x86: separate cmpxchg8b checking from PAE checking
.. allowing the former to be use in non-PAE kernels, too.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/include/asm-x86/required-features.h b/include/asm-x86/required-features.h
index 7400d3a..8c38719 100644
--- a/include/asm-x86/required-features.h
+++ b/include/asm-x86/required-features.h
@@ -19,9 +19,13 @@
#if defined(CONFIG_X86_PAE) || defined(CONFIG_X86_64)
# define NEED_PAE (1<<(X86_FEATURE_PAE & 31))
-# define NEED_CX8 (1<<(X86_FEATURE_CX8 & 31))
#else
# define NEED_PAE 0
+#endif
+
+#ifdef CONFIG_X86_CMPXCHG64
+# define NEED_CX8 (1<<(X86_FEATURE_CX8 & 31))
+#else
# define NEED_CX8 0
#endif