Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1347486 > unrolled thread
| Started by | Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
|---|---|
| First post | 2016-03-02 02:30 +0100 |
| Last post | 2016-03-02 02:30 +0100 |
| Articles | 1 — 1 participant |
Back to article view | Back to linux.kernel
This discussion starts older than the indexed window; earlier articles aren't shown. The article labeled Started by
below is the oldest one visible, not the original post.
[PATCH 4.4 050/342] arm64: errata: Add -mpc-relative-literal-loads to build flags Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-03-02 02:30 +0100
| From | Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
|---|---|
| Date | 2016-03-02 02:30 +0100 |
| Subject | [PATCH 4.4 050/342] arm64: errata: Add -mpc-relative-literal-loads to build flags |
| Message-ID | <r83M1-nH-61@gated-at.bofh.it> |
4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: dann frazier <dann.frazier@canonical.com>
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>
---
arch/arm64/Makefile | 1 +
1 file changed, 1 insertion(+)
--- a/arch/arm64/Makefile
+++ b/arch/arm64/Makefile
@@ -27,6 +27,7 @@ $(warning LSE atomics not supported by b
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)
Back to top | Article view | linux.kernel
csiph-web