108 lines
2.7 KiB
C
108 lines
2.7 KiB
C
#ifndef _ASM_X86_PGTABLE_64_DEFS_H
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#define _ASM_X86_PGTABLE_64_DEFS_H
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#include <asm/sparsemem.h>
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#ifndef __ASSEMBLY__
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#include <linux/types.h>
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#include <asm/kaslr.h>
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/*
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* These are used to make use of C type-checking..
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*/
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typedef unsigned long pteval_t;
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typedef unsigned long pmdval_t;
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typedef unsigned long pudval_t;
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typedef unsigned long p4dval_t;
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typedef unsigned long pgdval_t;
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typedef unsigned long pgprotval_t;
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typedef struct { pteval_t pte; } pte_t;
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#endif /* !__ASSEMBLY__ */
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#define SHARED_KERNEL_PMD 0
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#ifdef CONFIG_X86_5LEVEL
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/*
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* PGDIR_SHIFT determines what a top-level page table entry can map
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*/
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#define PGDIR_SHIFT 48
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#define PTRS_PER_PGD 512
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/*
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* 4th level page in 5-level paging case
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*/
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#define P4D_SHIFT 39
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#define PTRS_PER_P4D 512
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#define P4D_SIZE (_AC(1, UL) << P4D_SHIFT)
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#define P4D_MASK (~(P4D_SIZE - 1))
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#else /* CONFIG_X86_5LEVEL */
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/*
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* PGDIR_SHIFT determines what a top-level page table entry can map
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*/
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#define PGDIR_SHIFT 39
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#define PTRS_PER_PGD 512
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#endif /* CONFIG_X86_5LEVEL */
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/*
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* 3rd level page
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*/
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#define PUD_SHIFT 30
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#define PTRS_PER_PUD 512
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/*
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* PMD_SHIFT determines the size of the area a middle-level
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* page table can map
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*/
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#define PMD_SHIFT 21
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#define PTRS_PER_PMD 512
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/*
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* entries per page directory level
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*/
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#define PTRS_PER_PTE 512
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#define PMD_SIZE (_AC(1, UL) << PMD_SHIFT)
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#define PMD_MASK (~(PMD_SIZE - 1))
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#define PUD_SIZE (_AC(1, UL) << PUD_SHIFT)
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#define PUD_MASK (~(PUD_SIZE - 1))
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#define PGDIR_SIZE (_AC(1, UL) << PGDIR_SHIFT)
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#define PGDIR_MASK (~(PGDIR_SIZE - 1))
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/* See Documentation/x86/x86_64/mm.txt for a description of the memory map. */
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#define MAXMEM _AC(__AC(1, UL) << MAX_PHYSMEM_BITS, UL)
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#ifdef CONFIG_X86_5LEVEL
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#define VMALLOC_SIZE_TB _AC(16384, UL)
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#define __VMALLOC_BASE _AC(0xff92000000000000, UL)
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#define __VMEMMAP_BASE _AC(0xffd4000000000000, UL)
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#else
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#define VMALLOC_SIZE_TB _AC(32, UL)
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#define __VMALLOC_BASE _AC(0xffffc90000000000, UL)
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#define __VMEMMAP_BASE _AC(0xffffea0000000000, UL)
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#endif
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#ifdef CONFIG_RANDOMIZE_MEMORY
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#define VMALLOC_START vmalloc_base
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#define VMEMMAP_START vmemmap_base
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#else
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#define VMALLOC_START __VMALLOC_BASE
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#define VMEMMAP_START __VMEMMAP_BASE
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#endif /* CONFIG_RANDOMIZE_MEMORY */
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#define VMALLOC_END (VMALLOC_START + _AC((VMALLOC_SIZE_TB << 40) - 1, UL))
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#define MODULES_VADDR (__START_KERNEL_map + KERNEL_IMAGE_SIZE)
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/* The module sections ends with the start of the fixmap */
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#define MODULES_END __fix_to_virt(__end_of_fixed_addresses + 1)
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#define MODULES_LEN (MODULES_END - MODULES_VADDR)
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#define ESPFIX_PGD_ENTRY _AC(-2, UL)
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#define ESPFIX_BASE_ADDR (ESPFIX_PGD_ENTRY << P4D_SHIFT)
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#define EFI_VA_START ( -4 * (_AC(1, UL) << 30))
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#define EFI_VA_END (-68 * (_AC(1, UL) << 30))
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#define EARLY_DYNAMIC_PAGE_TABLES 64
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#endif /* _ASM_X86_PGTABLE_64_DEFS_H */
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