aboutsummaryrefslogtreecommitdiffstats
path: root/arch/x86/mm/init_32.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/x86/mm/init_32.c')
-rw-r--r--arch/x86/mm/init_32.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index 33d367a3432e..c7d19471261d 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -85,13 +85,20 @@ static pmd_t * __init one_md_table_init(pgd_t *pgd)
85static pte_t * __init one_page_table_init(pmd_t *pmd) 85static pte_t * __init one_page_table_init(pmd_t *pmd)
86{ 86{
87 if (!(pmd_val(*pmd) & _PAGE_PRESENT)) { 87 if (!(pmd_val(*pmd) & _PAGE_PRESENT)) {
88 pte_t *page_table = (pte_t *) alloc_bootmem_low_pages(PAGE_SIZE); 88 pte_t *page_table = NULL;
89
90#ifdef CONFIG_DEBUG_PAGEALLOC
91 page_table = (pte_t *) alloc_bootmem_pages(PAGE_SIZE);
92#endif
93 if (!page_table)
94 page_table =
95 (pte_t *)alloc_bootmem_low_pages(PAGE_SIZE);
89 96
90 paravirt_alloc_pt(&init_mm, __pa(page_table) >> PAGE_SHIFT); 97 paravirt_alloc_pt(&init_mm, __pa(page_table) >> PAGE_SHIFT);
91 set_pmd(pmd, __pmd(__pa(page_table) | _PAGE_TABLE)); 98 set_pmd(pmd, __pmd(__pa(page_table) | _PAGE_TABLE));
92 BUG_ON(page_table != pte_offset_kernel(pmd, 0)); 99 BUG_ON(page_table != pte_offset_kernel(pmd, 0));
93 } 100 }
94 101
95 return pte_offset_kernel(pmd, 0); 102 return pte_offset_kernel(pmd, 0);
96} 103}
97 104