On 22 July 2013 14:54, Paolo Bonzini <pbonz...@redhat.com> wrote: > This series drops isa_mmio and replace it with an alias of the > root I/O memory region. After applying back the LITTLE_ENDIAN > mark for PortioLists, everything works as expected: the port memory > regions appear directly in the FlatView with the right endianness, > and MMIO is dispatched straight to them.
In the long term it would be good to identify which boards were using isa_mmio purely for the benefit of old_portio (which I think is basically "boards where the CPU has no concept of port I/O instructions"). In these cases there should be nobody calling cpu_in/out* any more, and so the 'system io space' returned by get_system_io() has devolved to just being used as a container corresponding to the PCI IO address space (which is then mapped into the system MMIO space somewhere). This can be replaced by having the PCI bridge device create a container space specifically to be the IO address space. (This is how hw/pci-host/versatile.c does it, for example). That's longer term and not 1.6 material though. thanks -- PMM
