Re: [Qemu-ppc] [Qemu-devel] [PATCH] spapr-pci: change endianness for io ports space

[Anthony Liguori]

Alexey Kardashevskiy <address@hidden> writes:

> 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.

You should try the latest qemu.git commit.  There shouldn't be a problem
anymore.

Regards,

Anthony Liguori

>
>
> -- 
> Alexey