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| author | dann frazier <dann.frazier@canonical.com> | 2016-01-25 16:52:16 -0700 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2016-01-26 11:17:23 +0000 |
| commit | 67dfa1751ce71e629aad7c438e1678ad41054677 (patch) | |
| tree | e2b5dc99b5193a83210e8897624dd9bda5ec7e76 | |
| parent | 728dabd6d1751cf5e0f8e0535891393da62396e9 (diff) | |
| download | rt-history-67dfa1751ce71e629aad7c438e1678ad41054677.tar.gz | |
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 <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>
| -rw-r--r-- | arch/arm64/Makefile | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile index 094a137f6083e8..307237cfe728b1 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) |