Re: [PATCH linux-evl 0/2] Add RISC-V support to EVL

On Wed, 2026-07-08 at 10:55 +0200, Philippe Gerum wrote:
> Jan Kiszka <[email protected]> writes:
> 
> > On 08.07.26 08:26, Tobias Schaffner wrote:
> > > 
> > > 
> > > On 7/8/26 08:07, Jan Kiszka wrote:
> > > > On 08.07.26 07:17, Tobias Schaffner wrote:
> > > > > On 7/8/26 00:30, Florian Bezdeka wrote:
> > > > > > On Fri, 2025-10-10 at 12:10 +0200, Tobias Schaffner wrote:
> > > > > > > Hi all,
> > > > > > > 
> > > > > > > this series introduces an initial EVL port for RISC-V.
> > > > > > > 
> > > > > > > While some tests are still failing, I’d like to share this early
> > > > > > > version with the community to gather feedback, reviews, and hopefully
> > > > > > > some assistance in refining the port.
> > > > > > > 
> > > > > > > The patches have been tested in combination with the Dovetail RISC-V
> > > > > > > port on top of v6.12-evl1-rebase.
> > > > > > > 
> > > > > > > Looking forward to your feedback and suggestions.
> > > > > > > 
> > > > > > 
> > > > > > I tried to apply this series today, and run into the following issues
> > > > > > reported by my tooling.
> > > > > > 
> > > > > > Patch 1 is fine, patch 2 has some checkpatch findings.
> > > > > > 
> > > > > > A couple of debatable warnings like:
> > > > > > 
> > > > > > WARNING: Misplaced SPDX-License-Identifier tag - use line 1 instead
> > > > > > #58: FILE: arch/riscv/include/uapi/asm/evl/fptest.h:2:
> > > > > > + * SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
> > > > > > 
> > > > > > WARNING: unnecessary whitespace before a quoted newline
> > > > > > #95: FILE: arch/riscv/include/uapi/asm/evl/fptest.h:34:
> > > > > > +
> > > > > > 
> > > > > > In addition to a serious one:
> > > > > > 
> > > > > > ERROR: Missing Signed-off-by: line by nominal patch author 'shannmu
> > > > > > <[email protected]>'
> > > > > 
> > > > > I did not get any responses from this email anymore. I can try to reach
> > > > > out to him one last time, but what do we do about it if he will not
> > > > > reply?
> > > > > 
> > > > 
> > > > If I read that patch correctly, it's majority is taken from the
> > > > corresponding Xenomai 3 logic. How much is unique contribution, how much
> > > > was your work, Tobias?
> > > 
> > > I added the evl_set_fpregs/evl_check_fpregs content which is a
> > > translation from what Gilles Chanteperdrix
> > > <[email protected]> did for the x86 and arm architectures
> > > with some isa enablement bits added.
> > > 
> > > This should be the initial version by shanmu where I added this on top:
> > > https://github.com/shannmu/linux/blob/xenomai4/wip/dovetail-riscv/
> > > evl_port/arch/riscv/include/asm/evl/fptest.h
> > > 
> > 
> > At least for this patch, I think it would be fair to claim authorship
> > for the final one and only refer to shanmu as provider of a baseline.
> > 
> 
> Agreed.  This is a trivial adaptation of the pre-existing
> arch/arm*/include/asm/evl/fptest.h, which is in and of itself
> boilerplate code.
> 

We had a short chat about this topic in the Xenomai community call
today. To avoid further delay of the dovetail 7.1 release we decided
that we will move out the risc-v series again.

Tobias will use the time to clarify a couple of those co-author and
signed-off topics. Each series (dovetail, evl, libevl) seems to have
those issues.

We will have to wait for a reply for some time, but we hope to address
those issues within the 7.2 cycle.

Evl and Dovetail v7.1-rebase branches should be up to date now.

Florian