Re: Ipipe-Patch for kernel version 5.4.23

[Ralf Moder <ralf.moder@hbkworld.com>]

Am 02.03.20 um 17:01 schrieb Jan Kiszka:
> On 02.03.20 16:17, Greg Gallagher wrote:
>>
>> On Mon, Mar 2, 2020 at 7:38 AM Jan Kiszka via Xenomai
>> <xenomai@xenomai.org <mailto:xenomai@xenomai.org>> wrote:
>>
>>     On 02.03.20 11:00, Ralf Moder via Xenomai wrote:
>>      > Hello everyone,
>>      > I need the kernel version 5.4.23 in an embedded linux project
>>     because of driver stuff but also the Xenomai extension. How big is
>>     the probability that an I-pipe patch for the 5.4 version will be
>>     released in the next 2 to 3 months?
>>
>>     I would first of all say that it's >0. But beyond that, it
>> depends on
>>     the architecture: x86 should be available on 5.4 in the next months
>>     with
>>     a probability >>50% as that will be my primary target for looking
>> into
>>     how to move forward. ARM and ARM64 currently lacks a maintainer.
>> If we
>>     are lucky, the base enabling via Philippe's dovetail queue will
>> enable
>>     those more or less as well. But it will definitely take someone
>> to take
>>     responsibility for those archs because my colleagues and I currently
>>     cannot invest beyond integrating contributions. There is also ppc32
>>     (which has a maintainer), but I suppose that this is not your
>> target.
>>
>>     Jan
>>
>>     --     Siemens AG, Corporate Technology, CT RDA IOT SES-DE
>>     Corporate Competence Center Embedded Linux
>>
>> If you need this for arm I was going to try to port the ipipe to 5.4
>> in the near future. Effort wise it shouldn't be too bad, but it all
>> depends on how much the upstream changes impact us.  What board are
>> you targeting?
it is a SoC from xilinx with 2 arm cortex a53 kernel on it
>
> I suppose that questions addresses Ralf (provided he runs on ARM).
>
> As mentioned before, our tiny test lab currently contains for ARM a
> BeagleBone Black and QEMU instance.
The ESPRESSObin from marvell could be a good eval board for testing .If
you need it we can send you one. Or we can test new patches here in our
company.
>>
>> Jan, I can  help out maintaining the ARM ipipe.  We can talk offline
>> if you'd like.
It would be great if you could keep us up to date on your progress in
patching kernel version 5.4. If we can support you in any way, let us know.

> That would be great, looking forward!
>
> Jan
>
Ralf

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