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Davis" , "Shah, Tanmay" , Saravana Kannan , Andrew Morton , Bjorn Andersson , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Patrice Chotard , Maxime Coquelin , Alexandre Torgue , Chen-Yu Tsai , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-remoteproc@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com References: <20250423-dt-memory-region-v2-v2-0-2fbd6ebd3c88@kernel.org> <322d366c-1564-4b06-9362-28fe451a35e7@nxp.com> Content-Language: en-US From: Iuliana Prodan In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-ClientProxiedBy: AS4P189CA0037.EURP189.PROD.OUTLOOK.COM (2603:10a6:20b:5dd::8) To DU2PR04MB8774.eurprd04.prod.outlook.com (2603:10a6:10:2e1::21) Precedence: bulk X-Mailing-List: imx@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email 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DU2PR04MB8774.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Apr 2025 21:40:45.3507 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: +bj2zKYqrCfal4xcKlXwj8RbUIAtOY1JuxfbKYP9Q+SZwn8zTC9tl62kc/wuVYqsgbsgUJY0GzpUfN1XSwxnmQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AS8PR04MB8708 On 4/28/2025 3:23 PM, Rob Herring wrote: > On Fri, Apr 25, 2025 at 6:34 PM Iuliana Prodan wrote: >> Hello Mathieu, Rob, >> >> I've tested imx_dsp_rproc and it fails with: >> >> [ 39.743770] Unable to handle kernel paging request at virtual address >> ffffffffffffffea >> ... >> [ 39.805078] Hardware name: NXP i.MX8MPlus EVK board (DT) >> [ 39.810390] pstate: 00000005 (nzcv daif -PAN -UAO -TCO -DIT -SSBS >> BTYPE=--) >> [ 39.817353] pc : __pi_memset_generic+0x50/0x188 >> [ 39.821892] lr : imx_dsp_rproc_prepare+0x3a4/0xea4 [imx_dsp_rproc] >> [ 39.828079] sp : ffff8000853dbb10 >> [ 39.831396] x29: ffff8000853dbb90 x28: 0000000092400000 x27: >> ffff80007a36d3d8 >> [ 39.838540] x26: ffff0000d0a5e410 x25: ffff80007a36d3f0 x24: >> 0000000000000004 >> [ 39.845685] x23: ffff0000d5414880 x22: ffff0000d5e1dce8 x21: >> 0000000000000000 >> [ 39.852827] x20: ffff0000d5e1db98 x19: ffff0000d5414b80 x18: >> 00000000ffffffff >> [ 39.859970] x17: 202c656c69687720 x16: 3e2074756f657672 x15: >> ffff800081f8d050 >> [ 39.867114] x14: ffff0000db584680 x13: 0000000000000003 x12: >> 00007fffa3330000 >> [ 39.874257] x11: 0000000000000004 x10: 0000000000000ab0 x9 : >> 0000000000000000 >> [ 39.881400] x8 : ffffffffffffffea x7 : 0000000000000000 x6 : >> 000000000000003f >> [ 39.888546] x5 : 0000000000000040 x4 : 0000000000000006 x3 : >> 0000000000000004 >> [ 39.895689] x2 : 0000000000008000 x1 : 0000000000000000 x0 : >> ffffffffffffffea >> [ 39.902837] Call trace: >> [ 39.905284] __pi_memset_generic+0x50/0x188 (P) >> [ 39.909821] rproc_boot+0x2c0/0x524 >> [ 39.913317] state_store+0x40/0x100 >> [ 39.916812] dev_attr_store+0x18/0x2c >> [ 39.920478] sysfs_kf_write+0x7c/0x94 >> [ 39.924146] kernfs_fop_write_iter+0x120/0x1e8 >> [ 39.928598] vfs_write+0x244/0x37c >> [ 39.932008] ksys_write+0x70/0x110 >> [ 39.935413] __arm64_sys_write+0x1c/0x28 >> [ 39.939342] invoke_syscall+0x48/0x104 >> [ 39.943094] el0_svc_common.constprop.0+0xc0/0xe0 >> [ 39.947805] do_el0_svc+0x1c/0x28 >> [ 39.951123] el0_svc+0x30/0xcc >> [ 39.954188] el0t_64_sync_handler+0x10c/0x138 >> [ 39.958549] el0t_64_sync+0x198/0x19c >> [ 39.962222] Code: d65f03c0 cb0803e4 f2400c84 54000080 (a9001d07) >> [ 39.968317] ---[ end trace 0000000000000000 ]--- >> >> The problem seems to be when computing `cpu_addr = >> devm_ioremap_resource_wc(dev, &res);`, in patch 4. >> In `__devm_ioremap_resource` (see [1]), it's expecting the resource type >> to be `IORESOURCE_MEM`, which is not the case here (at least the flags >> are nowhere set for this). > Thanks for testing and diagnosing. IORESOURCE_MEM needs to be set. Can > you test with this change: > > index f87915cce961..00c93585758f 100644 > --- a/drivers/of/of_reserved_mem.c > +++ b/drivers/of/of_reserved_mem.c > @@ -771,6 +771,7 @@ int of_reserved_mem_region_to_resource(const > struct device_node *np, > return -EINVAL; > > resource_set_range(res, rmem->base, rmem->size); > + res->flags = IORESOURCE_MEM; > res->name = rmem->name; > return 0; > } I've tested with this change, and is all good now. Iulia