From: dann frazier Date: Mon, 25 Jan 2016 23:52:16 +0000 (-0700) Subject: arm64: errata: Add -mpc-relative-literal-loads to build flags X-Git-Tag: v4.5-rc2~31^2~2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=67dfa1751ce71e629aad7c438e1678ad41054677;p=platform%2Fkernel%2Flinux-exynos.git arm64: errata: Add -mpc-relative-literal-loads to build flags 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: module libahci: unsupported RELA relocation: 275 This patch fixes the problem by passing '-mpc-relative-literal-loads' to the compiler. Cc: stable@vger.kernel.org Fixes: df057cc7b4fa ("arm64: errata: add module build workaround for erratum #843419") BugLink: http://bugs.launchpad.net/bugs/1533009 Acked-by: Ard Biesheuvel Suggested-by: Christophe Lyon Signed-off-by: Dann Frazier Signed-off-by: Will Deacon --- diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile index 094a137..307237c 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -28,6 +28,7 @@ endif KBUILD_CFLAGS += -mgeneral-regs-only $(lseinstr) KBUILD_CFLAGS += -fno-asynchronous-unwind-tables +KBUILD_CFLAGS += $(call cc-option, -mpc-relative-literal-loads) KBUILD_AFLAGS += $(lseinstr) ifeq ($(CONFIG_CPU_BIG_ENDIAN), y)