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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/powerpc/include/asm/book3s/64/slice.h
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/* SPDX-License-Identifier: GPL-2.0 */

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#ifndef _ASM_POWERPC_BOOK3S_64_SLICE_H

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#define _ASM_POWERPC_BOOK3S_64_SLICE_H

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#ifndef __ASSEMBLY__

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#ifdef CONFIG_PPC_64S_HASH_MMU

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#ifdef CONFIG_HUGETLB_PAGE

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#define HAVE_ARCH_HUGETLB_UNMAPPED_AREA

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#endif

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#define HAVE_ARCH_UNMAPPED_AREA

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#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN

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#endif

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#define SLICE_LOW_SHIFT		28

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#define SLICE_LOW_TOP		(0x100000000ul)

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#define SLICE_NUM_LOW		(SLICE_LOW_TOP >> SLICE_LOW_SHIFT)

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#define GET_LOW_SLICE_INDEX(addr)	((addr) >> SLICE_LOW_SHIFT)

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#define SLICE_HIGH_SHIFT	40

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#define SLICE_NUM_HIGH		(H_PGTABLE_RANGE >> SLICE_HIGH_SHIFT)

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#define GET_HIGH_SLICE_INDEX(addr)	((addr) >> SLICE_HIGH_SHIFT)

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#define SLB_ADDR_LIMIT_DEFAULT	DEFAULT_MAP_WINDOW_USER64

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struct mm_struct;

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unsigned long slice_get_unmapped_area(unsigned long addr, unsigned long len,

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				      unsigned long flags, unsigned int psize,

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				      int topdown);

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unsigned int get_slice_psize(struct mm_struct *mm, unsigned long addr);

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void slice_set_range_psize(struct mm_struct *mm, unsigned long start,

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			   unsigned long len, unsigned int psize);

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void slice_init_new_context_exec(struct mm_struct *mm);

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void slice_setup_new_exec(void);

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#endif /* __ASSEMBLY__ */

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#endif /* _ASM_POWERPC_BOOK3S_64_SLICE_H */

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