kbuild: Allow LTO to be selected with KASAN_HW_TAGS
authorSami Tolvanen <samitolvanen@google.com>
Mon, 8 Mar 2021 18:46:56 +0000 (10:46 -0800)
committerMasahiro Yamada <masahiroy@kernel.org>
Thu, 11 Mar 2021 05:40:50 +0000 (14:40 +0900)
commitbf3c255150619b71badb328c4dab48401a7ed62d
tree736278ab31b187f28405558704c86f3c462c958e
parent2eab791f940b98d0bdd4d1e8c4857f3dec3c7d04
kbuild: Allow LTO to be selected with KASAN_HW_TAGS

While LTO with KASAN is normally not useful, hardware tag-based KASAN
can be used also in production kernels with ARM64_MTE. Therefore, allow
KASAN_HW_TAGS to be selected together with HAS_LTO_CLANG.

Reported-by: Alistair Delva <adelva@google.com>
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
arch/Kconfig