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 8extern int pat_enabled; 9#else 10static const int pat_enabled; 11#endif 12 13extern void pat_init(void); 14 15extern int reserve_memtype(u64 start, u64 end, 16 unsigned long req_type, unsigned long *ret_type); 17extern int free_memtype(u64 start, u64 end); 18 19extern int kernel_map_sync_memtype(u64 base, unsigned long size, 20 unsigned long flag); 21 22int io_reserve_memtype(resource_size_t start, resource_size_t end, 23 unsigned long *type); 24 25void io_free_memtype(resource_size_t start, resource_size_t end); 26 27#endif /* _ASM_X86_PAT_H */ 28