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authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-11 10:41:07 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-13 08:17:18 +0300
commite09b41010ba33a20a87472ee821fa407a5b8da36 (patch)
treed10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/arch/arm64/Makefile
parentf93b97fd65072de626c074dbe099a1fff05ce060 (diff)
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page. During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/arch/arm64/Makefile')
-rw-r--r--kernel/arch/arm64/Makefile28
1 files changed, 25 insertions, 3 deletions
diff --git a/kernel/arch/arm64/Makefile b/kernel/arch/arm64/Makefile
index 81151663e..b6c90e500 100644
--- a/kernel/arch/arm64/Makefile
+++ b/kernel/arch/arm64/Makefile
@@ -17,7 +17,19 @@ GZFLAGS :=-9
KBUILD_DEFCONFIG := defconfig
-KBUILD_CFLAGS += -mgeneral-regs-only
+# Check for binutils support for specific extensions
+lseinstr := $(call as-instr,.arch_extension lse,-DCONFIG_AS_LSE=1)
+
+ifeq ($(CONFIG_ARM64_LSE_ATOMICS), y)
+ ifeq ($(lseinstr),)
+$(warning LSE atomics not supported by binutils)
+ endif
+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)
KBUILD_CPPFLAGS += -mbig-endian
AS += -EB
@@ -31,7 +43,7 @@ endif
CHECKFLAGS += -D__aarch64__
ifeq ($(CONFIG_ARM64_ERRATUM_843419), y)
-CFLAGS_MODULE += -mcmodel=large
+KBUILD_CFLAGS_MODULE += -mcmodel=large
endif
# Default value
@@ -44,6 +56,13 @@ else
TEXT_OFFSET := 0x00080000
endif
+# KASAN_SHADOW_OFFSET = VA_START + (1 << (VA_BITS - 3)) - (1 << 61)
+# in 32-bit arithmetic
+KASAN_SHADOW_OFFSET := $(shell printf "0x%08x00000000\n" $$(( \
+ (0xffffffff & (-1 << ($(CONFIG_ARM64_VA_BITS) - 32))) \
+ + (1 << ($(CONFIG_ARM64_VA_BITS) - 32 - 3)) \
+ - (1 << (64 - 32 - 3)) )) )
+
export TEXT_OFFSET GZFLAGS
core-y += arch/arm64/kernel/ arch/arm64/mm/
@@ -62,7 +81,10 @@ all: $(KBUILD_IMAGE) $(KBUILD_DTBS)
boot := arch/arm64/boot
-Image Image.gz: vmlinux
+Image: vmlinux
+ $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
+
+Image.%: vmlinux
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
zinstall install: vmlinux