Re: Removal of POWER4 support, (was: [GIT PULL] Please pull powerpc/linux.git powerpc-4.17-1 tag)

2018-04-09 Thread Lennart Sorensen
On Sun, Apr 08, 2018 at 09:50:46AM +0200, Mathieu Malaterre wrote:
> Hi G5 users,
> 
> Could someone shed some lights on POWER4 removal. I thought G5 were POWER4 ?
> 
> (see below)
> ...
>  - Removal of POWER4 support, which was accidentally broken in 2016 and no one
>noticed, and blocked use of some modern instructions.
> ...
> 
> See commit 471d7ff8b51b63521c8ea35c51966ab4caa434ee in powerpc/next.

It seems that it is only generic IBM server POWER4 that is removed.
The special ones from freescale and the 970 in the G5 remain.

The PA6T has its own CPU type in the kernel, as does the 970.

-- 
Len Sorensen



Re: Removal of POWER4 support, (was: [GIT PULL] Please pull powerpc/linux.git powerpc-4.17-1 tag)

2018-04-08 Thread Matti Palmström

On 2018-04-08 10:07, John Paul Adrian Glaubitz wrote:

 From what I have gained now, PPC970 is apparently maintained in a separate
directory, so PowerPC Macintoshes should be fine. Not sure about the
Freescale stuff at the moment.


Reading on github 
https://github.com/torvalds/linux/blob/master/arch/powerpc/kernel/cputable.c 
support for POWER4 and POWER4+ was removed, but PPC970, PPC970FX et al. 
is still left. Support for the 64-bit Freescale cpus e5500 and e6500 is 
also still there.


To answer my question from earlier today, support for 32-bit powerpc 
seems to be unchanged.


Regards
/M



Re: Removal of POWER4 support, (was: [GIT PULL] Please pull powerpc/linux.git powerpc-4.17-1 tag)

2018-04-08 Thread Matti Palmström

On 2018-04-08 10:07, John Paul Adrian Glaubitz wrote:

 From what I have gained now, PPC970 is apparently maintained in a separate
directory, so PowerPC Macintoshes should be fine. Not sure about the
Freescale stuff at the moment.

We need to wait for the reply from Michael Ellermann.


Are the 74xx/G4 POWER4 or are those too a special case?

Regards
/M



Re: Removal of POWER4 support, (was: [GIT PULL] Please pull powerpc/linux.git powerpc-4.17-1 tag)

2018-04-08 Thread John Paul Adrian Glaubitz

On 04/08/2018 10:03 AM, Christian Zigotzky wrote:

I don’t understand it either. Adrian, could you please explain what happened? 
We are using POWER4 support for our P.A. Semi Nemo boards.


From what I have gained now, PPC970 is apparently maintained in a separate
directory, so PowerPC Macintoshes should be fine. Not sure about the
Freescale stuff at the moment.

We need to wait for the reply from Michael Ellermann.

Adrian

--
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer - glaub...@debian.org
`. `'   Freie Universitaet Berlin - glaub...@physik.fu-berlin.de
  `-GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913



Re: Removal of POWER4 support, (was: [GIT PULL] Please pull powerpc/linux.git powerpc-4.17-1 tag)

2018-04-08 Thread Christian Zigotzky
I don’t understand it either. Adrian, could you please explain what happened? 
We are using POWER4 support for our P.A. Semi Nemo boards.

Thanks
Christian

Sent from my iPhone

> On 8. Apr 2018, at 09:52, John Paul Adrian Glaubitz 
>  wrote:
> 
>> On 04/08/2018 09:50 AM, Mathieu Malaterre wrote:
>> Could someone shed some lights on POWER4 removal. I thought G5 were POWER4 ?
>> (see below)
>> ...
>>  - Removal of POWER4 support, which was accidentally broken in 2016 and no 
>> one
>>noticed, and blocked use of some modern instructions.
>> ...
> 
> What the actual fuck?!?!
> 
> -- 
> .''`.  John Paul Adrian Glaubitz
> : :' :  Debian Developer - glaub...@debian.org
> `. `'   Freie Universitaet Berlin - glaub...@physik.fu-berlin.de
>  `-GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913
> 



Re: Removal of POWER4 support, (was: [GIT PULL] Please pull powerpc/linux.git powerpc-4.17-1 tag)

2018-04-08 Thread John Paul Adrian Glaubitz

On 04/08/2018 09:50 AM, Mathieu Malaterre wrote:

Could someone shed some lights on POWER4 removal. I thought G5 were POWER4 ?

(see below)
...
  - Removal of POWER4 support, which was accidentally broken in 2016 and no one
noticed, and blocked use of some modern instructions.
...


What the actual fuck?!?!

--
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer - glaub...@debian.org
`. `'   Freie Universitaet Berlin - glaub...@physik.fu-berlin.de
  `-GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913