From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mslow3.mail.gandi.net (mslow3.mail.gandi.net [217.70.178.249]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4404543C7C4 for ; Thu, 30 Jul 2026 13:57:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.178.249 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785419864; cv=none; b=jo6T95nSKlNknKcfXYjxTt+86KqSEpj1uxcI3a5NtnJW9X84UZBRr7DttSDHog9Fsc8a9yAeUAw5bwqd++Oev2dzPWZJw7Y6s7++1QavZ+FMZruTVnu/pXMozR8MrqzDfONdURlhLT+DquYAlWQXvWVQz9YslHrybOYso86CWTI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785419864; c=relaxed/simple; bh=jRyTYEMjV6aZhR6CvAnxxfLV87AQOFsrCWHYNrf5q6k=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=X7XwrM9ZgVvbExBHAP33sL5SrH9DtWdBmtmuujJZb0XM+bgiab1jCeaDj3b1rO13Qow313y/fh3Ed6SKvad1u0ljJ0bsW2s5oSj7BlQpBzSJoATvDSwqbiRQC5HRqf9IO73G8mYsGInbkMjpitgcVbrWsGijV1Bq6zDDKkNjSNg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=xenomai.org; spf=pass smtp.mailfrom=xenomai.org; dkim=pass (2048-bit key) header.d=xenomai.org header.i=@xenomai.org header.b=fOLn+K4X; arc=none smtp.client-ip=217.70.178.249 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=xenomai.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=xenomai.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=xenomai.org header.i=@xenomai.org header.b="fOLn+K4X" Received: from relay7-d.mail.gandi.net (relay7-d.mail.gandi.net [IPv6:2001:4b98:dc4:8::227]) by mslow3.mail.gandi.net (Postfix) with ESMTP id 2E3AC5833B5 for ; Thu, 30 Jul 2026 13:27:47 +0000 (UTC) Received: by mail.gandi.net (Postfix) with ESMTPSA id A7BCB3EC2A; Thu, 30 Jul 2026 13:27:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=xenomai.org; s=gm1; t=1785418059; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=JyRqIzQR1CkxllDjltCdT2ahJ5Ei0s1MyhIFJNyZOZM=; b=fOLn+K4Xn49ZpY++GuHDPBDme65p3rTUgWjhlmVDbM6X5FAW1PcVwGQmX8PL6PX7Zz9YTZ Byfg87V3xtwsVkGGIP52t6FxxM5ta4+wzuCFLit9FYqDFFWAvsprExv2sVM8W6Tk5LnWRL pO9iBuN1CfIToQrdc0Uj0ykUpJ3ZGtK/JhwNyuYoImLXHk7djmqhZAWvWtc/KtcVuJs1JO YvcmVXKqpUqftjYXv5NjSXt7lu8Yo38iZNMLTLyBd9UlbIxyoPi0tHwK2BSoRfoPnNKuc0 4jjQKJmNlfwgdYDKKkRH+O6I6A34md2CUeEDpWeRgsgpkToKbW9qDpZ69Y4KiQ== From: Philippe Gerum To: Tobias Schaffner Cc: xenomai@lists.linux.dev, florian.bezdeka@siemens.com, jan.kiszka@siemens.com Subject: Re: [PATCH linux-evl v3 1/2] riscv: Add EVL core In-Reply-To: <20260728111305.2699306-2-tobias.schaffner@siemens.com> (Tobias Schaffner's message of "Tue, 28 Jul 2026 13:13:02 +0200") References: <20260728111305.2699306-1-tobias.schaffner@siemens.com> <20260728111305.2699306-2-tobias.schaffner@siemens.com> User-Agent: mu4e 1.12.12; emacs 30.2 Date: Thu, 30 Jul 2026 15:27:38 +0200 Message-ID: <87v79w8v5h.fsf@xenomai.org> Precedence: bulk X-Mailing-List: xenomai@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain X-GND-Sasl: rpm@xenomai.org X-GND-Cause: 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 X-GND-State: clean X-GND-Score: -100 Tobias Schaffner writes: > diff --git a/arch/riscv/include/uapi/asm/evl/fptest.h b/arch/riscv/include/uapi/asm/evl/fptest.h > new file mode 100644 > index 000000000000..1b1f4f0ce373 > --- /dev/null > +++ b/arch/riscv/include/uapi/asm/evl/fptest.h > @@ -0,0 +1,16 @@ > +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note > + * > + * Derived from Xenomai Cobalt, https://xenomai.org/ > + * Copyright (C) 2006 Gilles Chanteperdrix . > + */ > +#ifndef _EVL_RISCV_ASM_UAPI_FPTEST_H > +#define _EVL_RISCV_ASM_UAPI_FPTEST_H > + > +#include > + > +#define evl_riscv_fp 0x1 > + > +#define evl_set_fpregs(__features, __val) > +#define evl_check_fpregs(__features, __val, __bad) 0 > + > +#endif /* !_EVL_RISCV_ASM_UAPI_FPTEST_H */ Gilles did write the fptest bits for x86, arm and arm64 a long time ago when we were working on xenomai3, which I then picked for implementing xenomai4/evl. However, the risc-v bits can hardly be seen as an adaptation of any existing code, although the basic pattern has to be the same, since this implements an internal API. I believe that you should copyright it, I don't see this as a work derived from the other fptest implementations. -- Philippe.