[PATCH v2 06/17] kexec: Add config option for KHO
From: Alexander Graf <graf@amazon.com>
Date: 2023-12-22 19:37:30
Also in:
kexec, linux-arm-kernel, linux-devicetree, linux-doc, linux-mm, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
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@amazon.com> --- kernel/Kconfig.kexec | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/kernel/Kconfig.kexec b/kernel/Kconfig.kexec
index 2fd510256604..909ab28f1341 100644
--- a/kernel/Kconfig.kexec
+++ b/kernel/Kconfig.kexec@@ -91,6 +91,19 @@ config KEXEC_JUMP Jump between original kernel and kexeced kernel and invoke code in physical address mode via KEXEC +config KEXEC_KHO + bool "kexec handover" + depends on ARCH_SUPPORTS_KEXEC_KHO + depends on KEXEC + select MEMBLOCK_SCRATCH + 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" depends on ARCH_SUPPORTS_CRASH_DUMP
--
2.40.1
Amazon Development Center Germany GmbH
Krausenstr. 38
10117 Berlin
Geschaeftsfuehrung: Christian Schlaeger, Jonathan Weiss
Eingetragen am Amtsgericht Charlottenburg unter HRB 149173 B
Sitz: Berlin
Ust-ID: DE 289 237 879