arm64: allow LTO to be selected

Allow CONFIG_LTO_CLANG to be enabled.

Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20201211184633.3213045-17-samitolvanen@google.com

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index d644d97..2d3f6d9 100644 (file)
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -73,6 +73,8 @@ config ARM64
        select ARCH_SUPPORTS_DEBUG_PAGEALLOC
        select ARCH_SUPPORTS_MEMORY_FAILURE
        select ARCH_SUPPORTS_SHADOW_CALL_STACK if CC_HAVE_SHADOW_CALL_STACK
+       select ARCH_SUPPORTS_LTO_CLANG if CPU_LITTLE_ENDIAN
+       select ARCH_SUPPORTS_LTO_CLANG_THIN
        select ARCH_SUPPORTS_ATOMIC_RMW
        select ARCH_SUPPORTS_INT128 if CC_HAS_INT128 && (GCC_VERSION >= 50000 || CC_IS_CLANG)
        select ARCH_SUPPORTS_NUMA_BALANCING