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X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 25 Nov 2024 18:47:56.1752 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 9f055fdf-7c97-44be-79a5-08dd0d81ad14 X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d;Ip=[63.35.35.123];Helo=[64aa7808-outbound-1.mta.getcheckrecipient.com] X-MS-Exchange-CrossTenant-AuthSource: AM2PEPF0001C708.eurprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PA4PR08MB5949 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241125_104804_296043_A1340F9D X-CRM114-Status: GOOD ( 11.92 ) 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 Hi Ard, > Thanks for explaining the issue in more detail. Juno is a development > platform with a highly unusual boot stack so I don't think we need to > accommodate its quirks in the upstream kernel. > > And I still don't think this is something worth fixing in general. > Even if the machine description should be taken from ACPI tables only, > the DT /chosen node is always used as a conduit by the EFI stub, and > there are cases, e.g., for initrd info or the kaslr seed, where this > information might come from the bootloader, such as older GRUB builds. But suppose the DT loaded is corrupted (i.e.) no property for "#size-cells" in root node. In this case, uefi properties in chosen node will be installed in "corrupted" root node. my suggetion is not to check "acpi=force" option but verify dt which loaded via dtb= command line option or via configuration table in efi-stub code before updating fdt with uefi properties in chosen node so that prevent generating error message. Am I missing? Thanks