Hi Robin, On 07/09/16 10:55, Robin Murphy wrote: > When an MSI doorbell is located downstream of an IOMMU, attaching > devices to a DMA ops domain and switching on translation leads to a rude > shock when their attempt to write to the physical address returned by > the irqchip driver faults (or worse, writes into some already-mapped > buffer) and no interrupt is forthcoming. > > Address this by adding a hook for relevant irqchip drivers to call from > their compose_msi_msg() callback, to swizzle the physical address with > an appropriatly-mapped IOVA for any device attached to one of our DMA > ops domains. > > CC: Thomas Gleixner <tglx@xxxxxxxxxxxxx> > CC: Jason Cooper <jason@xxxxxxxxxxxxxx> > CC: Marc Zyngier <marc.zyngier@xxxxxxx> > CC: linux-kernel@xxxxxxxxxxxxxxx > Signed-off-by: Robin Murphy <robin.murphy@xxxxxxx> Thanks for the quick respin. Acked-by: Marc Zyngier <marc.zyngier@xxxxxxx> M. -- Jazz is not dead. It just smells funny... -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
