Re: [Qemu-devel] [PATCH 00/28] Memory API for 1.6: fix I/O port endianness mess

[Peter Maydell]

On 22 July 2013 15:36, Paolo Bonzini <address@hidden> wrote:
> Il 22/07/2013 16:32, Peter Maydell ha scritto:
>> 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").
>
> All of them.  Only i386/x86_64 has I/O space, as far as I know.

Sounds plausible. I had wondered if our ISA bus infrastructure
assumed that ISA device IO ports live in the system IO space,
but it doesn't.

Side question: should the ICH9 emulation ich9_lpc_initfn()
really put its ISA bus in the system IO space rather than
in the pci_address_space_io() ?

-- PMM