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[2620:137:e000::1:20]) by mx.google.com with ESMTP id hq26-20020a1709073f1a00b007addc76341csi3247360ejc.25.2022.11.25.05.38.41; Fri, 25 Nov 2022 05:39:05 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@canonical.com header.s=20210705 header.b=gybrPLUq; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=canonical.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229792AbiKYNhW (ORCPT + 99 others); Fri, 25 Nov 2022 08:37:22 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36178 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229784AbiKYNhU (ORCPT ); Fri, 25 Nov 2022 08:37:20 -0500 Received: from smtp-relay-internal-1.canonical.com (smtp-relay-internal-1.canonical.com [185.125.188.123]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9BE1127171 for ; Fri, 25 Nov 2022 05:37:17 -0800 (PST) Received: from mail-ej1-f71.google.com (mail-ej1-f71.google.com [209.85.218.71]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by smtp-relay-internal-1.canonical.com (Postfix) with ESMTPS id 607943F202 for ; Fri, 25 Nov 2022 13:37:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=canonical.com; s=20210705; t=1669383435; bh=8DnTlIACDbzEtLRf6uyG90k2lVADApi5Q0dzsALoGgs=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=gybrPLUqAFnpSc7NoZM0A616yXIXzfLYLPUSk79gfOb8kTPlXiJoc2QUyn3Hx9oCn ewDrTwgKkWn3Djf+r2kojXpef6fP7xMZhosMbekVPS4aHwH8x3QsWEefLod+0IfbL6 LjuVTqvn3ys64wMuYIaDmrrzm7IK91Xuz4oUW2iUBoXQIRbmLAno+/sQu+jQSUqBWw b9BEqxY0zJrLnPDfGGJC+b52/1KwdhL5OXog14EdFzd/1N27oQavwXNysdUie3jWsa vcEZf6mPIsQd3Wmsg9/cI6fwnaVWXdqIs8df35yGo8BgAKUWgn9k5zP9IZmuhvZqKs rmGp423BPDX5g== Received: by mail-ej1-f71.google.com with SMTP id hr21-20020a1709073f9500b007b29ccd1228so2286881ejc.16 for ; Fri, 25 Nov 2022 05:37:15 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=8DnTlIACDbzEtLRf6uyG90k2lVADApi5Q0dzsALoGgs=; b=P+h/ej6H1zUFjXxLYg3W8mvw0QAgZt1TT1VdgmcC/dvTVLH8bhKOiP1xymdcF+UXqy t+ds7AE9ibuhj2BCWXA2/anyYLG/5FYQ4RH8UWr8v8SX4/uox46FIZuHDv4lEaaUhW9T 97xHHLTKHd1LlAdYT5GVyPu8se8hRCz+0QQvOIPHGHVUq39SNj2ccqahYvJHnxhwQzxH YNOV41iNgVj7AhJ9/svW2mn+m3R+bBclsMN+uN2l6FmQ+Qe1UclTVqx8anHd8npXWWrd y1yKpuBZyYOT1JOGK47v+mTccU/j0MaolR8rlP1gMT+YXQGPt/bCuPcHUT4x759jvbNp powA== X-Gm-Message-State: ANoB5pnY4pYVtYrKywtZzWfwkeJvbfhu1qLGP0QKVAXWjSEH3rgnp9st 0lv7stTNbxwkGF+1d4TQx9KNeo8TJ6KP+X+lTWwJeea7dzQkQdw+tsRiMddq6N9mSBOx+lqVRWR GvhRP/w0Yptj7HMaCjJzowCgWbbUfP2WBBLHCeEma6Q== X-Received: by 2002:a17:906:68a:b0:78d:3188:9116 with SMTP id u10-20020a170906068a00b0078d31889116mr32469850ejb.176.1669383435065; Fri, 25 Nov 2022 05:37:15 -0800 (PST) X-Received: by 2002:a17:906:68a:b0:78d:3188:9116 with SMTP id u10-20020a170906068a00b0078d31889116mr32469823ejb.176.1669383434765; Fri, 25 Nov 2022 05:37:14 -0800 (PST) Received: from righiandr-XPS-13-7390.homenet.telecomitalia.it ([95.236.177.174]) by smtp.gmail.com with ESMTPSA id va5-20020a170907d00500b0078d0981516esm1585372ejc.38.2022.11.25.05.37.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 25 Nov 2022 05:37:14 -0800 (PST) From: Andrea Righi To: Paul Walmsley , Palmer Dabbelt Cc: Emil Renner Berthing , linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH] riscv: increase boot command line size to 1K Date: Fri, 25 Nov 2022 14:37:13 +0100 Message-Id: <20221125133713.314796-1-andrea.righi@canonical.com> X-Mailer: git-send-email 2.37.2 MIME-Version: 1.0 X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1750475520634606948?= X-GMAIL-MSGID: =?utf-8?q?1750475520634606948?= Kernel parameters string is limited to 512 characters on riscv (using the default from include/uapi/asm-generic/setup.h). In some testing environments (e.g., qemu with long kernel parameters string) we may exceed this limit, triggering errors like the following: [ 3.331893] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000000 [ 3.332625] CPU: 2 PID: 1 Comm: sh Not tainted 6.1.0-rc6-kc #1 [ 3.333233] Hardware name: riscv-virtio,qemu (DT) [ 3.333550] Call Trace: [ 3.333736] [] dump_backtrace+0x1c/0x24 [ 3.334053] [] show_stack+0x2c/0x38 [ 3.334260] [] dump_stack_lvl+0x5a/0x7c [ 3.334483] [] dump_stack+0x14/0x1c [ 3.334687] [] panic+0x116/0x2d0 [ 3.334878] [] do_exit+0x80a/0x810 [ 3.335079] [] do_group_exit+0x24/0x70 [ 3.335287] [] __wake_up_parent+0x0/0x20 [ 3.335502] [] ret_from_syscall+0x0/0x2 [ 3.335857] SMP: stopping secondary CPUs [ 3.337561] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000000 ]--- It seems reasonable enough to increase the default command line size to 1024, like arm, to prevent issues like the one reported above. Signed-off-by: Andrea Righi --- arch/riscv/include/asm/setup.h | 7 +++++++ arch/riscv/include/uapi/asm/setup.h | 7 +++++++ 2 files changed, 14 insertions(+) create mode 100644 arch/riscv/include/asm/setup.h create mode 100644 arch/riscv/include/uapi/asm/setup.h diff --git a/arch/riscv/include/asm/setup.h b/arch/riscv/include/asm/setup.h new file mode 100644 index 000000000000..f4fe549aab40 --- /dev/null +++ b/arch/riscv/include/asm/setup.h @@ -0,0 +1,7 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +#ifndef __ASMRISCV_SETUP_H +#define __ASMRISCV_SETUP_H + +#include + +#endif /* __ASMRISCV_SETUP_H */ diff --git a/arch/riscv/include/uapi/asm/setup.h b/arch/riscv/include/uapi/asm/setup.h new file mode 100644 index 000000000000..5738f93ae437 --- /dev/null +++ b/arch/riscv/include/uapi/asm/setup.h @@ -0,0 +1,7 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _UAPI__ASMRISCV_SETUP_H +#define _UAPI__ASMRISCV_SETUP_H + +#define COMMAND_LINE_SIZE 1024 + +#endif /* _UAPI__ASMRISCV_SETUP_H */