diff options
Diffstat (limited to 'arch/s390/mm/dump_pagetables.c')
| -rw-r--r-- | arch/s390/mm/dump_pagetables.c | 39 |
1 files changed, 27 insertions, 12 deletions
diff --git a/arch/s390/mm/dump_pagetables.c b/arch/s390/mm/dump_pagetables.c index 04e4892247d..46d517c3c76 100644 --- a/arch/s390/mm/dump_pagetables.c +++ b/arch/s390/mm/dump_pagetables.c @@ -49,10 +49,13 @@ static void print_prot(struct seq_file *m, unsigned int pr, int level) { "ASCE", "PGD", "PUD", "PMD", "PTE" }; seq_printf(m, "%s ", level_name[level]); - if (pr & _PAGE_INVALID) + if (pr & _PAGE_INVALID) { seq_printf(m, "I\n"); - else - seq_printf(m, "%s\n", pr & _PAGE_RO ? "RO" : "RW"); + return; + } + seq_printf(m, "%s", pr & _PAGE_PROTECT ? "RO " : "RW "); + seq_printf(m, "%s", pr & _PAGE_CO ? "CO " : " "); + seq_putc(m, '\n'); } static void note_page(struct seq_file *m, struct pg_state *st, @@ -102,12 +105,12 @@ static void note_page(struct seq_file *m, struct pg_state *st, } /* - * The actual page table walker functions. In order to keep the implementation - * of print_prot() short, we only check and pass _PAGE_INVALID and _PAGE_RO - * flags to note_page() if a region, segment or page table entry is invalid or - * read-only. - * After all it's just a hint that the current level being walked contains an - * invalid or read-only entry. + * The actual page table walker functions. In order to keep the + * implementation of print_prot() short, we only check and pass + * _PAGE_INVALID and _PAGE_PROTECT flags to note_page() if a region, + * segment or page table entry is invalid or read-only. + * After all it's just a hint that the current level being walked + * contains an invalid or read-only entry. */ static void walk_pte_level(struct seq_file *m, struct pg_state *st, pmd_t *pmd, unsigned long addr) @@ -119,12 +122,18 @@ static void walk_pte_level(struct seq_file *m, struct pg_state *st, for (i = 0; i < PTRS_PER_PTE && addr < max_addr; i++) { st->current_address = addr; pte = pte_offset_kernel(pmd, addr); - prot = pte_val(*pte) & (_PAGE_RO | _PAGE_INVALID); + prot = pte_val(*pte) & (_PAGE_PROTECT | _PAGE_INVALID); note_page(m, st, prot, 4); addr += PAGE_SIZE; } } +#ifdef CONFIG_64BIT +#define _PMD_PROT_MASK (_SEGMENT_ENTRY_PROTECT | _SEGMENT_ENTRY_CO) +#else +#define _PMD_PROT_MASK 0 +#endif + static void walk_pmd_level(struct seq_file *m, struct pg_state *st, pud_t *pud, unsigned long addr) { @@ -137,7 +146,7 @@ static void walk_pmd_level(struct seq_file *m, struct pg_state *st, pmd = pmd_offset(pud, addr); if (!pmd_none(*pmd)) { if (pmd_large(*pmd)) { - prot = pmd_val(*pmd) & _SEGMENT_ENTRY_RO; + prot = pmd_val(*pmd) & _PMD_PROT_MASK; note_page(m, st, prot, 3); } else walk_pte_level(m, st, pmd, addr); @@ -147,6 +156,12 @@ static void walk_pmd_level(struct seq_file *m, struct pg_state *st, } } +#ifdef CONFIG_64BIT +#define _PUD_PROT_MASK (_REGION3_ENTRY_RO | _REGION3_ENTRY_CO) +#else +#define _PUD_PROT_MASK 0 +#endif + static void walk_pud_level(struct seq_file *m, struct pg_state *st, pgd_t *pgd, unsigned long addr) { @@ -159,7 +174,7 @@ static void walk_pud_level(struct seq_file *m, struct pg_state *st, pud = pud_offset(pgd, addr); if (!pud_none(*pud)) if (pud_large(*pud)) { - prot = pud_val(*pud) & _PAGE_RO; + prot = pud_val(*pud) & _PUD_PROT_MASK; note_page(m, st, prot, 2); } else walk_pmd_level(m, st, pud, addr); |