From mboxrd@z Thu Jan 1 00:00:00 1970 From: dann.frazier@canonical.com (dann frazier) Date: Fri, 22 Jan 2016 16:07:02 -0700 Subject: [PATCH] arm64: errata: Add -mpc-relative-literal-loads to erratum #843419 build flags Message-ID: <1453504022-7890-1-git-send-email-dann.frazier@canonical.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org GCC6 (and Linaro's 2015.12 snapshot of GCC5) has a new default that uses adrp/ldr or adrp/add to address literal pools. When CONFIG_ARM64_ERRATUM_843419 is enabled, modules built with this toolchain fail to load: [ 2.156817] module libahci: unsupported RELA relocation: 275 Longterm, this will likely be superseded by -mfix-cortex-a53-843419, which should disable this optimization in the future. Cc: stable at vger.kernel.org Fixes: df057cc7b4fa ("arm64: errata: add module build workaround for erratum #843419") BugLink: http://bugs.launchpad.net/bugs/1533009 Suggested-by: Christophe Lyon Signed-off-by: dann frazier --- arch/arm64/Makefile | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile index cd822d8..08e794d 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -43,6 +43,7 @@ CHECKFLAGS += -D__aarch64__ ifeq ($(CONFIG_ARM64_ERRATUM_843419), y) KBUILD_CFLAGS_MODULE += -mcmodel=large +KBUILD_CFLAGS_MODULE += $(call cc-option, -mpc-relative-literal-loads) endif # Default value -- 2.7.0