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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>
41 lines
1.3 KiB
Plaintext
41 lines
1.3 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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menu "Live Update and Kexec HandOver"
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depends on !DEFERRED_STRUCT_PAGE_INIT
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config KEXEC_HANDOVER
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bool "kexec handover"
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depends on ARCH_SUPPORTS_KEXEC_HANDOVER && ARCH_SUPPORTS_KEXEC_FILE
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depends on !DEFERRED_STRUCT_PAGE_INIT
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select MEMBLOCK_KHO_SCRATCH
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select KEXEC_FILE
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select LIBFDT
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select CMA
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help
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Allow kexec to hand over state across kernels by generating and
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passing additional metadata to the target kernel. This is useful
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to keep data or state alive across the kexec. For this to work,
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both source and target kernels need to have this option enabled.
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config KEXEC_HANDOVER_DEBUG
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bool "Enable Kexec Handover debug checks"
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depends on KEXEC_HANDOVER
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help
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This option enables extra sanity checks for the Kexec Handover
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subsystem. Since, KHO performance is crucial in live update
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scenarios and the extra code might be adding overhead it is
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only optionally enabled.
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config KEXEC_HANDOVER_DEBUGFS
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bool "kexec handover debugfs interface"
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default KEXEC_HANDOVER
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depends on KEXEC_HANDOVER
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select DEBUG_FS
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help
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Allow to control kexec handover device tree via debugfs
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interface, i.e. finalize the state or aborting the finalization.
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Also, enables inspecting the KHO fdt trees with the debugfs binary
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blobs.
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endmenu
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