From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 128C714F121; Mon, 15 Sep 2025 04:41:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757911319; cv=none; b=Q/WyXhuCSwKS7zk3hIQXfH8/3mKviloSSl7cnu/kZHZUgp38YWQv5wyqJmv1GYrd0ukFild5w2G1w8sz1K8LuJBFjVY3Bwq9KgtdBu8XeJmfeSnxnpdB/qf+SvxKohYgLd0PuOVN/j322vQCa+87WrP2xQ3AKPZVhu+sHDXRdLc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757911319; c=relaxed/simple; bh=b/qNKcp4cR4Py7I6Jmk+kD30432fdQwu0TjuOKJbeyo=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=B/27kH7tlhdwa+zLOA23+1NbUQxPvP1sQ+VzwbbRXIrgo60nb9eOvvPStXzQ3hW+kNgjXpTTj57d5FD7YgxkJ+DAmCBY2MJgXNNrAM0yPicts2zKkflyw6Le+b7fPXJ5LoN/VafhgDWh7v7hgWQbTjkggUFWCn2hbFg5Bq3OZsk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=BKGQ7ztD; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="BKGQ7ztD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3122BC4CEF1; Mon, 15 Sep 2025 04:41:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1757911318; bh=b/qNKcp4cR4Py7I6Jmk+kD30432fdQwu0TjuOKJbeyo=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=BKGQ7ztDCnDjfZJ0cK4jdzXAQlg5ER9a5S6mlLN1o2ImSD31RSh7Lwze8SuHF0TkX rfYJllK7y5wqOF93+DWlDBGMbmuup4Xlc3cqmEwbBku+pHZv5LLLt4z0G5b/4h1Jmq tOvtOzEZGHAKZql6rfhAGE8Hlr5P+fKpGYuacg5DmAiwH+/6KnsntmV30MxFoQF/e6 7KB/uFRVxkdhQVFx+hr+PdjvWpl5gYmxr/jt7jldbt6xV9avUOPDdv8XdP7TlPbQEh w1yrB6rfYNAO6IjSoEt1bL+fK4LlE/db6uK0ux8c5Sfz62bLPnEdXBc1TD6rAq6wQE 8k9Zh2ZA8ao3g== Message-ID: <1b39712b-86c1-4eff-83ea-eb8b180db48c@kernel.org> Date: Mon, 15 Sep 2025 06:41:45 +0200 Precedence: bulk X-Mailing-List: linux-api@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH RESEND 21/62] init: remove all mentions of root=/dev/ram* To: Andrew Morton Cc: Askar Safin , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Linus Torvalds , Greg Kroah-Hartman , Christian Brauner , Al Viro , Jan Kara , Christoph Hellwig , Jens Axboe , Andy Shevchenko , Aleksa Sarai , =?UTF-8?Q?Thomas_Wei=C3=9Fschuh?= , Julian Stecklina , Gao Xiang , Art Nikpal , Eric Curtin , Alexander Graf , Rob Landley , Lennart Poettering , linux-arch@vger.kernel.org, linux-alpha@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, loongarch@lists.linux.dev, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-openrisc@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-um@lists.infradead.org, x86@kernel.org, Ingo Molnar , linux-block@vger.kernel.org, initramfs@vger.kernel.org, linux-api@vger.kernel.org, linux-doc@vger.kernel.org, linux-efi@vger.kernel.org, linux-ext4@vger.kernel.org, "Theodore Y . Ts'o" , linux-acpi@vger.kernel.org, Michal Simek , devicetree@vger.kernel.org, Luis Chamberlain , Kees Cook , Thorsten Blum , Heiko Carstens , patches@lists.linux.dev References: <20250913003842.41944-1-safinaskar@gmail.com> <20250913003842.41944-22-safinaskar@gmail.com> <20250914131321.df00dfc835be48c10f4cce4b@linux-foundation.org> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; keydata= xsFNBFVDQq4BEAC6KeLOfFsAvFMBsrCrJ2bCalhPv5+KQF2PS2+iwZI8BpRZoV+Bd5kWvN79 cFgcqTTuNHjAvxtUG8pQgGTHAObYs6xeYJtjUH0ZX6ndJ33FJYf5V3yXqqjcZ30FgHzJCFUu JMp7PSyMPzpUXfU12yfcRYVEMQrmplNZssmYhiTeVicuOOypWugZKVLGNm0IweVCaZ/DJDIH gNbpvVwjcKYrx85m9cBVEBUGaQP6AT7qlVCkrf50v8bofSIyVa2xmubbAwwFA1oxoOusjPIE J3iadrwpFvsZjF5uHAKS+7wHLoW9hVzOnLbX6ajk5Hf8Pb1m+VH/E8bPBNNYKkfTtypTDUCj NYcd27tjnXfG+SDs/EXNUAIRefCyvaRG7oRYF3Ec+2RgQDRnmmjCjoQNbFrJvJkFHlPeHaeS BosGY+XWKydnmsfY7SSnjAzLUGAFhLd/XDVpb1Een2XucPpKvt9ORF+48gy12FA5GduRLhQU vK4tU7ojoem/G23PcowM1CwPurC8sAVsQb9KmwTGh7rVz3ks3w/zfGBy3+WmLg++C2Wct6nM Pd8/6CBVjEWqD06/RjI2AnjIq5fSEH/BIfXXfC68nMp9BZoy3So4ZsbOlBmtAPvMYX6U8VwD TNeBxJu5Ex0Izf1NV9CzC3nNaFUYOY8KfN01X5SExAoVTr09ewARAQABzSVLcnp5c3p0b2Yg S296bG93c2tpIDxrcnprQGtlcm5lbC5vcmc+wsGVBBMBCgA/AhsDBgsJCAcDAgYVCAIJCgsE FgIDAQIeAQIXgBYhBJvQfg4MUfjVlne3VBuTQ307QWKbBQJoF1BKBQkWlnSaAAoJEBuTQ307 QWKbHukP/3t4tRp/bvDnxJfmNdNVn0gv9ep3L39IntPalBFwRKytqeQkzAju0whYWg+R/rwp +r2I1Fzwt7+PTjsnMFlh1AZxGDmP5MFkzVsMnfX1lGiXhYSOMP97XL6R1QSXxaWOpGNCDaUl ajorB0lJDcC0q3xAdwzRConxYVhlgmTrRiD8oLlSCD5baEAt5Zw17UTNDnDGmZQKR0fqLpWy 786Lm5OScb7DjEgcA2PRm17st4UQ1kF0rQHokVaotxRM74PPDB8bCsunlghJl1DRK9s1aSuN hL1Pv9VD8b4dFNvCo7b4hfAANPU67W40AaaGZ3UAfmw+1MYyo4QuAZGKzaP2ukbdCD/DYnqi tJy88XqWtyb4UQWKNoQqGKzlYXdKsldYqrLHGoMvj1UN9XcRtXHST/IaLn72o7j7/h/Ac5EL 8lSUVIG4TYn59NyxxAXa07Wi6zjVL1U11fTnFmE29ALYQEXKBI3KUO1A3p4sQWzU7uRmbuxn naUmm8RbpMcOfa9JjlXCLmQ5IP7Rr5tYZUCkZz08LIfF8UMXwH7OOEX87Y++EkAB+pzKZNNd hwoXulTAgjSy+OiaLtuCys9VdXLZ3Zy314azaCU3BoWgaMV0eAW/+gprWMXQM1lrlzvwlD/k whyy9wGf0AEPpLssLVt9VVxNjo6BIkt6d1pMg6mHsUEVzsFNBFVDXDQBEADNkrQYSREUL4D3 Gws46JEoZ9HEQOKtkrwjrzlw/tCmqVzERRPvz2Xg8n7+HRCrgqnodIYoUh5WsU84N03KlLue MNsWLJBvBaubYN4JuJIdRr4dS4oyF1/fQAQPHh8Thpiz0SAZFx6iWKB7Qrz3OrGCjTPcW6ei OMheesVS5hxietSmlin+SilmIAPZHx7n242u6kdHOh+/SyLImKn/dh9RzatVpUKbv34eP1wA GldWsRxbf3WP9pFNObSzI/Bo3kA89Xx2rO2roC+Gq4LeHvo7ptzcLcrqaHUAcZ3CgFG88CnA 6z6lBZn0WyewEcPOPdcUB2Q7D/NiUY+HDiV99rAYPJztjeTrBSTnHeSBPb+qn5ZZGQwIdUW9 YegxWKvXXHTwB5eMzo/RB6vffwqcnHDoe0q7VgzRRZJwpi6aMIXLfeWZ5Wrwaw2zldFuO4Dt 91pFzBSOIpeMtfgb/Pfe/a1WJ/GgaIRIBE+NUqckM+3zJHGmVPqJP/h2Iwv6nw8U+7Yyl6gU BLHFTg2hYnLFJI4Xjg+AX1hHFVKmvl3VBHIsBv0oDcsQWXqY+NaFahT0lRPjYtrTa1v3tem/ JoFzZ4B0p27K+qQCF2R96hVvuEyjzBmdq2esyE6zIqftdo4MOJho8uctOiWbwNNq2U9pPWmu 4vXVFBYIGmpyNPYzRm0QPwARAQABwsF8BBgBCgAmAhsMFiEEm9B+DgxR+NWWd7dUG5NDfTtB YpsFAmgXUF8FCRaWWyoACgkQG5NDfTtBYptO0w//dlXJs5/42hAXKsk+PDg3wyEFb4NpyA1v qmx7SfAzk9Hf6lWwU1O6AbqNMbh6PjEwadKUk1m04S7EjdQLsj/MBSgoQtCT3MDmWUUtHZd5 RYIPnPq3WVB47GtuO6/u375tsxhtf7vt95QSYJwCB+ZUgo4T+FV4hquZ4AsRkbgavtIzQisg Dgv76tnEv3YHV8Jn9mi/Bu0FURF+5kpdMfgo1sq6RXNQ//TVf8yFgRtTUdXxW/qHjlYURrm2 H4kutobVEIxiyu6m05q3e9eZB/TaMMNVORx+1kM3j7f0rwtEYUFzY1ygQfpcMDPl7pRYoJjB dSsm0ZuzDaCwaxg2t8hqQJBzJCezTOIkjHUsWAK+tEbU4Z4SnNpCyM3fBqsgYdJxjyC/tWVT AQ18NRLtPw7tK1rdcwCl0GFQHwSwk5pDpz1NH40e6lU+NcXSeiqkDDRkHlftKPV/dV+lQXiu jWt87ecuHlpL3uuQ0ZZNWqHgZoQLXoqC2ZV5KrtKWb/jyiFX/sxSrodALf0zf+tfHv0FZWT2 zHjUqd0t4njD/UOsuIMOQn4Ig0SdivYPfZukb5cdasKJukG1NOpbW7yRNivaCnfZz6dTawXw XRIV/KDsHQiyVxKvN73bThKhONkcX2LWuD928tAR6XMM2G5ovxLe09vuOzzfTWQDsm++9UKF a/A= In-Reply-To: <20250914131321.df00dfc835be48c10f4cce4b@linux-foundation.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 14/09/2025 22:13, Andrew Morton wrote: > On Sun, 14 Sep 2025 12:06:24 +0200 Krzysztof Kozlowski wrote: > >>> Documentation/admin-guide/kernel-parameters.txt | 3 +-- >>> Documentation/arch/m68k/kernel-options.rst | 9 ++------- >>> arch/arm/boot/dts/arm/integratorap.dts | 2 +- >>> arch/arm/boot/dts/arm/integratorcp.dts | 2 +- >>> arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-cmm.dts | 2 +- >>> .../boot/dts/aspeed/aspeed-bmc-facebook-galaxy100.dts | 2 +- >>> .../arm/boot/dts/aspeed/aspeed-bmc-facebook-minipack.dts | 2 +- >>> .../arm/boot/dts/aspeed/aspeed-bmc-facebook-wedge100.dts | 2 +- >>> arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-wedge40.dts | 2 +- >>> arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-yamp.dts | 2 +- >>> .../boot/dts/aspeed/ast2600-facebook-netbmc-common.dtsi | 2 +- >> >> No, don't do that. DTS is always separate. > > Why can't DTS changes be carried in a different tree? It must be carried in a different kernel tree and it must be ALWAYS a separate commit. Embedding it in the middle of this patchset and in the middle of some other commit breaks these two rules. If you asked why it cannot be carried by VFS (or by any non-SoC tree in general), it is because DTS is completely independent hardware description, so by keeping it on separate tree we enforce that rule of lack of dependency between DTS and any driver or core code. If there is a dependency here, then it would be a NAK, because there cannot be such - it would be a breach of contract for outside users (DTS is shared with other, non-Linux projects). Best regards, Krzysztof