diff options
| -rw-r--r-- | arch/powerpc/mm/pgtable-radix.c | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/arch/powerpc/mm/pgtable-radix.c b/arch/powerpc/mm/pgtable-radix.c index aef9d49f70ce..30374586e01d 100644 --- a/arch/powerpc/mm/pgtable-radix.c +++ b/arch/powerpc/mm/pgtable-radix.c @@ -527,6 +527,15 @@ static void remove_pte_table(pte_t *pte_start, unsigned long addr, if (!pte_present(*pte)) continue; + if (!PAGE_ALIGNED(addr) || !PAGE_ALIGNED(next)) { + /* + * The vmemmap_free() and remove_section_mapping() + * codepaths call us with aligned addresses. + */ + WARN_ONCE(1, "%s: unaligned range\n", __func__); + continue; + } + pte_clear(&init_mm, addr, pte); } } @@ -546,6 +555,12 @@ static void remove_pmd_table(pmd_t *pmd_start, unsigned long addr, continue; if (pmd_huge(*pmd)) { + if (!IS_ALIGNED(addr, PMD_SIZE) || + !IS_ALIGNED(next, PMD_SIZE)) { + WARN_ONCE(1, "%s: unaligned range\n", __func__); + continue; + } + pte_clear(&init_mm, addr, (pte_t *)pmd); continue; } @@ -571,6 +586,12 @@ static void remove_pud_table(pud_t *pud_start, unsigned long addr, continue; if (pud_huge(*pud)) { + if (!IS_ALIGNED(addr, PUD_SIZE) || + !IS_ALIGNED(next, PUD_SIZE)) { + WARN_ONCE(1, "%s: unaligned range\n", __func__); + continue; + } + pte_clear(&init_mm, addr, (pte_t *)pud); continue; } @@ -597,6 +618,12 @@ static void remove_pagetable(unsigned long start, unsigned long end) continue; if (pgd_huge(*pgd)) { + if (!IS_ALIGNED(addr, PGDIR_SIZE) || + !IS_ALIGNED(next, PGDIR_SIZE)) { + WARN_ONCE(1, "%s: unaligned range\n", __func__); + continue; + } + pte_clear(&init_mm, addr, (pte_t *)pgd); continue; } @@ -636,7 +663,7 @@ int __meminit radix__vmemmap_create_mapping(unsigned long start, #ifdef CONFIG_MEMORY_HOTPLUG void radix__vmemmap_remove_mapping(unsigned long start, unsigned long page_size) { - /* FIXME!! intel does more. We should free page tables mapping vmemmap ? */ + remove_pagetable(start, start + page_size); } #endif #endif |