On Tue, Mar 11, 2025 at 8:43 PM Nathan Chancellor <nathan@xxxxxxxxxx> wrote: > ld.lld prior to 21.0.0 does not support using the KEEP keyword within an > overlay description, which may be needed to avoid discarding necessary > sections within an overlay with '--gc-sections', which can be enabled > for the kernel via CONFIG_LD_DEAD_CODE_DATA_ELIMINATION. > > Disallow CONFIG_LD_DEAD_CODE_DATA_ELIMINATION without support for KEEP > within OVERLAY and introduce a macro, OVERLAY_KEEP, that can be used to > conditionally add KEEP when it is properly supported to avoid breaking > old versions of ld.lld. > > Cc: stable@xxxxxxxxxxxxxxx > Link: https://github.com/llvm/llvm-project/commit/381599f1fe973afad3094e55ec99b1620dba7d8c > Signed-off-by: Nathan Chancellor <nathan@xxxxxxxxxx> Very clear and easy to follow. Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx> Yours, Linus Walleij
