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Introduce the `include/linux/kho/abi/kexec_handover.h` header file, which defines the stable ABI for the KHO mechanism. This header specifies how preserved data is passed between kernels using an FDT. The ABI contract includes the FDT structure, node properties, and the "kho-v1" compatible string. By centralizing these definitions, this header serves as the foundational agreement for inter-kernel communication of preserved states, ensuring forward compatibility and preventing misinterpretation of data across kexec transitions. Since the ABI definitions are now centralized in the header files, the YAML files that previously described the FDT interfaces are redundant. These redundant files have therefore been removed. Link: https://lkml.kernel.org/r/20260105165839.285270-5-rppt@kernel.org Signed-off-by: Jason Miu <jasonmiu@google.com> Co-developed-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Reviewed-by: Pratyush Yadav <pratyush@kernel.org> Cc: Alexander Graf <graf@amazon.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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