diff options
| author | dann frazier <dann.frazier@canonical.com> | 2016-01-25 16:52:16 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-03-03 15:07:08 -0800 |
| commit | db8bb76c6f9564e18d5dda4d89e4fc70dc83c3fd (patch) | |
| tree | 9ace28e2593ce255c9a88274fa4687b527e5d05b /arch/arm64 | |
| parent | bb10b5e76eac0a4ea6cd2350c8c9efdc620233ed (diff) | |
arm64: errata: Add -mpc-relative-literal-loads to build flags
commit 67dfa1751ce71e629aad7c438e1678ad41054677 upstream.
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>
[will: backport to 4.4-stable]
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/arm64')
| -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 cd822d8454c0..b6c90e5006e4 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -27,6 +27,7 @@ $(warning LSE atomics not supported by binutils) endif KBUILD_CFLAGS += -mgeneral-regs-only $(lseinstr) +KBUILD_CFLAGS += $(call cc-option, -mpc-relative-literal-loads) KBUILD_AFLAGS += $(lseinstr) ifeq ($(CONFIG_CPU_BIG_ENDIAN), y) |