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3ff38e1874
Since commitbd0dbb73e0("powerpc/mm/books3s: Add new pte bit to mark pte temporarily invalid."), _PAGE_PRESENT doesn't mean exactly that a page is present. A page is also considered preset when _PAGE_INVALID is set. This patch changes the meaning of "present" and adds a status "valid" associated to the _PAGE_PRESENT flag. Fixes:bd0dbb73e0("powerpc/mm/books3s: Add new pte bit to mark pte temporarily invalid.") Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
121 lines
2.2 KiB
C
121 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* From split of dump_linuxpagetables.c
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* Copyright 2016, Rashmica Gupta, IBM Corp.
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*
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*/
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#include <linux/kernel.h>
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#include <asm/pgtable.h>
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#include "dump_linuxpagetables.h"
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static const struct flag_info flag_array[] = {
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{
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.mask = _PAGE_PRIVILEGED,
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.val = 0,
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.set = "user",
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.clear = " ",
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}, {
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.mask = _PAGE_READ,
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.val = _PAGE_READ,
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.set = "r",
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.clear = " ",
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}, {
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.mask = _PAGE_WRITE,
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.val = _PAGE_WRITE,
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.set = "w",
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.clear = " ",
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}, {
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.mask = _PAGE_EXEC,
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.val = _PAGE_EXEC,
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.set = " X ",
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.clear = " ",
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}, {
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.mask = _PAGE_PTE,
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.val = _PAGE_PTE,
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.set = "pte",
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.clear = " ",
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}, {
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.mask = _PAGE_PRESENT,
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.val = _PAGE_PRESENT,
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.set = "valid",
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.clear = " ",
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}, {
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.mask = _PAGE_PRESENT | _PAGE_INVALID,
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.val = 0,
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.set = " ",
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.clear = "present",
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}, {
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.mask = H_PAGE_HASHPTE,
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.val = H_PAGE_HASHPTE,
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.set = "hpte",
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.clear = " ",
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}, {
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.mask = _PAGE_DIRTY,
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.val = _PAGE_DIRTY,
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.set = "dirty",
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.clear = " ",
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}, {
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.mask = _PAGE_ACCESSED,
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.val = _PAGE_ACCESSED,
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.set = "accessed",
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.clear = " ",
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}, {
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.mask = _PAGE_NON_IDEMPOTENT,
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.val = _PAGE_NON_IDEMPOTENT,
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.set = "non-idempotent",
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.clear = " ",
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}, {
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.mask = _PAGE_TOLERANT,
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.val = _PAGE_TOLERANT,
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.set = "tolerant",
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.clear = " ",
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}, {
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.mask = H_PAGE_BUSY,
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.val = H_PAGE_BUSY,
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.set = "busy",
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}, {
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#ifdef CONFIG_PPC_64K_PAGES
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.mask = H_PAGE_COMBO,
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.val = H_PAGE_COMBO,
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.set = "combo",
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}, {
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.mask = H_PAGE_4K_PFN,
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.val = H_PAGE_4K_PFN,
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.set = "4K_pfn",
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}, {
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#else /* CONFIG_PPC_64K_PAGES */
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.mask = H_PAGE_F_GIX,
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.val = H_PAGE_F_GIX,
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.set = "f_gix",
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.is_val = true,
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.shift = H_PAGE_F_GIX_SHIFT,
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}, {
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.mask = H_PAGE_F_SECOND,
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.val = H_PAGE_F_SECOND,
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.set = "f_second",
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}, {
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#endif /* CONFIG_PPC_64K_PAGES */
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.mask = _PAGE_SPECIAL,
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.val = _PAGE_SPECIAL,
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.set = "special",
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}
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};
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struct pgtable_level pg_level[5] = {
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{
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}, { /* pgd */
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.flag = flag_array,
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.num = ARRAY_SIZE(flag_array),
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}, { /* pud */
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.flag = flag_array,
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.num = ARRAY_SIZE(flag_array),
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}, { /* pmd */
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.flag = flag_array,
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.num = ARRAY_SIZE(flag_array),
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}, { /* pte */
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.flag = flag_array,
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.num = ARRAY_SIZE(flag_array),
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},
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};
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