Ipipe-Patch for kernel version 5.4.23

Greg Gallagher greg at embeddedgreg.com
Mon Mar 2 17:24:56 CET 2020


On Mon, Mar 2, 2020 at 11:12 AM Lange Norbert via Xenomai
<xenomai at xenomai.org> wrote:
>
>
>
> > -----Original Message-----
> > From: Jan Kiszka <jan.kiszka at siemens.com>
> > Sent: Montag, 2. März 2020 16:59
> > To: Lange Norbert <norbert.lange at andritz.com>
> > Subject: Re: Ipipe-Patch for kernel version 5.4.23
> >
> > NON-ANDRITZ SOURCE: BE CAUTIOUS WITH CONTENT, LINKS OR
> > ATTACHMENTS.
> >
> >
> > Offlist by intention?
>
> Nope, just Outlook hating me.
>
> Norbert
>
> >
> > Jan
> >
> > On 02.03.20 16:26, Lange Norbert wrote:
> > >
> > >
> > >> -----Original Message-----
> > >> From: Xenomai <xenomai-bounces at xenomai.org> On Behalf Of Jan
> > Kiszka
> > >> via Xenomai
> > >> Sent: Montag, 2. März 2020 13:38
> > >> To: Ralf Moder <ralf.moder at hbkworld.com>; xenomai at xenomai.org
> > >> Subject: Re: Ipipe-Patch for kernel version 5.4.23
> > >>
> > >> NON-ANDRITZ SOURCE: BE CAUTIOUS WITH CONTENT, LINKS OR
> > ATTACHMENTS.
> > >>
> > >>
> > >> 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
> > >
> > > I still can't estimate the impact of swapping to dovetail, how much "ripples"
> > this will cause.
> > > I suppose the cobalt usermode interface will stay the same.
> > >
> > > -   Will drivers (rtnet) be affected?
I don't think there will be a big impact, but that may depend on how
the RTDM core is ported over.

> > > -   AFAIU there finally will be shared clocks (monotonic, realtime) between
> > cobalt and linux?
> > >
> > > I would of course welcome a 5.4 kernel, allowing me to drop several
> > backported patches,
> > > at the same time it's not a really good time to swap the basic building blocks
> > for us.
x86 5.4 kernel?
> > >
> > > Norbert
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> This message and any attachments are solely for the use of the intended recipients. They may contain privileged and/or confidential information or other information protected from disclosure. If you are not an intended recipient, you are hereby notified that you received this email in error and that any review, dissemination, distribution or copying of this email and any attachment is strictly prohibited. If you have received this email in error, please contact the sender and delete the message and any attachment from your system.
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