Messages in this thread |  | | From | "David S. Miller" <> | Date | Fri, 29 Jun 2001 13:37:43 -0700 (PDT) |
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Alan Cox writes: > > And when the IOMMU is "full" what happens to all the SAC only > > cards in the machine? pci_map_{single,sg}() are not allowed > > to fail. > > Thats something we already know has to be fixed. Its true with or without > an IOMMU that there may be cases where there is no free mapping space
True, but my intended point is that starving the SAC-only users then returning DAC addresses to DAC-capable devices is just as unacceptable.
When we have one of these compute cluster cards in the box, and Jes's suggested algorithm is used, the rest of the SAC devices in the box would be totally screwed once the IOMMU fills up.
Later, David S. Miller davem@redhat.com - 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/
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