arch/x86/include/asm/pat.h

   1 #ifndef _ASM_X86_PAT_H
   2 #define _ASM_X86_PAT_H
   3
   4 #include <linux/types.h>
   5
   6 #ifdef CONFIG_X86_PAT
   7 extern int pat_enabled;
   8 extern void validate_pat_support(struct cpuinfo_x86 *c);
   9 #else
  10 static const int pat_enabled;
  11 static inline void validate_pat_support(struct cpuinfo_x86 *c) { }
  12 #endif
  13
  14 extern void pat_init(void);
  15
  16 extern int reserve_memtype(u64 start, u64 end,
  17                 unsigned long req_type, unsigned long *ret_type);
  18 extern int free_memtype(u64 start, u64 end);
  19
  20 extern void pat_disable(char *reason);
  21
  22 extern int kernel_map_sync_memtype(u64 base, unsigned long size,
  23                 unsigned long flag);
  24
  25 #endif /* _ASM_X86_PAT_H */