Cregit: Linux 5.7: memtype.h

Contributors: 10
Author	Tokens	Token Proportion	Commits	Commit Proportion
Venkatesh Pallipadi	71	54.62%	3	18.75%
Ingo Molnar	13	10.00%	3	18.75%
Juergen Gross	12	9.23%	3	18.75%
Toshi Kani	9	6.92%	1	6.25%
Haozhong Zhang	8	6.15%	1	6.25%
Mikulas Patocka	7	5.38%	1	6.25%
Luis R. Rodriguez	5	3.85%	1	6.25%
Jeremy Fitzhardinge	3	2.31%	1	6.25%
Greg Kroah-Hartman	1	0.77%	1	6.25%
Andreas Herrmann	1	0.77%	1	6.25%
Total	130		16

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_MEMTYPE_H
#define _ASM_X86_MEMTYPE_H

#include <linux/types.h>
#include <asm/pgtable_types.h>

extern bool pat_enabled(void);
extern void pat_disable(const char *reason);
extern void pat_init(void);
extern void init_cache_modes(void);

extern int memtype_reserve(u64 start, u64 end,
		enum page_cache_mode req_pcm, enum page_cache_mode *ret_pcm);
extern int memtype_free(u64 start, u64 end);

extern int memtype_kernel_map_sync(u64 base, unsigned long size,
		enum page_cache_mode pcm);

extern int memtype_reserve_io(resource_size_t start, resource_size_t end,
			enum page_cache_mode *pcm);

extern void memtype_free_io(resource_size_t start, resource_size_t end);

extern bool pat_pfn_immune_to_uc_mtrr(unsigned long pfn);

#endif /* _ASM_X86_MEMTYPE_H */