linux-kernel - [PATCH 3.14 15/25] arm64: errata: use KBUILD_CFLAGS

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Message-Id: <20151023174553.261406166@linuxfoundation.org>
Date:	Fri, 23 Oct 2015 10:45:56 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Ard Biesheuvel <ard.biesheuvel@...aro.org>,
	Dann Frazier <dann.frazier@...onical.com>,
	Will Deacon <will.deacon@....com>
Subject: [PATCH 3.14 15/25] arm64: errata: use KBUILD_CFLAGS_MODULE for erratum #843419

3.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Will Deacon <will.deacon@....com>

commit b6dd8e0719c0d2d01429639a11b7bc2677de240c upstream.

Commit df057cc7b4fa ("arm64: errata: add module build workaround for
erratum #843419") sets CFLAGS_MODULE to ensure that the large memory
model is used by the compiler when building kernel modules.

However, CFLAGS_MODULE is an environment variable and intended to be
overridden on the command line, which appears to be the case with the
Ubuntu kernel packaging system, so use KBUILD_CFLAGS_MODULE instead.

Cc: Ard Biesheuvel <ard.biesheuvel@...aro.org>
Fixes: df057cc7b4fa ("arm64: errata: add module build workaround for erratum #843419")
Reported-by: Dann Frazier <dann.frazier@...onical.com>
Tested-by: Dann Frazier <dann.frazier@...onical.com>
Signed-off-by: Will Deacon <will.deacon@....com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/arm64/Makefile |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/arm64/Makefile
+++ b/arch/arm64/Makefile
@@ -35,7 +35,7 @@ comma = ,
 CHECKFLAGS	+= -D__aarch64__
 
 ifeq ($(CONFIG_ARM64_ERRATUM_843419), y)
-CFLAGS_MODULE	+= -mcmodel=large
+KBUILD_CFLAGS_MODULE	+= -mcmodel=large
 endif
 
 # Default value


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