On Monday 13 June 2011 12:08:19 Catalin Marinas wrote: > The change proposed by Hartley wouldn't make much difference from the > current volatile accesses (__raw_* accessors are implemented as volatile > on ARM). I guess it would mainly make a difference if we get a platform where the PCI bus window is not in the same address space as the regular physical memory and the accessors actually need to do a computation on the address. AFAICT, ARM does not currently have any such platform and I would hope that it says that way. > I think the memcpy_(from|to)io could be optimised on ARM to only add a > barrier before or after he copying loop. Agreed, good idea. Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-fbdev" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
