From 5e4e290d3751607726a62f0b49e11261a0a9345e Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Tue, 3 Jul 2018 17:02:49 -0700 Subject: ARM: disable KCOV for trusted foundations code The ARM trusted foundations code is currently broken in linux-next when CONFIG_KCOV_INSTRUMENT_ALL is set: /tmp/ccHdQsCI.s: Assembler messages: /tmp/ccHdQsCI.s:37: Error: .err encountered /tmp/ccHdQsCI.s:38: Error: .err encountered /tmp/ccHdQsCI.s:39: Error: .err encountered scripts/Makefile.build:311: recipe for target 'arch/arm/firmware/trusted_foundations.o' failed I could not find a function attribute that lets me disable -fsanitize-coverage=trace-pc for just one function, so this turns it off for the entire file instead. Link: http://lkml.kernel.org/r/20180529103636.1535457-1-arnd@arndb.de Fixes: 758517202bd2e4 ("arm: port KCOV to arm") Signed-off-by: Arnd Bergmann Acked-by: Olof Johansson Tested-by: Olof Johansson Cc: Dmitry Vyukov Cc: Mark Rutland Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/arm/firmware/Makefile | 3 +++ 1 file changed, 3 insertions(+) (limited to 'arch/arm') diff --git a/arch/arm/firmware/Makefile b/arch/arm/firmware/Makefile index a71f16536b6c..6e41336b0bc4 100644 --- a/arch/arm/firmware/Makefile +++ b/arch/arm/firmware/Makefile @@ -1 +1,4 @@ obj-$(CONFIG_TRUSTED_FOUNDATIONS) += trusted_foundations.o + +# tf_generic_smc() fails to build with -fsanitize-coverage=trace-pc +KCOV_INSTRUMENT := n -- cgit v1.2.3