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7fa3e10f0f
This helper is only used by x86 low-level MM code. Also remove the entirely pointless __pte2cachemode_tbl export as that symbol can be marked static now. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Borislav Petkov <bp@suse.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20200408152745.1565832-3-hch@lst.de
30 lines
899 B
C
30 lines
899 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_MEMTYPE_H
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#define _ASM_X86_MEMTYPE_H
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#include <linux/types.h>
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#include <asm/pgtable_types.h>
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extern bool pat_enabled(void);
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extern 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 memtype_reserve(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 memtype_free(u64 start, u64 end);
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extern int memtype_kernel_map_sync(u64 base, unsigned long size,
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enum page_cache_mode pcm);
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extern int memtype_reserve_io(resource_size_t start, resource_size_t end,
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enum page_cache_mode *pcm);
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extern void memtype_free_io(resource_size_t start, resource_size_t end);
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extern bool pat_pfn_immune_to_uc_mtrr(unsigned long pfn);
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bool x86_has_pat_wp(void);
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enum page_cache_mode pgprot2cachemode(pgprot_t pgprot);
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#endif /* _ASM_X86_MEMTYPE_H */
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