Re: [PATCH 0/2] powerpc: Remove support for ppc405/440 Xilinx platforms

[Christophe Leroy <christophe.leroy@c-s.fr>]

Le 31/03/2020 à 09:19, Christophe Leroy a écrit :
> 
> 
> Le 31/03/2020 à 08:59, Michal Simek a écrit :
>> On 31. 03. 20 8:56, Christophe Leroy wrote:
>>>
>>>
>>> Le 31/03/2020 à 07:30, Michael Ellerman a écrit :
>>>> Christophe Leroy <christophe.leroy@c-s.fr> writes:
>>>>> Le 27/03/2020 à 15:14, Andy Shevchenko a écrit :
>>>>>> On Fri, Mar 27, 2020 at 02:22:55PM +0100, Arnd Bergmann wrote:
>>>>>>> On Fri, Mar 27, 2020 at 2:15 PM Andy Shevchenko
>>>>>>> <andriy.shevchenko@linux.intel.com> wrote:
>>>>>>>> On Fri, Mar 27, 2020 at 03:10:26PM +0200, Andy Shevchenko wrote:
>>>>>>>>> On Fri, Mar 27, 2020 at 01:54:33PM +0100, Arnd Bergmann wrote:
>>>>>>>>>> On Fri, Mar 27, 2020 at 1:12 PM Michal Simek
>>>>>>>>>> <michal.simek@xilinx.com> wrote:
>>>>>> ...
>>>>>>
>>>>>>>>>> It does raise a follow-up question about ppc40x though: is it
>>>>>>>>>> time to
>>>>>>>>>> retire all of it?
>>>>>>>>>
>>>>>>>>> Who knows?
>>>>>>>>>
>>>>>>>>> I have in possession nice WD My Book Live, based on this
>>>>>>>>> architecture, and I
>>>>>>>>> won't it gone from modern kernel support. OTOH I understand that
>>>>>>>>> amount of real
>>>>>>>>> users not too big.
>>>>>>>>
>>>>>>>> +Cc: Christian Lamparter, whom I owe for that WD box.
>>>>>>>
>>>>>>> According to https://openwrt.org/toh/wd/mybooklive, that one is
>>>>>>> based on
>>>>>>> APM82181/ppc464, so it is about several generations newer than 
>>>>>>> what I
>>>>>>> asked about (ppc40x).
>>>>>>>
>>>>>>>>> Ah, and I have Amiga board, but that one is being used only for
>>>>>>>>> testing, so,
>>>>>>>>> I don't care much.
>>>>>>>
>>>>>>> I think there are a couple of ppc440 based Amiga boards, but again,
>>>>>>> not 405
>>>>>>> to my knowledge.
>>>>>>
>>>>>> Ah, you are right. No objections from ppc40x removal!
>>>>>
>>>>> Removing 40x would help cleaning things a bit. For instance 40x is the
>>>>> last platform still having PTE_ATOMIC_UPDATES. So if we can remove 40x
>>>>> we can get rid of PTE_ATOMIC_UPDATES completely.
>>>>>
>>>>> If no one objects, I can prepare a series to drop support for 40x
>>>>> completely.
>>>>>
>>>>> Michael, any thought ?
>>>>
>>>> I have no attachment to 40x, and I'd certainly be happy to have less
>>>> code in the tree, we struggle to keep even the modern platforms well
>>>> maintained.
>>>>
>>>> At the same time I don't want to render anyone's hardware obsolete
>>>> unnecessarily. But if there's really no one using 40x then we should
>>>> remove it, it could well be broken already.
>>>>
>>>> So I guess post a series to do the removal and we'll see if anyone
>>>> speaks up.
>>>>
>>>
>>> Ok, series sent out, see
>>> https://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=167757
>>
>> ok. I see you have done it completely independently of my patchset.
>> Would be better if you can base it on the top of my 2 patches because
>> they are in conflict now and I need to also remove virtex 44x platform
>> also with alsa driver.
>>
> 
> I can't see your first patch, only the second one shows up in the 
> series, see 
> https://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=167757
> 


Ok, I found your first patch on another patchwork, it doesn't touch any 
file in arch/powerpc/

I sent a v2 series with your powerpc patch as patch 2/11

See https://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=167766

Christophe
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