, like 128?
Pavel
-- I'm pavel@ucw.cz. "In my country we have almost anarchy and I don't care." Panos Katsaloulis describing me w.r.t. patents at discuss@linmodems.org - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/