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Matthew Wilcox wrote: > So, let me try to understand ... your hardware allows writes from the > device to pass other writes from the device? Doesn't that violate the > PCI spec? I'm thinking about this (page 43 of PCI 2.3): Hi Matthew, Yes I believe this behavior on sn2 is 'bending' the PCI spec a bit. The problem is that the NUMA fabric is a routed network in itself so there can be multiple paths between the device and the physical memory it DMAs to/from. Cheers, Jes - 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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