diff options
Diffstat (limited to 'arch/arm/mm/fault.c')
| -rw-r--r-- | arch/arm/mm/fault.c | 29 |
1 files changed, 25 insertions, 4 deletions
diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c index ef0e24f578ef..bc0e1d88fd3b 100644 --- a/arch/arm/mm/fault.c +++ b/arch/arm/mm/fault.c @@ -80,6 +80,7 @@ void show_pte(struct mm_struct *mm, unsigned long addr) addr, (long long)pgd_val(*pgd)); do { + pud_t *pud; pmd_t *pmd; pte_t *pte; @@ -91,7 +92,19 @@ void show_pte(struct mm_struct *mm, unsigned long addr) break; } - pmd = pmd_offset(pgd, addr); + pud = pud_offset(pgd, addr); + if (PTRS_PER_PUD != 1) + printk(", *pud=%08lx", pud_val(*pud)); + + if (pud_none(*pud)) + break; + + if (pud_bad(*pud)) { + printk("(bad)"); + break; + } + + pmd = pmd_offset(pud, addr); if (PTRS_PER_PMD != 1) printk(", *pmd=%08llx", (long long)pmd_val(*pmd)); @@ -390,6 +403,7 @@ do_translation_fault(unsigned long addr, unsigned int fsr, { unsigned int index; pgd_t *pgd, *pgd_k; + pud_t *pud, *pud_k; pmd_t *pmd, *pmd_k; if (addr < TASK_SIZE) @@ -408,12 +422,19 @@ do_translation_fault(unsigned long addr, unsigned int fsr, if (pgd_none(*pgd_k)) goto bad_area; - if (!pgd_present(*pgd)) set_pgd(pgd, *pgd_k); - pmd_k = pmd_offset(pgd_k, addr); - pmd = pmd_offset(pgd, addr); + pud = pud_offset(pgd, addr); + pud_k = pud_offset(pgd_k, addr); + + if (pud_none(*pud_k)) + goto bad_area; + if (!pud_present(*pud)) + set_pud(pud, *pud_k); + + pmd = pmd_offset(pud, addr); + pmd_k = pmd_offset(pud_k, addr); /* * On ARM one Linux PGD entry contains two hardware entries (see page |