diff options
| author | Pasha Tatashin <pasha.tatashin@soleen.com> | 2025-11-01 10:23:23 -0400 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-11-27 14:24:33 -0800 |
| commit | 48a1b2321d763b5edeaf20bd4576d8c4b5df772b (patch) | |
| tree | af45c75f545cc0abc484f66fbb07ce2bffbe3241 /kernel/liveupdate/Kconfig | |
| parent | 99cd2ffac697be7f027344d77beee0dc04dcfdbd (diff) | |
| download | linux-48a1b2321d763b5edeaf20bd4576d8c4b5df772b.tar.gz linux-48a1b2321d763b5edeaf20bd4576d8c4b5df772b.tar.bz2 linux-48a1b2321d763b5edeaf20bd4576d8c4b5df772b.zip | |
liveupdate: kho: move to kernel/liveupdate
Move KHO to kernel/liveupdate/ in preparation of placing all Live Update
core kernel related files to the same place.
[pasha.tatashin@soleen.com: disable the menu when DEFERRED_STRUCT_PAGE_INIT]
Link: https://lkml.kernel.org/r/CA+CK2bAvh9Oa2SLfsbJ8zztpEjrgr_hr-uGgF1coy8yoibT39A@mail.gmail.com
Link: https://lkml.kernel.org/r/20251101142325.1326536-8-pasha.tatashin@soleen.com
Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Alexander Graf <graf@amazon.com>
Cc: Changyuan Lyu <changyuanl@google.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Pratyush Yadav <pratyush@kernel.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Simon Horman <horms@kernel.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Zhu Yanjun <yanjun.zhu@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'kernel/liveupdate/Kconfig')
| -rw-r--r-- | kernel/liveupdate/Kconfig | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/kernel/liveupdate/Kconfig b/kernel/liveupdate/Kconfig new file mode 100644 index 000000000000..eae428309332 --- /dev/null +++ b/kernel/liveupdate/Kconfig @@ -0,0 +1,40 @@ +# SPDX-License-Identifier: GPL-2.0-only + +menu "Live Update and Kexec HandOver" + depends on !DEFERRED_STRUCT_PAGE_INIT + +config KEXEC_HANDOVER + bool "kexec handover" + depends on ARCH_SUPPORTS_KEXEC_HANDOVER && ARCH_SUPPORTS_KEXEC_FILE + depends on !DEFERRED_STRUCT_PAGE_INIT + 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 KEXEC_HANDOVER_DEBUG + bool "Enable Kexec Handover debug checks" + depends on KEXEC_HANDOVER + help + This option enables extra sanity checks for the Kexec Handover + subsystem. Since, KHO performance is crucial in live update + scenarios and the extra code might be adding overhead it is + only optionally enabled. + +config KEXEC_HANDOVER_DEBUGFS + bool "kexec handover debugfs interface" + default KEXEC_HANDOVER + depends on KEXEC_HANDOVER + select DEBUG_FS + help + Allow to control kexec handover device tree via debugfs + interface, i.e. finalize the state or aborting the finalization. + Also, enables inspecting the KHO fdt trees with the debugfs binary + blobs. + +endmenu |