KHO支持多版本数据兼容 · v1

Move the logic to set the blob data in a subtree node into a separate function to allow for re-use. No functional change. Signed-off-by: Logan Odell loganodell@google.com — kernel/liveupdate/kex

Add explicit version support to KHO by creating subnodes with the version number. The first caller to kho_add_subtree_version will create the parent node and versioned subnode. Subsequent calls with a

Update kho_in_debugfs_init to search for versioned subnodes (depth 2) and expose them as name-version in the input debugfs. This ensures versioned subtrees are visible to userspace for debugging, matc

Add new test cases to test_kho.c to verify saving and restoring multiple versions of a subtree. The test preserves versions 1 and 2 of “kho_test_ver” and retrieves them, verifying their contents. It a