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

From: Anthony Liguori
Subject: Re: [Qemu-ppc] [Qemu-devel] [PATCH] spapr-pci: change endianness for io ports space
Date: Mon, 15 Jul 2013 10:02:42 -0500
User-agent: Notmuch/0.15.2+202~g0c4b8aa (http://notmuchmail.org) Emacs/23.3.1 (x86_64-pc-linux-gnu)

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


Anthony Liguori

> -- 
> Alexey

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