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client-ip=217.111.95.7; helo=mta.arri.de; Received: from mta.arri.de (217.111.95.7) by DB5PEPF00014B89.mail.protection.outlook.com (10.167.8.197) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8489.16 via Frontend Transport; Mon, 24 Feb 2025 12:54:34 +0000 Received: from N9W6SW14.arri.de (10.30.5.17) by mta.arri.de (10.10.18.5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1258.38; Mon, 24 Feb 2025 13:54:33 +0100 From: Christian Eggers To: Russell King , Yuntao Liu , "Russell King (Oracle)" , Arnd Bergmann , Linus Walleij , Greg Kroah-Hartman , Catalin Marinas , Nathan Chancellor , CC: , Christian Eggers Subject: [PATCH v2 2/2] ARM: avoid that vectors are removed during linker garbage collection Date: Mon, 24 Feb 2025 13:54:14 +0100 Message-ID: <20250224125414.2184-2-ceggers@arri.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250224125414.2184-1-ceggers@arri.de> References: <20250224125414.2184-1-ceggers@arri.de> MIME-Version: 1.0 X-Originating-IP: [10.30.5.17] X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DB5PEPF00014B89:EE_|AS8PR07MB8102:EE_ X-MS-Office365-Filtering-Correlation-Id: 53f2f877-6beb-4e29-4658-08dd54d26354 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|7416014|82310400026|1800799024|36860700013; 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X-OriginatorOrg: arri.de X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Feb 2025 12:54:34.2186 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 53f2f877-6beb-4e29-4658-08dd54d26354 X-MS-Exchange-CrossTenant-Id: e6a73a5a-614d-4c51-b3e3-53b660a9433a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=e6a73a5a-614d-4c51-b3e3-53b660a9433a;Ip=[217.111.95.7];Helo=[mta.arri.de] X-MS-Exchange-CrossTenant-AuthSource: DB5PEPF00014B89.eurprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: AS8PR07MB8102 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250224_045447_448526_0642E68A X-CRM114-Status: GOOD ( 10.56 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Without this, the vectors are removed if LD_DEAD_CODE_DATA_ELIMINATION is enabled. At startup, the CPU (silently) hangs in the undefined instruction exception as soon as the first timer interrupt arrives. Fixes: ed0f94102251 ("ARM: 9404/1: arm32: enable HAVE_LD_DEAD_CODE_DATA_ELIMINATION") Signed-off-by: Christian Eggers --- v2: - changed patch title arch/arm/include/asm/vmlinux.lds.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arm/include/asm/vmlinux.lds.h b/arch/arm/include/asm/vmlinux.lds.h index 7ba309f826f9..288057e07e69 100644 --- a/arch/arm/include/asm/vmlinux.lds.h +++ b/arch/arm/include/asm/vmlinux.lds.h @@ -126,16 +126,16 @@ /* Note: The LLD linker seems not to support marking input */ \ /* sections with KEEP() inside a OVERLAY statement */ \ .vectors 0xffff0000 : AT (__vectors_lma) { \ - *(.vectors) \ + KEEP(*(.vectors)) \ } \ .vectors.bhb.loop8 0xffff0000 : AT (__vectors_lma + \ SIZEOF(.vectors)) { \ - *(.vectors.bhb.loop8) \ + KEEP(*(.vectors.bhb.loop8)) \ } \ .vectors.bhb.bpiall 0xffff0000 : AT (__vectors_lma + \ SIZEOF(.vectors) + \ SIZEOF(.vectors.bhb.loop8)) { \ - *(.vectors.bhb.bpiall) \ + KEEP(*(.vectors.bhb.bpiall)) \ } \ ARM_LMA(__vectors, .vectors); \ ARM_LMA(__vectors_bhb_loop8, .vectors.bhb.loop8); \