Add patch to fix ARM kernel neon build
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Josh Boyer
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@ -14,7 +14,7 @@ CONFIG_AEABI=y
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CONFIG_VFP=y
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CONFIG_VFPv3=y
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CONFIG_NEON=y
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# CONFIG_KERNEL_MODE_NEON is not set
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CONFIG_KERNEL_MODE_NEON=y
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CONFIG_ARM_UNWIND=y
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CONFIG_ARM_THUMB=y
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Sat, 07 Sep 2013 07:21:16 -0700 (PDT)
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From: Ard Biesheuvel <ard.biesheuvel@linaro.org>
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To: linux-arm-kernel@lists.infradead.org
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Cc: linux@arm.linux.org.uk, nico@linaro.org, jwboyer@fedoraproject.org,
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Ard Biesheuvel <ard.biesheuvel@linaro.org>
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Subject: [PATCH] ARM: fix modular build of xor_blocks() with NEON enabled
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Date: Sat, 7 Sep 2013 16:21:13 +0200
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Message-Id: <1378563673-10637-1-git-send-email-ard.biesheuvel@linaro.org>
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X-Scanned-By: MIMEDefang 2.68 on 10.5.110.21
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Commit 0195659 introduced a NEON accelerated version of the xor_blocks()
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function, but it needs the changes in this patch to allow it to be built
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as a module rather than statically into the kernel.
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This patch creates a separate module xor-neon.ko which exports the NEON
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inner xor_blocks() functions depended upon by the regular xor.ko if it
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is built with CONFIG_KERNEL_MODE_NEON=y
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Reported-by: Josh Boyer <jwboyer@fedoraproject.org>
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Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
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---
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arch/arm/lib/Makefile | 4 +++-
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arch/arm/lib/xor-neon.c | 4 ++++
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2 files changed, 7 insertions(+), 1 deletion(-)
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diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile
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index aaf3a87..6bc2bd3 100644
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--- a/arch/arm/lib/Makefile
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+++ b/arch/arm/lib/Makefile
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@@ -49,5 +49,7 @@ $(obj)/csumpartialcopyuser.o: $(obj)/csumpartialcopygeneric.S
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ifeq ($(CONFIG_KERNEL_MODE_NEON),y)
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NEON_FLAGS := -mfloat-abi=softfp -mfpu=neon
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CFLAGS_xor-neon.o += $(NEON_FLAGS)
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- lib-$(CONFIG_XOR_BLOCKS) += xor-neon.o
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+ xor-neon-$(CONFIG_XOR_BLOCKS) := xor-neon.o
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+ lib-y += $(xor-neon-y)
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+ obj-m += $(xor-neon-m)
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endif
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diff --git a/arch/arm/lib/xor-neon.c b/arch/arm/lib/xor-neon.c
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index f485e5a..2c40aea 100644
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--- a/arch/arm/lib/xor-neon.c
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+++ b/arch/arm/lib/xor-neon.c
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@@ -9,6 +9,9 @@
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*/
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#include <linux/raid/xor.h>
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+#include <linux/module.h>
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+
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+MODULE_LICENSE("GPL");
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#ifndef __ARM_NEON__
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#error You should compile this file with '-mfloat-abi=softfp -mfpu=neon'
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@@ -40,3 +43,4 @@ struct xor_block_template const xor_block_neon_inner = {
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.do_4 = xor_8regs_4,
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.do_5 = xor_8regs_5,
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};
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+EXPORT_SYMBOL(xor_block_neon_inner);
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--
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1.8.1.2
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@ -62,7 +62,7 @@ Summary: The Linux kernel
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# For non-released -rc kernels, this will be appended after the rcX and
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# gitX tags, so a 3 here would become part of release "0.rcX.gitX.3"
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#
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%global baserelease 1
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%global baserelease 2
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%global fedora_build %{baserelease}
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# base_sublevel is the kernel version we're starting with and patching
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@ -770,6 +770,7 @@ Patch25047: drm-radeon-Disable-writeback-by-default-on-ppc.patch
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Patch25099: HID-CVE-fixes.patch
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Patch25100: perf-arm-fix.patch
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Patch25101: fix-arm-neon-xor.patch
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# END OF PATCH DEFINITIONS
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@ -1499,6 +1500,7 @@ ApplyPatch drm-radeon-Disable-writeback-by-default-on-ppc.patch
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ApplyPatch HID-CVE-fixes.patch
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ApplyPatch perf-arm-fix.patch
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ApplyPatch fix-arm-neon-xor.patch
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# END OF PATCH APPLICATIONS
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@ -2301,6 +2303,9 @@ fi
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# ||----w |
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# || ||
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%changelog
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* Sat Sep 07 2013 Josh Boyer <jwboyer@fedoraproject.org>
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- Add patch to fix ARM kernel neon build
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* Fri Sep 06 2013 Josh Boyer <jwboyer@fedoraproject.org> - 3.12.0-0.rc0.git14.1
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- Linux v3.11-6855-g4de9ad9
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