diff options
Diffstat (limited to 'arch/sh/mm/init.c')
| -rw-r--r-- | arch/sh/mm/init.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c index 8ea27ca4b70..d1a979eab65 100644 --- a/arch/sh/mm/init.c +++ b/arch/sh/mm/init.c @@ -80,6 +80,7 @@ void show_mem(void) static void set_pte_phys(unsigned long addr, unsigned long phys, pgprot_t prot) { pgd_t *pgd; + pud_t *pud; pmd_t *pmd; pte_t *pte; @@ -89,7 +90,17 @@ static void set_pte_phys(unsigned long addr, unsigned long phys, pgprot_t prot) return; } - pmd = pmd_offset(pgd, addr); + pud = pud_offset(pgd, addr); + if (pud_none(*pud)) { + pmd = (pmd_t *)get_zeroed_page(GFP_ATOMIC); + set_pud(pud, __pud(__pa(pmd) | _KERNPG_TABLE | _PAGE_USER)); + if (pmd != pmd_offset(pud, 0)) { + pud_ERROR(*pud); + return; + } + } + + pmd = pmd_offset(pud, addr); if (pmd_none(*pmd)) { pte = (pte_t *)get_zeroed_page(GFP_ATOMIC); set_pmd(pmd, __pmd(__pa(pte) | _KERNPG_TABLE | _PAGE_USER)); |