From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mout-p-101.mailbox.org (mout-p-101.mailbox.org [80.241.56.151]) (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 ACA0439901A; Wed, 1 Jul 2026 20:52:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=80.241.56.151 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782939148; cv=none; b=kL8FH02exQil+wfV0dwOJgBsTs0LhvFqNBj7nv7hM00ERhUzrQuTLWJV7qWrJ8oAdXNSm8j3Dmhj99wAQ3JH685LIeRjYRxpS075ukn17BGpPY2lEnmNcSeL5V7A+PGnoFGn4WkceKuBHcad8Y1bGNAhXaeiiPWiedMqzMFrdrQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782939148; c=relaxed/simple; bh=S5lxwaDUlg3hPhzbjhLS8dF4IGAdpEgdctptljqQd20=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=Lq3t20p10wsDpv6pK56MajF8P555cW370N9WJVqjM7mctRwl29tIAvBRCIuMSeCY9gN2J4jxW+tyZvXABBT8oseZWAVy+eoR+rbGdZCB5GI3tMUBWnTKJ0PNBuL6YVfOeozcbEJVUXg3fYbvdbVowGJk3FkfB1EX4ZsK4DCv/L0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=mailbox.org; spf=pass smtp.mailfrom=mailbox.org; dkim=pass (2048-bit key) header.d=mailbox.org header.i=@mailbox.org header.b=llrXo7fJ; arc=none smtp.client-ip=80.241.56.151 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=mailbox.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=mailbox.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=mailbox.org header.i=@mailbox.org header.b="llrXo7fJ" Received: from smtp102.mailbox.org (smtp102.mailbox.org [10.196.197.102]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA512) (No client certificate requested) by mout-p-101.mailbox.org (Postfix) with ESMTPS id 4grBzB6Pfbz8v10; Wed, 01 Jul 2026 22:52:22 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mailbox.org; s=mail20150812; t=1782939142; 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: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=KDjDTATqNVEjy4/eLFLsbZrtthmvzujKNtPqmpMmWw8=; b=llrXo7fJqzU25O+uRx7CnozwD4Mcym6LY6K5YXRFfFtVDwy0QlOiP0qKviM9Aj42qCw2BK BCwD5CwLgBLBu+d4dCL9QrXomsHp0agyWSyNtjaqgmu2+xplFT0k7H5x8if6hrJUnAiGVR MjyFDptl2S7hTBcEtK5rul5B9jnObE4b+vN37Sg56q1jGj8Ngw50RFb4z7srI2ApixgYne ySpBU593s5Ub3YBOQw5I/s1FIo0dAkSZGlDHHhiCK0CfLd5t5NtPdoMyWvmzaA5++zFe5r H906D5ZN5YVmMDLEYl9SfnZJjgcFJ9rCn8lYzhuXKVtxtVrnoxP/dpUgHtTp4Q== Message-ID: <4ab6c86a-d809-47c3-bfb3-28da499a1457@mailbox.org> Date: Wed, 1 Jul 2026 22:42:21 +0200 Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Subject: Re: [PATCH v2 3/4] irqchip/gic-v3: Add Renesas R-Car Gen4 erratum workaround To: Marc Zyngier Cc: Thomas Gleixner , linux-pci@vger.kernel.org, Yoshihiro Shimoda , =?UTF-8?Q?Krzysztof_Wilczy=C5=84ski?= , Bjorn Helgaas , Catalin Marinas , Conor Dooley , Geert Uytterhoeven , Krzysztof Kozlowski , Lorenzo Pieralisi , Manivannan Sadhasivam , Rob Herring , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org References: <20260618220427.14325-1-marek.vasut+renesas@mailbox.org> <20260618220427.14325-4-marek.vasut+renesas@mailbox.org> <87cxxkma5p.ffs@fw13> <8633yfrrnc.wl-maz@kernel.org> Content-Language: en-US From: Marek Vasut In-Reply-To: <8633yfrrnc.wl-maz@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-MBO-RS-ID: f3b0010bad76142726e X-MBO-RS-META: ydwdkqwy6x9kt434cjesqq4qbeoj6erp On 6/22/26 8:55 AM, Marc Zyngier wrote: Hello Marc, >> On 6/21/26 12:59 PM, Thomas Gleixner wrote: >>> On Fri, Jun 19 2026 at 00:02, Marek Vasut wrote: >>>> Renesas R-Car S4/V4H/V4M GIC600 integration has address width for AXI >>>> or APB interface configured to 32 bit, it can therefore access only >>>> the first 4 GiB of physical address space. This information comes from >>>> R-Car V4H Interface Specification sheet, there is currently no technical >>>> update number assigned to this limitation. Further input from hardware >>>> engineer indicates that this limitation also applies to R-Car S4 and V4M. >>>> Name the limitation GEN4GICITS1, and add a driver quirk to mitigate this >>>> limitation. >>>> >>>> The quirk is keyed on the combination of the GIC implementation >>>> and the platform identification in the device tree. >>>> >>>> Signed-off-by: Yoshihiro Shimoda >>>> Signed-off-by: Marek Vasut >>> >>> This SOB chain is broken. >> >> Broken ? I don't understand , could you please elaborate ? > > Either Shimoda-san is the sole author of the change and you are > posting their work, then the first line of the patch should say: > > From: Yoshihiro Shimoda > > with your own SoB immediately following their SoB (see [1]). > > Or this has been co-developed, and both of you should be credited as > authors. then Shimoda-san's SoB should be preceded by their > Co-developed-by: tag (see [2]). > > Co-developed-by: Yoshihiro Shimoda > Signed-off-by: Yoshihiro Shimoda > Signed-off-by: Marek Vasut > > This shows exactly who did what, who forwarded whose patch, and forms > the base of the DCO which is documented at [3]. > > Thanks, > > M. > > [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst#n449 > [2] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst#n503 > [3] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst#n396 Thank you very much for the clarification!