From: Sami Tolvanen <samitolvanen@google.com>
Date: Tue, 19 Dec 2017 16:55:23 +0000 (-0800)
Subject: ANDROID: arm64: vdso: disable LTO
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=84cf1990330703c1d560ec63cba820e508707519;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

ANDROID: arm64: vdso: disable LTO

Due to a bug in clang, vdso fails to build when both LTO_CLANG and
CC_OPTIMIZE_FOR_SIZE are enabled:

  https://bugs.llvm.org/show_bug.cgi?id=32155

Disable LTO for vdso to work around the problem.

Bug: 62093296
Bug: 67506682
Change-Id: I1d0279535fd389db4c829e4556f9ef728f240a34
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
---

diff --git a/arch/arm64/kernel/vdso/Makefile b/arch/arm64/kernel/vdso/Makefile
index b215c712d897..ef3f9d9d4062 100644
--- a/arch/arm64/kernel/vdso/Makefile
+++ b/arch/arm64/kernel/vdso/Makefile
@@ -15,6 +15,7 @@ obj-vdso := $(addprefix $(obj)/, $(obj-vdso))
 ccflags-y := -shared -fno-common -fno-builtin
 ccflags-y += -nostdlib -Wl,-soname=linux-vdso.so.1 \
 		$(call cc-ldoption, -Wl$(comma)--hash-style=sysv)
+ccflags-y += $(DISABLE_LTO)
 
 # Disable gcov profiling for VDSO code
 GCOV_PROFILE := n