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-rw-r--r--arch/x86/include/asm/pat.h22
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 0000000..482c3e3
--- /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 */
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