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

[Christophe Leroy]

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 at 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 at 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 ?

Christophe