Re: [Qemu-devel] [PATCH v2 0/8] memory: remove old_portio usage

[Jan Kiszka <jan.kiszka@siemens.com>]

On 2013-06-17 22:39, Hervé Poussineau wrote:
> Jan Kiszka a écrit :
>> On 2013-06-17 09:32, Paolo Bonzini wrote:
>>> Il 16/06/2013 20:20, Hervé Poussineau ha scritto:
>>>> Hervé Poussineau a écrit :
>>>>> These proposed patches aim at removing the .old_portio member of
>>>>> MemoryRegionOps structure, and replacing their usage by .read/.write
>>>>> handlers.
>>>> Ping.
>>> Jan has patches that do something similar, so I was hoping he'd look at it.
>>>
>>> Jan, are you back from vacation? :)
>>
>> Yes, and that is the problem. ;)
>>
>> >From a quick glance, I'm a bit skeptical, Hervé, that your patches are
>> addressing all corner cases like mine. Did you see
>> http://thread.gmane.org/gmane.comp.emulators.qemu/210188?
>>
>> Jan
>>
> 
> My patches are less intrusive than yours, because they are probably less 
> complex. They don't change subpage handling, they don't remove the 
> register_ioport_*, and they don't move ioport handling to memory core.
> 
> However, my patches do not add a new base address field in MemoryRegion, 
> and also simplify cpu_in/out to be simply a call to 
> address_space_read/write (like yours).
> 
> I don't really care whatever way is chosen. I'm only interested to be 
> able to put I/O address space into memory space, so I can improve PReP 
> emulation.

Refactorings like the subpage changes are required to break up the BQL
also for PIO dispatching. So we need the complete rework. But, of
course, I'm open for improvement suggestions.

I'm planning to rebase my series on top of Paolo's changes soon and will
then post. Would you mind rebasing what you need additionally on top of
that?

Jan

-- 
Siemens AG, Corporate Technology, CT RTC ITP SES-DE
Corporate Competence Center Embedded Linux