Hi Ard, On Wed, Apr 26, 2023 at 3:09 PM Ard Biesheuvel <ardb@xxxxxxxxxx> wrote: > > Hello Yunhui, > > I am not sure this is a good idea: this is clearly intended for arm64, > which cannot use ACPI without the EFI memory map, which it uses to > cross reference memory opregion accesses, to determine the correct > memory type attributes. > Not only for arm64, but also other arches, such as riscv. For memory-related nodes, it will be done in the early scan of the device tree. > What is the use case you are trying to accommodate here? > Some bootloaders do not support uefi, such as coreboot, but need to support acpi, smbios. Thanks, Yunhui