On 07/13/2013 06:03 PM, David Gibson wrote: > On Fri, Jul 12, 2013 at 05:37:19PM +1000, Alexey Kardashevskiy wrote: >> sPAPR PHB emulates IO ports on PCI via a special memory region which >> routes all reads/writes further via cpu_in*/cpu_out* which are eventually >> processed by MemoryRegionOps implemented by devices.
> Hrm. That double dispatch was a workaround for bugs in the plain > memory region dispatching which meant we couldn't directly map regions > in memory space to IO areas. > > It would be worth checking if that workaround is still necessary. Hm. Good point, thanks! It seems memory_region_init_io is not necessary any more. Will make a patch for it. -- Alexey
