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Current File : //proc/3/root/usr/src/kernels/3.10.0-1160.45.1.el7.x86_64/arch/x86/include/asm/pat.h

#ifndef _ASM_X86_PAT_H
#define _ASM_X86_PAT_H

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

#ifdef CONFIG_X86_PAT
extern int pat_enabled;
#else
static const int pat_enabled;
#endif

extern void pat_init(void);
void pat_init_cache_modes(void);

extern int reserve_memtype(u64 start, u64 end,
		enum page_cache_mode req_pcm, enum page_cache_mode *ret_pcm);
extern int free_memtype(u64 start, u64 end);

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

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

void io_free_memtype(resource_size_t start, resource_size_t end);

bool pat_pfn_immune_to_uc_mtrr(unsigned long pfn);

#endif /* _ASM_X86_PAT_H */

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