^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) .. SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) .. _arch_page_table_helpers:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) ===============================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) Architecture Page Table Helpers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) ===============================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) Generic MM expects architectures (with MMU) to provide helpers to create, access
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) and modify page table entries at various level for different memory functions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) These page table helpers need to conform to a common semantics across platforms.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) Following tables describe the expected semantics which can also be tested during
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) boot via CONFIG_DEBUG_VM_PGTABLE option. All future changes in here or the debug
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) test need to be in sync.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) ======================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) PTE Page Table Helpers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) ======================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) | pte_same | Tests whether both PTE entries are the same |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) | pte_bad | Tests a non-table mapped PTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) | pte_present | Tests a valid mapped PTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) | pte_young | Tests a young PTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) | pte_dirty | Tests a dirty PTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) | pte_write | Tests a writable PTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) | pte_special | Tests a special PTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) | pte_protnone | Tests a PROT_NONE PTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) | pte_devmap | Tests a ZONE_DEVICE mapped PTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) | pte_soft_dirty | Tests a soft dirty PTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) | pte_swp_soft_dirty | Tests a soft dirty swapped PTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) | pte_mkyoung | Creates a young PTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) | pte_mkold | Creates an old PTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) | pte_mkdirty | Creates a dirty PTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) | pte_mkclean | Creates a clean PTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) | pte_mkwrite | Creates a writable PTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) | pte_wrprotect | Creates a write protected PTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) | pte_mkspecial | Creates a special PTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) | pte_mkdevmap | Creates a ZONE_DEVICE mapped PTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) | pte_mksoft_dirty | Creates a soft dirty PTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) | pte_clear_soft_dirty | Clears a soft dirty PTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) | pte_swp_mksoft_dirty | Creates a soft dirty swapped PTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) | pte_swp_clear_soft_dirty | Clears a soft dirty swapped PTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) | pte_mknotpresent | Invalidates a mapped PTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) | ptep_get_and_clear | Clears a PTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) | ptep_get_and_clear_full | Clears a PTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) | ptep_test_and_clear_young | Clears young from a PTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) | ptep_set_wrprotect | Converts into a write protected PTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) | ptep_set_access_flags | Converts into a more permissive PTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) ======================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) PMD Page Table Helpers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) ======================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) | pmd_same | Tests whether both PMD entries are the same |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) | pmd_bad | Tests a non-table mapped PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) | pmd_leaf | Tests a leaf mapped PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) | pmd_huge | Tests a HugeTLB mapped PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) | pmd_trans_huge | Tests a Transparent Huge Page (THP) at PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) | pmd_present | Tests a valid mapped PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) | pmd_young | Tests a young PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) | pmd_dirty | Tests a dirty PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) | pmd_write | Tests a writable PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) | pmd_special | Tests a special PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) | pmd_protnone | Tests a PROT_NONE PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) | pmd_devmap | Tests a ZONE_DEVICE mapped PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) | pmd_soft_dirty | Tests a soft dirty PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) | pmd_swp_soft_dirty | Tests a soft dirty swapped PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) | pmd_mkyoung | Creates a young PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) | pmd_mkold | Creates an old PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) | pmd_mkdirty | Creates a dirty PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) | pmd_mkclean | Creates a clean PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) | pmd_mkwrite | Creates a writable PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) | pmd_wrprotect | Creates a write protected PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) | pmd_mkspecial | Creates a special PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) | pmd_mkdevmap | Creates a ZONE_DEVICE mapped PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) | pmd_mksoft_dirty | Creates a soft dirty PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) | pmd_clear_soft_dirty | Clears a soft dirty PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) | pmd_swp_mksoft_dirty | Creates a soft dirty swapped PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) | pmd_swp_clear_soft_dirty | Clears a soft dirty swapped PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) | pmd_mkinvalid | Invalidates a mapped PMD [1] |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) | pmd_set_huge | Creates a PMD huge mapping |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) | pmd_clear_huge | Clears a PMD huge mapping |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) | pmdp_get_and_clear | Clears a PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) | pmdp_get_and_clear_full | Clears a PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) | pmdp_test_and_clear_young | Clears young from a PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) | pmdp_set_wrprotect | Converts into a write protected PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) | pmdp_set_access_flags | Converts into a more permissive PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) ======================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) PUD Page Table Helpers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) ======================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) | pud_same | Tests whether both PUD entries are the same |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) | pud_bad | Tests a non-table mapped PUD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) | pud_leaf | Tests a leaf mapped PUD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) | pud_huge | Tests a HugeTLB mapped PUD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) | pud_trans_huge | Tests a Transparent Huge Page (THP) at PUD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) | pud_present | Tests a valid mapped PUD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) | pud_young | Tests a young PUD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) | pud_dirty | Tests a dirty PUD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) | pud_write | Tests a writable PUD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) | pud_devmap | Tests a ZONE_DEVICE mapped PUD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) | pud_mkyoung | Creates a young PUD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) | pud_mkold | Creates an old PUD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) | pud_mkdirty | Creates a dirty PUD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) | pud_mkclean | Creates a clean PUD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) | pud_mkwrite | Creates a writable PUD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) | pud_wrprotect | Creates a write protected PUD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) | pud_mkdevmap | Creates a ZONE_DEVICE mapped PUD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) | pud_mkinvalid | Invalidates a mapped PUD [1] |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) | pud_set_huge | Creates a PUD huge mapping |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) | pud_clear_huge | Clears a PUD huge mapping |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) | pudp_get_and_clear | Clears a PUD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) | pudp_get_and_clear_full | Clears a PUD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) | pudp_test_and_clear_young | Clears young from a PUD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) | pudp_set_wrprotect | Converts into a write protected PUD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) | pudp_set_access_flags | Converts into a more permissive PUD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) ==========================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) HugeTLB Page Table Helpers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) ==========================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) | pte_huge | Tests a HugeTLB |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) | pte_mkhuge | Creates a HugeTLB |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) | huge_pte_dirty | Tests a dirty HugeTLB |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) | huge_pte_write | Tests a writable HugeTLB |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) | huge_pte_mkdirty | Creates a dirty HugeTLB |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) | huge_pte_mkwrite | Creates a writable HugeTLB |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) | huge_pte_wrprotect | Creates a write protected HugeTLB |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) | huge_ptep_get_and_clear | Clears a HugeTLB |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) | huge_ptep_set_wrprotect | Converts into a write protected HugeTLB |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) | huge_ptep_set_access_flags | Converts into a more permissive HugeTLB |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) ========================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) SWAP Page Table Helpers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) ========================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) | __pte_to_swp_entry | Creates a swapped entry (arch) from a mapped PTE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) | __swp_to_pte_entry | Creates a mapped PTE from a swapped entry (arch) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) | __pmd_to_swp_entry | Creates a swapped entry (arch) from a mapped PMD |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) | __swp_to_pmd_entry | Creates a mapped PMD from a swapped entry (arch) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) | is_migration_entry | Tests a migration (read or write) swapped entry |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) | is_write_migration_entry | Tests a write migration swapped entry |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) | make_migration_entry_read | Converts into read migration swapped entry |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) | make_migration_entry | Creates a migration swapped entry (read or write)|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) +---------------------------+--------------------------------------------------+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) [1] https://lore.kernel.org/linux-mm/20181017020930.GN30832@redhat.com/
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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