diff options
| author | dann frazier <dann.frazier@canonical.com> | 2016-01-25 16:52:16 -0700 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2016-04-18 08:49:41 -0400 |
| commit | 8afa97ba940aec46ad0ac07ad36b77c600c1fe0b (patch) | |
| tree | 1695464d9ec49f4f1be644c9a59967c177a6310f | |
| parent | d0706774e7b2c1509c339bfb37e061eb45ef65f8 (diff) | |
arm64: errata: Add -mpc-relative-literal-loads to build flags
[ Upstream commit 67dfa1751ce71e629aad7c438e1678ad41054677 ]
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 <ard.biesheuvel@linaro.org>
Suggested-by: Christophe Lyon <christophe.lyon@linaro.org>
Signed-off-by: Dann Frazier <dann.frazier@canonical.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
| -rw-r--r-- | arch/arm64/Makefile | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile index 2d54c55400ed..37c4fd6aeb7a 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -20,6 +20,8 @@ LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name) KBUILD_DEFCONFIG := defconfig KBUILD_CFLAGS += -mgeneral-regs-only +KBUILD_CFLAGS += $(call cc-option, -mpc-relative-literal-loads) + ifeq ($(CONFIG_CPU_BIG_ENDIAN), y) KBUILD_CPPFLAGS += -mbig-endian AS += -EB |