Commit 67dfa175 authored by dann frazier's avatar dann frazier Committed by Will Deacon

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: df057cc7 ("arm64: errata: add module build workaround for erratum #843419")
BugLink: http://bugs.launchpad.net/bugs/1533009Acked-by: default avatarArd Biesheuvel <ard.biesheuvel@linaro.org>
Suggested-by: default avatarChristophe Lyon <christophe.lyon@linaro.org>
Signed-off-by: default avatarDann Frazier <dann.frazier@canonical.com>
Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
parent 728dabd6
......@@ -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)
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment