From patchwork Fri Oct 11 04:04:36 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tiwei Bie X-Patchwork-Id: 1995878 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; secure) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=Ca99PMIx; dkim=pass (1024-bit key; unprotected) header.d=antgroup.com header.i=@antgroup.com header.a=rsa-sha256 header.s=default header.b=RccJMdrS; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lists.infradead.org (client-ip=2607:7c80:54:3::133; helo=bombadil.infradead.org; envelope-from=linux-um-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=patchwork.ozlabs.org) Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1) server-digest SHA384) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4XPtLr6T9tz1xsc for ; Fri, 11 Oct 2024 15:05:07 +1100 (AEDT) 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:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=5FGxvE++JZaYDMBJ9FqjCNXnX4zxFosLHXSH+gJCOYg=; b=Ca99PMIxVXsiPauBZvJ8Q+mggL n4XFaJIUC4MMHKCcqF6zMQoWsLTgHS6DR0ZeRiQqHinWhZOhNWVAPhDUFVg8BS1p55a5lV7BEFK7k r7CU0Hadbqf8hXZp19yH9Rsxx6GcDUkerz6FqbyyX+OMLrRMaMJYMpCchG54McrBjUPF1PEHeWs7k 5RW3Ttlq6CIF7dFwuSB5izw1gUuziidIc0zT+IRJXrZwStTLgLp1kvBAlzdv+W7jhmRw10WKKd8JJ camwY3by6QoopYr8kMl4OaVVl68mQnwcW0WS4bPw8SVV8MV6+lzeWh0SV/Vj6iQdRXR5xOD2iAIA9 HdwISKQw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1sz6tk-0000000FCGJ-0vzi; Fri, 11 Oct 2024 04:05:04 +0000 Received: from out0-195.mail.aliyun.com ([140.205.0.195]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1sz6te-0000000FCBx-3snO for linux-um@lists.infradead.org; Fri, 11 Oct 2024 04:05:02 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=antgroup.com; s=default; t=1728619497; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=5FGxvE++JZaYDMBJ9FqjCNXnX4zxFosLHXSH+gJCOYg=; b=RccJMdrSA0xBpDROZg0wrWEsXKfhxf1EV8yo5GhyJM6RwNlNPzRJCzytmPAmXsVAPg2wleQH9oO7vsfpTCqwvkG4Kf3JIFOFz+BYjPKvjdB2vcIyGlonUnR5PWQoTXZpchtMrKqDvNiEwaU23tW9QeRWsfzNVRbxZhhsc0LDVgU= Received: from ubuntu..(mailfrom:tiwei.btw@antgroup.com fp:SMTPD_---.Ze33tyg_1728619495) by smtp.aliyun-inc.com; Fri, 11 Oct 2024 12:04:55 +0800 From: "Tiwei Bie" To: richard@nod.at, anton.ivanov@cambridgegreys.com, johannes@sipsolutions.net Cc: , , "Tiwei Bie" Subject: [PATCH 4/9] um: Do not propagate dtb parameter to kernel Date: Fri, 11 Oct 2024 12:04:36 +0800 Message-Id: <20241011040441.1586345-5-tiwei.btw@antgroup.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241011040441.1586345-1-tiwei.btw@antgroup.com> References: <20241011040441.1586345-1-tiwei.btw@antgroup.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241010_210459_402542_D19022D3 X-CRM114-Status: UNSURE ( 7.41 ) X-CRM114-Notice: Please train this message. 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[140.205.0.195 listed in sa-trusted.bondedsender.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-um@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-um" Errors-To: linux-um-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org This parameter is UML specific and is unknown to kernel. It should not be propagated to kernel, otherwise it will be passed to user space as an environment option by kernel with a warning like: Unknown kernel command line parameters "dtb=/foo", will be passed to user space. Signed-off-by: Tiwei Bie --- arch/um/kernel/dtb.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/um/kernel/dtb.c b/arch/um/kernel/dtb.c index 4954188a6a09..73369446ed1e 100644 --- a/arch/um/kernel/dtb.c +++ b/arch/um/kernel/dtb.c @@ -31,6 +31,7 @@ void uml_dtb_init(void) static int __init uml_dtb_setup(char *line, int *add) { + *add = 0; dtb = line; return 0; }