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kbuild: lto: merge module sections
authorSami Tolvanen <samitolvanen@google.com>
Fri, 11 Dec 2020 18:46:22 +0000 (10:46 -0800)
committerKees Cook <keescook@chromium.org>
Thu, 14 Jan 2021 16:21:08 +0000 (08:21 -0800)
commit9e2110dc8a190bbe9bd4a6ea87d7e9771c3e2d44
tree479759a1b7e3330906346ec9f4b25b2a79d47c5dtree | snapshot
parentfa22e0aba80c4071b7cbbb506f55b62135944ca3commit | diff
kbuild: lto: merge module sections

LLD always splits sections with LTO, which increases module sizes. This
change adds linker script rules to merge the split sections in the final
module.

Suggested-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20201211184633.3213045-6-samitolvanen@google.com
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