This series introduces new features to the livepatch functionality as briefly discussed during Xen Developer Summit 2019: [a] and [b]. It also provides a few fixes and some small improvements.
IMPROVEMENTS: 1. Strip redundant or transient symbols from resulting object files: [6], [7] This change limits the size of resulting modules by dropping unneeded bits. FEATURES: For details see cover letter of xen series: [c] 1. independent modules (patches: [1]) 2. pre- and post- apply|revert actions hooks (patches: [2]) 3. apply|revert actions replacement hooks (patches: [3], [4]) 4. inline asm hotpatching expectations (patches: [5]) [a] https://wiki.xenproject.org/wiki/Design_Sessions_2019#LivePatch_improvements_and_features [b] https://lists.xenproject.org/archives/html/xen-devel/2019-07/msg00846.html [c] [PATCH 00/14] livepatch: new features and fixes Merged in v1: livepatch-gcc: Allow toolchain command with versions livepatch-gcc: Ignore built_in.o and prelink.o object files livepatch-build: Do not follow every symlink for patch file livepatch-build: Handle newly created object files common: Add is_standard_section() helper function common: Add is_referenced_section() helper function create-diff-object: Add is_special_section() helper function livepatch-build: detect special section group sizes create-diff-object: Add new entries to special sections array create-diff-object: Do not include all .rodata sections create-diff-object: Do not create empty .livepatch.funcs section create-diff-object: Extend patchability verification: STN_UNDEF create-diff-object: Strip all undefined entires of known size Pawel Wieczorkiewicz (7): [1] livepatch-build: Embed hypervisor build id into every hotpatch [2] create-diff-object: Handle extra pre-|post- hooks [3] create-diff-object: Handle optional apply|revert hooks [4] create-diff-object: Add support for applied/reverted marker [5] create-diff-object: Add support for expectations [6] livepatch-build: Strip transient or unneeded symbols [7] livepatch-build: Strip all metadata symbols from hotpatch modules common.h | 13 +++++++- create-diff-object.c | 82 ++++++++++++++++++++++++++++++++++++++-------- livepatch-build | 92 +++++++++++++++++++++++++++++++++++++++++++++++++++- 3 files changed, 171 insertions(+), 16 deletions(-) -- 2.16.5 Amazon Development Center Germany GmbH Krausenstr. 38 10117 Berlin Geschaeftsfuehrung: Christian Schlaeger, Ralf Herbrich Eingetragen am Amtsgericht Charlottenburg unter HRB 149173 B Sitz: Berlin Ust-ID: DE 289 237 879 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
