On Fri, 2008-05-30 at 08:07 +0200, Haavard Skinnemoen wrote: > On Fri, 30 May 2008 11:13:23 +1000 > Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> wrote: > > > > Currently, this is the only interface I know that can do native-endian > > > accesses, so if you take it away, I'm gonna need an alternative > > > interface that doesn't do byteswapping. > > > > Are you aware that these also don't provide any ordering guarantee ? > > Yes, but I am not aware of any alternative. > > I think the drivers I've written have the necessary barriers (or dma > ops with implicit barriers) that they don't actually depend on any > DMA vs. MMIO ordering guarantees. I hope MMIO vs. MMIO ordering is > guaranteed though? Only to the same address I'd say. Ben. -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
