On 6/22/2017 2:08 PM, Alan Cox wrote:

But this does not do the same thing as an ioread64 with regards to
atomicity or side effects on the device. The same is true of the other
hacks. You either have a real 64bit single read/write from MMIO space or
you don't. You can't fake it.

Yes, I know. But is it not better than having every driver that wants to 
use these functions fake it themselves?

Logan