From: Sami Tolvanen <samitolvanen@google.com>
Date: Fri, 11 Dec 2020 18:46:33 +0000 (-0800)
Subject: arm64: allow LTO to be selected
X-Git-Tag: v5.12-rc1~70^2~1
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=112b6a8e038d793d016e330f53acb9383ac504b3;p=thirdparty%2Fkernel%2Flinux.git

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 d644d975eddbf..2d3f6d9678224 100644
--- 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