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

Jan Kiszka <[email protected]> Wed, 8 Jul 2026 09:23:45 +0200
Newsgroups dev.linux.lists.xenomai
Message-ID <[email protected]>
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.

Jan

-- 
Siemens AG, Foundational Technologies
Linux Expert Center