1 files changed, 39 insertions, 0 deletions

diff --git a/arch/x86/include/asm/disabled-features.h b/arch/x86/include/asm/disabled-features.h
new file mode 100644
index 000000000000..97534a7d38e3
--- /dev/null
+++ b/arch/x86/include/asm/disabled-features.h
@@ -0,0 +1,39 @@
+#ifndef _ASM_X86_DISABLED_FEATURES_H
+#define _ASM_X86_DISABLED_FEATURES_H
+
+/* These features, although they might be available in a CPU
+ * will not be used because the compile options to support
+ * them are not present.
+ *
+ * This code allows them to be checked and disabled at
+ * compile time without an explicit #ifdef.  Use
+ * cpu_feature_enabled().
+ */
+
+#ifdef CONFIG_X86_64
+# define DISABLE_VME            (1<<(X86_FEATURE_VME & 31))
+# define DISABLE_K6_MTRR        (1<<(X86_FEATURE_K6_MTRR & 31))
+# define DISABLE_CYRIX_ARR      (1<<(X86_FEATURE_CYRIX_ARR & 31))
+# define DISABLE_CENTAUR_MCR    (1<<(X86_FEATURE_CENTAUR_MCR & 31))
+#else
+# define DISABLE_VME            0
+# define DISABLE_K6_MTRR        0
+# define DISABLE_CYRIX_ARR      0
+# define DISABLE_CENTAUR_MCR    0
+#endif /* CONFIG_X86_64 */
+
+/*
+ * Make sure to add features to the correct mask
+ */
+#define DISABLED_MASK0  (DISABLE_VME)
+#define DISABLED_MASK1  0
+#define DISABLED_MASK2  0
+#define DISABLED_MASK3  (DISABLE_CYRIX_ARR|DISABLE_CENTAUR_MCR|DISABLE_K6_MTRR)
+#define DISABLED_MASK4  0
+#define DISABLED_MASK5  0
+#define DISABLED_MASK6  0
+#define DISABLED_MASK7  0
+#define DISABLED_MASK8  0
+#define DISABLED_MASK9  0
+
+#endif /* _ASM_X86_DISABLED_FEATURES_H */