[PATCH 06/19] loongarch: define DPS root partition type UUID
Vincent Mailhol <[email protected]> Mon, 15 Jun 2026 18:09:02 +0200
| Newsgroups | org.kernel.vger.linux-efi,dev.linux.lists.loongarch,org.kernel.vger.linux-block,org.kernel.vger.linux-fsdevel,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <20260615-discoverable-root_partitions-v1-6-39c78fac42e2@kernel.org> |
DPS [1] assigns GPT partition type UUIDs to operating system partitions. Root partitions use architecture-specific type UUIDs so the OS can discover the intended root filesystem without relying on a root= cmdline option. Define DPS_ROOT_PARTITION_TYPE_UUID in asm/dps_root.h for LoongArch64 and select ARCH_HAS_DPS_ROOT_PARTITION_TYPE_UUID. [1] The Discoverable Partitions Specification (DPS) Link: https://uapi-group.org/specifications/specs/discoverable_partitions_specification/ Cc: Huacai Chen <[email protected]> Cc: WANG Xuerui <[email protected]> Cc: [email protected] Signed-off-by: Vincent Mailhol <[email protected]> --- arch/loongarch/Kconfig | 1 + arch/loongarch/include/asm/dps_root.h | 8 ++++++++ 2 files changed, 9 insertions(+) diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index 606597da46b8..64c27740b8a1 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -17,6 +17,7 @@ config LOONGARCH select ARCH_HAS_CPU_FINALIZE_INIT select ARCH_HAS_CURRENT_STACK_POINTER select ARCH_HAS_DEBUG_VM_PGTABLE + select ARCH_HAS_DPS_ROOT_PARTITION_TYPE_UUID select ARCH_HAS_FAST_MULTIPLIER select ARCH_HAS_FORTIFY_SOURCE select ARCH_HAS_KCOV diff --git a/arch/loongarch/include/asm/dps_root.h b/arch/loongarch/include/asm/dps_root.h new file mode 100644 index 000000000000..6022b60428ad --- /dev/null +++ b/arch/loongarch/include/asm/dps_root.h @@ -0,0 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef _ASM_LOONGARCH_DPS_ROOT_H +#define _ASM_LOONGARCH_DPS_ROOT_H + +#define DPS_ROOT_PARTITION_TYPE_UUID "77055800-792c-4f94-b39a-98c91b762bb6" + +#endif /* _ASM_LOONGARCH_DPS_ROOT_H */ -- 2.53.0