Lines Matching +full:page +full:- +full:level
1 /* SPDX-License-Identifier: GPL-2.0-only */
16 * 2 level paging setup for software walked MMUv3 (ARC700) and MMUv4 (HS)
19 * -------------------------------------------------------
20 * | | <---------- PGDIR_SHIFT ----------> |
21 * | | | <-- PAGE_SHIFT --> |
22 * -------------------------------------------------------
24 * | | --> off in page frame
25 * | ---> index into Page Table
26 * ----> index into Page Directory
29 * However enabling of super page in a 2 level regime pegs PGDIR_SHIFT to
30 * super page size.
39 * No Super page case
42 * (so 4K page can only have 1K entries: or 10 bits)
55 * A default 3 level paging testing setup in software walked MMU
56 * MMUv4 (8K page): <4> : <7> : <8> : <13>
57 * A default 4 level paging testing setup in software walked MMU
58 * MMUv4 (8K page): <4> : <3> : <4> : <8> : <13>
71 #define PGDIR_MASK (~(PGDIR_SIZE - 1))
72 #define PTRS_PER_PGD BIT(32 - PGDIR_SHIFT)
76 #define PUD_MASK (~(PUD_SIZE - 1))
77 #define PTRS_PER_PUD BIT(PGDIR_SHIFT - PUD_SHIFT)
82 #define PMD_MASK (~(PMD_SIZE - 1))
83 #define PTRS_PER_PMD BIT(PUD_SHIFT - PMD_SHIFT)
86 #define PTRS_PER_PTE BIT(PMD_SHIFT - PAGE_SHIFT)
91 #include <asm-generic/pgtable-nop4d.h>
93 #include <asm-generic/pgtable-nopud.h>
95 #include <asm-generic/pgtable-nopmd.h>
99 * 1st level paging: pgd
106 /* In 4 level paging, p4d_* macros work on pgd */
116 * 2nd level paging: pud
126 * In 3 level paging, pud_* macros work on pgd
127 * In 4 level paging, pud_* macros work on pud
138 * 3rd level paging: pmd
145 #define mk_pmd(page,prot) pfn_pmd(page_to_pfn(page),prot) argument
150 * Due to the strange way generic pgtable level folding works, the pmd_* macros
151 * - are valid even for 2 levels (which supposedly only has pgd - pte)
152 * - behave differently for 2 vs. 3
153 * In 2 level paging (pgd -> pte), pmd_* macros work on pgd
154 * In 3+ level paging (pgd -> pmd -> pte), pmd_* macros work on pmd
167 * 4th level paging: pte
180 #define mk_pte(page, prot) pfn_pte(page_to_pfn(page), prot) argument