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Sun, 8 Apr 2018 20:17:59 -0400 From: Sasha Levin To: "stable@vger.kernel.org" , "linux-kernel@vger.kernel.org" CC: Vladimir Murzin , Russell King , Sasha Levin Subject: [PATCH AUTOSEL for 4.15 052/189] ARM: 8738/1: Disable CONFIG_DEBUG_VIRTUAL for NOMMU Thread-Topic: [PATCH AUTOSEL for 4.15 052/189] ARM: 8738/1: Disable CONFIG_DEBUG_VIRTUAL for NOMMU Thread-Index: AQHTz5gkj7QvW1DtdkOIMoTR+QG0pQ== Date: Mon, 9 Apr 2018 00:17:27 +0000 Message-ID: <20180409001637.162453-52-alexander.levin@microsoft.com> References: <20180409001637.162453-1-alexander.levin@microsoft.com> In-Reply-To: <20180409001637.162453-1-alexander.levin@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;DM5PR2101MB1046;7:x/HlxY6DxMbeXu8JLXPR93XhikbZcpoqT0vySE8BDzX68ExJyhBmgi91yJN3G2Zp0bmJTOYmxuIX5KoMUjxbOqP/kUthc7/+1+C6NwEOO1GXfQ5nEGLgAcvCp58GCBZcv2Uhb+mpiutco17q3B+C42q/KANsEaOSSwH490vcPtxYvNh7907qB3ycj/Ahwnav3xg6L+TF8v8vFVdc4EeNX9M/ShC4jH1N/kXtCo/R2odoFIUAgSr6P28fI9jFKfqH;20:43DeBi97kP0R7xXlWNnEAuXf5zO2VbbhVnali8RLmFfZxjSf7liTKayo3gbSmfZNFrzwbOssvf7werD0hECuSFvhk7Ikho27Ji03J0G3aB8R+RRYcDzzmyjpsrAZ80GN4O2nCm8hsF+JMF+D5ZoOJIEpH8QG1xnuKyvp6iGgTP0= X-MS-Office365-Filtering-Correlation-Id: 41f49a43-4840-4a44-51e5-08d59daf563a x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(4534165)(4627221)(201703031133081)(201702281549075)(5600026)(4604075)(3008032)(48565401081)(2017052603328)(7193020);SRVR:DM5PR2101MB1046; 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x-microsoft-antispam-message-info: Jdy2wPl14AHVZwswVrpZaKkuNd+jLbkx/IRRw+TmFBsqfYSeExBPeDKAIKuQhqxAy05xk1LjZcgxq3N204yGE2MnMF8y3JgHbjd1Z6EE77fCJTTbXBxh66LrUbX4J4TCGQxkJqVsbYCnS8jhDbdAbV7Lcey/YxSnAhTSRxg5zmvIh0ZBl6yjG/UuM1Za0Tv5xXv6zC8bJts+plPNaA0scVmxNzffxQCKPJfN1gWYkBLRXNgjxgxZ63mbhCBMBaF0BCvns5oF/dWcegIbQzqe3euqtKiMaTsXI6XHkD+BHxb8rPG1Zzmk6w04lPWiVNxN1F3JY+bUIxSDdwmytFF9ylPdQ5mn81Ca2Xt0NbKkpn2IpLuHfP04fXFFmHuDC6uhXcuLyXghC9lXicMolig1gbTnRgcFY9wMzhTF2J5J2Yw= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: 41f49a43-4840-4a44-51e5-08d59daf563a X-MS-Exchange-CrossTenant-originalarrivaltime: 09 Apr 2018 00:17:27.1191 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR2101MB1046 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: From: Vladimir Murzin [ Upstream commit c7780ab56c091a9ba95a3278e6e1d9c73afb5052 ] While running MPS2 platform (NOMMU) with DTB placed below PHYS_OFFSET following warning poped up: ------------[ cut here ]------------ WARNING: CPU: 0 PID: 0 at arch/arm/mm/physaddr.c:42 __virt_to_phys+0x2f/0x4= 0 virt_to_phys used for non-linear address: 00004000 (0x4000) CPU: 0 PID: 0 Comm: swapper Not tainted 4.15.0-rc1-5a31bf2-clean+ #2767 Hardware name: MPS2 (Device Tree Support) [<2100bf39>] (unwind_backtrace) from [<2100b3ff>] (show_stack+0xb/0xc) [<2100b3ff>] (show_stack) from [<2100e697>] (__warn+0x87/0xac) [<2100e697>] (__warn) from [<2100e6db>] (warn_slowpath_fmt+0x1f/0x28) [<2100e6db>] (warn_slowpath_fmt) from [<2100c603>] (__virt_to_phys+0x2f/0x4= 0) [<2100c603>] (__virt_to_phys) from [<2116a499>] (early_init_fdt_reserve_sel= f+0xd/0x24) [<2116a499>] (early_init_fdt_reserve_self) from [<2116222d>] (arm_memblock_= init+0xb5/0xf8) [<2116222d>] (arm_memblock_init) from [<21161cad>] (setup_arch+0x38b/0x50e) [<21161cad>] (setup_arch) from [<21160455>] (start_kernel+0x31/0x280) [<21160455>] (start_kernel) from [<00000000>] ( (null)) random: get_random_bytes called from init_oops_id+0x17/0x2c with crng_init= =3D0 ---[ end trace 0000000000000000 ]--- Platforms without MMU support run with 1:1 (i.e. linear) memory mapping, so disable CONFIG_DEBUG_VIRTUAL. Fixes: e377cd8221eb ("ARM: 8640/1: Add support for CONFIG_DEBUG_VIRTUAL") Signed-off-by: Vladimir Murzin Signed-off-by: Russell King Signed-off-by: Sasha Levin --- arch/arm/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 51c8df561077..2c7e23e206da 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -4,7 +4,7 @@ config ARM default y select ARCH_CLOCKSOURCE_DATA select ARCH_DISCARD_MEMBLOCK if !HAVE_ARCH_PFN_VALID - select ARCH_HAS_DEBUG_VIRTUAL + select ARCH_HAS_DEBUG_VIRTUAL if MMU select ARCH_HAS_DEVMEM_IS_ALLOWED select ARCH_HAS_ELF_RANDOMIZE select ARCH_HAS_SET_MEMORY --=20 2.15.1