On Thu, May 8, 2025 at 8:14 AM Sami Tolvanen <samitolvanen@xxxxxxxxxx> wrote: > > Hi, > > While looking deeper into the genksyms hacks that have been > needed during Android's 5.10 and 5.15 GKI lifecycles so far, > we found a few instances that are not covered by the existing > gendwarfksyms kABI stability rules. The first case involved > appending new members to a partially opaque data structure, and > the second case completely changing opaque types due to a large > backport that was necessary for both stability and security. > > These patches add rules that allow distribution maintainers > to deal with structure size changes, and as a last resort, to > completely override a type string used for version calculation. Applied to linux-kbuild. Thanks. > Sami > > --- > > v3: > - Added a patch to drop documentation section numbers based > on Masahiro's suggestion. > > v2: https://lore.kernel.org/r/20250505212401.3379699-6-samitolvanen@xxxxxxxxxx/ > - Cleaned up type string parsing based on Petr's feedback. > > v1: https://lore.kernel.org/r/20250430214049.2658716-6-samitolvanen@xxxxxxxxxx/ > > --- > > Sami Tolvanen (5): > gendwarfksyms: Clean up kABI rule look-ups > gendwarfksyms: Add a kABI rule to override byte_size attributes > gendwarfksyms: Add a kABI rule to override type strings > Documentation/kbuild: Drop section numbers > Documentation/kbuild: Add new gendwarfksyms kABI rules > > Documentation/kbuild/gendwarfksyms.rst | 141 +++++++++++++++++----- > scripts/gendwarfksyms/dwarf.c | 14 ++- > scripts/gendwarfksyms/examples/kabi.h | 21 +++- > scripts/gendwarfksyms/examples/kabi_ex.c | 7 ++ > scripts/gendwarfksyms/examples/kabi_ex.h | 101 +++++++++++++++- > scripts/gendwarfksyms/gendwarfksyms.h | 2 + > scripts/gendwarfksyms/kabi.c | 143 ++++++++++++++--------- > scripts/gendwarfksyms/types.c | 140 +++++++++++++++++++--- > 8 files changed, 470 insertions(+), 99 deletions(-) > > > base-commit: 92a09c47464d040866cf2b4cd052bc60555185fb > -- > 2.49.0.987.g0cc8ee98dc-goog > > -- Best Regards Masahiro Yamada
