From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Fri, 14 Nov 2025 21:09:28 +0100 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1vK06q-0011PN-2D for lore@lore.pengutronix.de; Fri, 14 Nov 2025 21:09:28 +0100 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1vK06q-0002A5-56 for lore@pengutronix.de; Fri, 14 Nov 2025 21:09:28 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=q4j5a26v5qtgW4RmeJfn6aJCims54kN9Y+n4yq/18kg=; b=SUU8H9Qee33Maq8imkotoaI1j0 Pbz3xSptuFCVjnPWR0M0vJM+jZpt/CtTBXkGHXMXIrgz4AevgFRUGV//1y2A3wgNMdBRp6WroXLtK auGfBb3dOXtWj5B+ELsLfx2ZpMMX5LWMevU11p3BE48Blt9NkB5g1rUaK0HOT/yC/nM5boH2suizB RlXNFVdwJiFD7my+vKgWJMrnoallfHbnkTG4+Rs0pdXWnjP0Wt+oY/6ysYgUEAw7HVrHX/z/2Ya5L 8L2mRVg7nRYhCYrjWn/ZD9eXjpge4uORiDyHSKtFUBWGhWLAU+tVWpvuj3nqO2hSp+FgfscWxhQFk 5MAZZ1/w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vK06F-0000000D46c-1Q4G; Fri, 14 Nov 2025 20:08:51 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vK06C-0000000D461-2bd8 for barebox@lists.infradead.org; Fri, 14 Nov 2025 20:08:50 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1vK069-00022w-6z; Fri, 14 Nov 2025 21:08:45 +0100 Received: from pty.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::c5]) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1vK069-000Toc-06; Fri, 14 Nov 2025 21:08:45 +0100 Received: from sha by pty.whiteo.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1vK068-002mC7-2w; Fri, 14 Nov 2025 21:08:44 +0100 Date: Fri, 14 Nov 2025 21:08:44 +0100 From: Sascha Hauer To: Marco Felsch Cc: BAREBOX Message-ID: References: <20251113-soc-uid-v1-0-29a256e07144@pengutronix.de> <20251113-soc-uid-v1-2-29a256e07144@pengutronix.de> <20251114162213.tweck3zgcgot3t6t@pengutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20251114162213.tweck3zgcgot3t6t@pengutronix.de> X-Sent-From: Pengutronix Hildesheim X-URL: http://www.pengutronix.de/ X-Accept-Language: de,en X-Accept-Content-Type: text/plain X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251114_120848_658929_FB44FFE3 X-CRM114-Status: GOOD ( 22.10 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-4.0 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: Re: [PATCH 2/9] soc: imx8mp: Soc ID is 128bit X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) On Fri, Nov 14, 2025 at 05:22:13PM +0100, Marco Felsch wrote: > Hi Sascha, > > On 25-11-13, Sascha Hauer wrote: > > On i.MX8MP the SoC ID has 128 bits instead of 64 bits as on other i.MX8M > > SoCs. Read the remaining 64 bits which so far haven't been included in > > the SoC ID. > > Linux fixed this as well in a non-backward compatible way. Don't get me > wrong this is the correct fix and we should fix it, but this change will > certainly influence in-field systems badly which rely on the the current > behavior e.g. to set the `systemd.machine` or which make use of the UID > to construct a hostname which is later on passed to the kernel cmdline > via `systemd.hostname`. > > These systems now need to revert this change to archieve the same system > behavior. Can we add a Kconfig option or some function which can set the > soc_uid limit to keep these systems working. Yes, I've written about it in the cover letter. Sascha -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |