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-rw-r--r--arch/um/Makefile-x86_645
1 files changed, 1 insertions, 4 deletions
diff --git a/arch/um/Makefile-x86_64 b/arch/um/Makefile-x86_64
index fe5316f0c6a..8ed362f9358 100644
--- a/arch/um/Makefile-x86_64
+++ b/arch/um/Makefile-x86_64
@@ -6,12 +6,9 @@ START := 0x60000000
_extra_flags_ = -fno-builtin -m64
-#We #undef __x86_64__ for kernelspace, not for userspace where
-#it's needed for headers to work!
-ARCH_KERNEL_DEFINES = -U__$(SUBARCH)__
KBUILD_CFLAGS += $(_extra_flags_)
-CHECKFLAGS += -m64
+CHECKFLAGS += -m64 -D__x86_64__
KBUILD_AFLAGS += -m64
LDFLAGS += -m elf_x86_64
KBUILD_CPPFLAGS += -m64