1 files changed, 22 insertions, 0 deletions

diff --git a/arch/x86/include/asm/pat.h b/arch/x86/include/asm/pat.h
new file mode 100644
index 000000000000..b8493b3b9890
--- /dev/null
+++ b/arch/x86/include/asm/pat.h
@@ -0,0 +1,22 @@
+#ifndef _ASM_X86_PAT_H
+#define _ASM_X86_PAT_H
+
+#include <linux/types.h>
+
+#ifdef CONFIG_X86_PAT
+extern int pat_enabled;
+extern void validate_pat_support(struct cpuinfo_x86 *c);
+#else
+static const int pat_enabled;
+static inline void validate_pat_support(struct cpuinfo_x86 *c) { }
+#endif
+
+extern void pat_init(void);
+
+extern int reserve_memtype(u64 start, u64 end,
+                unsigned long req_type, unsigned long *ret_type);
+extern int free_memtype(u64 start, u64 end);
+
+extern void pat_disable(char *reason);
+
+#endif /* _ASM_X86_PAT_H */