28 lines
768 B
C
28 lines
768 B
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_PAT_H
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#define _ASM_X86_PAT_H
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#include <linux/types.h>
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#include <asm/pgtable_types.h>
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bool pat_enabled(void);
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void pat_disable(const char *reason);
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extern void pat_init(void);
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extern void init_cache_modes(void);
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extern int reserve_memtype(u64 start, u64 end,
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enum page_cache_mode req_pcm, enum page_cache_mode *ret_pcm);
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extern int free_memtype(u64 start, u64 end);
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extern int kernel_map_sync_memtype(u64 base, unsigned long size,
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enum page_cache_mode pcm);
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int io_reserve_memtype(resource_size_t start, resource_size_t end,
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enum page_cache_mode *pcm);
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void io_free_memtype(resource_size_t start, resource_size_t end);
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bool pat_pfn_immune_to_uc_mtrr(unsigned long pfn);
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#endif /* _ASM_X86_PAT_H */
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