On 03.03.20 15:23, Ralf Moder wrote:
Am 03.03.20 um 14:53 schrieb Greg Gallagher:


On Tue, Mar 3, 2020 at 8:46 AM Ralf Moder <ralf.mo...@hbkworld.com <mailto:ralf.mo...@hbkworld.com>> wrote:

    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>
    <mailto: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

This is an ultrascale? I’ve run the current ipipe code (4.19) on the ultra96 without issue.

You are right. It is a Xilinx UltraScale+ ZU2CG.  For some reasons we need the 5.4 kernel version on this board.

In the CIP project, Cybertrust is currently working on a mainline backport of UltraScale patches to 4.19-cip. I have no overview about what they already support or can realistically achieve, but it may be a plan B. If there is interest, I can ask them for an update on the current status.

Jan

--
Siemens AG, Corporate Technology, CT RDA IOT SES-DE
Corporate Competence Center Embedded Linux

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