From: George Guo <[email protected]> Enable ARCH_SUPPORTS_KEXEC_HANDOVER for 64-bit LoongArch. It selects EFI_KHO whenever KEXEC_HANDOVER is enabled, so LoongArch uses the architecture-agnostic EFI configuration table channel (LINUX_EFI_KEXEC_HANDOVER_GUID) introduced by this series to carry the KHO state across kexec.
LoongArch boots through EFI without a device tree, so it cannot use the /chosen FDT path that arm64 and riscv use; the EFI configuration table channel is its handover transport. No arch-specific setup.c reader or machine_kexec_file.c writer is needed -- both live in the generic EFI code. Co-developed-by: Kexin Liu <[email protected]> Signed-off-by: Kexin Liu <[email protected]> Signed-off-by: George Guo <[email protected]> --- arch/loongarch/Kconfig | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index a21f51e5815e..5eaa65578d58 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -685,6 +685,10 @@ config ARCH_SUPPORTS_KEXEC config ARCH_SUPPORTS_KEXEC_FILE def_bool 64BIT +config ARCH_SUPPORTS_KEXEC_HANDOVER + def_bool 64BIT && EFI_STUB + select EFI_KHO if KEXEC_HANDOVER + config ARCH_SELECTS_KEXEC_FILE def_bool 64BIT depends on KEXEC_FILE -- 2.53.0
