LXR linux/arch/x86/include/asm/pat.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _ASM_X86_PAT_H
   3#define _ASM_X86_PAT_H
   4
   5#include <linux/types.h>
   6#include <asm/pgtable_types.h>
   7
   8bool pat_enabled(void);
   9void pat_disable(const char *reason);
  10extern void pat_init(void);
  11extern void init_cache_modes(void);
  12
  13extern int reserve_memtype(u64 start, u64 end,
  14                enum page_cache_mode req_pcm, enum page_cache_mode *ret_pcm);
  15extern int free_memtype(u64 start, u64 end);
  16
  17extern int kernel_map_sync_memtype(u64 base, unsigned long size,
  18                enum page_cache_mode pcm);
  19
  20int io_reserve_memtype(resource_size_t start, resource_size_t end,
  21                        enum page_cache_mode *pcm);
  22
  23void io_free_memtype(resource_size_t start, resource_size_t end);
  24
  25#endif /* _ASM_X86_PAT_H */
  26