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 bool pat_enabled(void); 8 void pat_disable(const char *reason); 9 extern void pat_init(void); 10 extern void init_cache_modes(void); 11 12 extern int reserve_memtype(u64 start, u64 end, 13 enum page_cache_mode req_pcm, enum page_cache_mode *ret_pcm); 14 extern int free_memtype(u64 start, u64 end); 15 16 extern int kernel_map_sync_memtype(u64 base, unsigned long size, 17 enum page_cache_mode pcm); 18 19 int io_reserve_memtype(resource_size_t start, resource_size_t end, 20 enum page_cache_mode *pcm); 21 22 void io_free_memtype(resource_size_t start, resource_size_t end); 23 24 #endif /* _ASM_X86_PAT_H */ 25