diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/mm/pgtable_32.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c index c284bdac9947..95d3afe36b51 100644 --- a/arch/powerpc/mm/pgtable_32.c +++ b/arch/powerpc/mm/pgtable_32.c @@ -266,9 +266,12 @@ int map_page(unsigned long va, phys_addr_t pa, int flags) pg = pte_alloc_kernel(pd, va); if (pg != 0) { err = 0; - set_pte_at(&init_mm, va, pg, pfn_pte(pa >> PAGE_SHIFT, __pgprot(flags))); - if (mem_init_done) - flush_HPTE(0, va, pmd_val(*pd)); + /* The PTE should never be already set nor present in the + * hash table + */ + BUG_ON(pte_val(*pg) & (_PAGE_PRESENT | _PAGE_HASHPTE)); + set_pte_at(&init_mm, va, pg, pfn_pte(pa >> PAGE_SHIFT, + __pgprot(flags))); } return err; } |