1 #ifndef _ASM_X86_PAT_H 2 #define _ASM_X86_PAT_H 3 4 #include <linux/types.h> 5 #include <asm/pgtable_types.h> 6 7 #ifdef CONFIG_X86_PAT 8 extern int pat_enabled; 9 #else 10 static const int pat_enabled; 11 #endif 12 13 extern void pat_init(void); 14 15 extern int reserve_memtype(u64 start, u64 end, 16 unsigned long req_type, unsigned long *ret_type); 17 extern int free_memtype(u64 start, u64 end); 18 19 extern int kernel_map_sync_memtype(u64 base, unsigned long size, 20 unsigned long flag); 21 22 int io_reserve_memtype(resource_size_t start, resource_size_t end, 23 unsigned long *type); 24 25 void io_free_memtype(resource_size_t start, resource_size_t end); 26 27 #endif /* _ASM_X86_PAT_H */ 28