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authorSami Tolvanen <samitolvanen@google.com>2021-03-08 10:46:56 -0800
committerMasahiro Yamada <masahiroy@kernel.org>2021-03-11 14:40:50 +0900
commitbf3c255150619b71badb328c4dab48401a7ed62d (patch)
tree736278ab31b187f28405558704c86f3c462c958e /arch
parent2eab791f940b98d0bdd4d1e8c4857f3dec3c7d04 (diff)
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>
Diffstat (limited to 'arch')
-rw-r--r--arch/Kconfig2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/Kconfig b/arch/Kconfig
index 2bb30673d8e6..2e7139b39e8f 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -638,7 +638,7 @@ config HAS_LTO_CLANG
depends on $(success,$(AR) --help | head -n 1 | grep -qi llvm)
depends on ARCH_SUPPORTS_LTO_CLANG
depends on !FTRACE_MCOUNT_USE_RECORDMCOUNT
- depends on !KASAN
+ depends on !KASAN || KASAN_HW_TAGS
depends on !GCOV_KERNEL
help
The compiler and Kconfig options support building with Clang's