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Date: Fri, 3 Nov 2017 10:11:56 -0700
From: Sami Tolvanen <samitolvanen@...gle.com>
To: linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc: Greg Hackmann <ghackmann@...gle.com>,
Kees Cook <keescook@...omium.org>,
Matthias Kaehlcke <mka@...omium.org>,
Nick Desaulniers <ndesaulniers@...gle.com>,
Sami Tolvanen <samitolvanen@...gle.com>
Subject: [PATCH 11/15] arm64: explicitly pass --no-fix-cortex-a53-843419 to GNU gold
Some versions of GNU gold are known to produce broken code with
--fix-cortex-a53-843419 as explained in this bug:
https://sourceware.org/bugzilla/show_bug.cgi?id=21491
If ARM64_ERRATUM_843419 is disabled and we're using GNU gold, pass
--no-fix-cortex-a53-843419 to the linker to ensure the erratum fix is not
used even if the linker is configured to enable it by default.
Signed-off-by: Sami Tolvanen <samitolvanen@...gle.com>
---
arch/arm64/Makefile | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
index c16bd1ab37f8..0c1fb297c98e 100644
--- a/arch/arm64/Makefile
+++ b/arch/arm64/Makefile
@@ -26,6 +26,11 @@ LDFLAGS_vmlinux += --fix-cortex-a53-843419
endif
endif
+ifeq ($(CONFIG_ARM64_ERRATUM_843419),)
+# https://sourceware.org/bugzilla/show_bug.cgi?id=21491
+LDFLAGS_GOLD += --no-fix-cortex-a53-843419
+endif
+
KBUILD_DEFCONFIG := defconfig
# Check for binutils support for specific extensions
--
2.15.0.403.gc27cc4dac6-goog
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