From: Alexander Graf <graf@xxxxxxxxxx> We have all generic code in place now to support Kexec with KHO. This patch adds a config option that depends on architecture support to enable KHO support. Signed-off-by: Alexander Graf <graf@xxxxxxxxxx> Co-developed-by: Mike Rapoport (Microsoft) <rppt@xxxxxxxxxx> Signed-off-by: Mike Rapoport (Microsoft) <rppt@xxxxxxxxxx> --- kernel/Kconfig.kexec | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/kernel/Kconfig.kexec b/kernel/Kconfig.kexec index 4d111f871951..332824d8d6dc 100644 --- a/kernel/Kconfig.kexec +++ b/kernel/Kconfig.kexec @@ -95,6 +95,19 @@ config KEXEC_JUMP Jump between original kernel and kexeced kernel and invoke code in physical address mode via KEXEC +config KEXEC_HANDOVER + bool "kexec handover" + depends on ARCH_SUPPORTS_KEXEC_HANDOVER && ARCH_SUPPORTS_KEXEC_FILE + select MEMBLOCK_KHO_SCRATCH + select KEXEC_FILE + select LIBFDT + select CMA + help + Allow kexec to hand over state across kernels by generating and + passing additional metadata to the target kernel. This is useful + to keep data or state alive across the kexec. For this to work, + both source and target kernels need to have this option enabled. + config CRASH_DUMP bool "kernel crash dumps" default ARCH_DEFAULT_CRASH_DUMP -- 2.47.2
