[PATCH 12/10] powerpc: unbreak DYNAMIC_DEBUG=y build with clang

Rasmus Villemoes
2019-04-26T19:06:14Z

Current versions of clang does not like the %c modifier in inline
assembly for targets other than x86, so any DYNAMIC_DEBUG=y build
fails on ppc64. A fix is likely to land in 9.0 (see
https://github.com/ClangBuiltLinux/linux/issues/456), but unbreak the
build for older versions.

Fixes: powerpc: select DYNAMIC_DEBUG_RELATIVE_POINTERS for PPC64
Reported-by: Nathan Chancellor <natechancellor@gmail.com>
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
---
Andrew, please apply and/or fold into 10/10.

arch/powerpc/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 6821c8ae1d62..8511137ab963 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -155,7 +155,7 @@ config PPC
select BUILDTIME_EXTABLE_SORT
select CLONE_BACKWARDS
select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN
- select DYNAMIC_DEBUG_RELATIVE_POINTERS if PPC64
+ select DYNAMIC_DEBUG_RELATIVE_POINTERS if PPC64 && (CC_IS_GCC || CLANG_VERSION >= 90000)
select DYNAMIC_FTRACE if FUNCTION_TRACER
select EDAC_ATOMIC_SCRUB
select EDAC_SUPPORT
--
2.20.1