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-rw-r--r--arch/x86/kernel/i386_ksyms_32.c2
-rw-r--r--arch/x86/lib/Makefile6
2 files changed, 6 insertions, 2 deletions
diff --git a/arch/x86/kernel/i386_ksyms_32.c b/arch/x86/kernel/i386_ksyms_32.c
index 1736c5a725a..9c3bd4a2050 100644
--- a/arch/x86/kernel/i386_ksyms_32.c
+++ b/arch/x86/kernel/i386_ksyms_32.c
@@ -15,8 +15,10 @@ EXPORT_SYMBOL(mcount);
* the export, but dont use it from C code, it is used
* by assembly code and is not using C calling convention!
*/
+#ifndef CONFIG_X86_CMPXCHG64
extern void cmpxchg8b_emu(void);
EXPORT_SYMBOL(cmpxchg8b_emu);
+#endif
/* Networking helper routines. */
EXPORT_SYMBOL(csum_partial_copy_generic);
diff --git a/arch/x86/lib/Makefile b/arch/x86/lib/Makefile
index 3e549b8ec8c..85f5db95c60 100644
--- a/arch/x86/lib/Makefile
+++ b/arch/x86/lib/Makefile
@@ -15,8 +15,10 @@ ifeq ($(CONFIG_X86_32),y)
obj-y += atomic64_32.o
lib-y += checksum_32.o
lib-y += strstr_32.o
- lib-y += semaphore_32.o string_32.o cmpxchg8b_emu.o
-
+ lib-y += semaphore_32.o string_32.o
+ifneq ($(CONFIG_X86_CMPXCHG64),y)
+ lib-y += cmpxchg8b_emu.o
+endif
lib-$(CONFIG_X86_USE_3DNOW) += mmx_32.o
else
obj-y += io_64.o iomap_copy_64.o