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Diffstat (limited to 'arch/powerpc/mm/nohash/book3e_pgtable.c')
-rw-r--r--arch/powerpc/mm/nohash/book3e_pgtable.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/arch/powerpc/mm/nohash/book3e_pgtable.c b/arch/powerpc/mm/nohash/book3e_pgtable.c
index 4637fdd469cf..77884e24281d 100644
--- a/arch/powerpc/mm/nohash/book3e_pgtable.c
+++ b/arch/powerpc/mm/nohash/book3e_pgtable.c
@@ -73,6 +73,7 @@ static void __init *early_alloc_pgtable(unsigned long size)
int __ref map_kernel_page(unsigned long ea, unsigned long pa, pgprot_t prot)
{
pgd_t *pgdp;
+ p4d_t *p4dp;
pud_t *pudp;
pmd_t *pmdp;
pte_t *ptep;
@@ -80,7 +81,8 @@ int __ref map_kernel_page(unsigned long ea, unsigned long pa, pgprot_t prot)
BUILD_BUG_ON(TASK_SIZE_USER64 > PGTABLE_RANGE);
if (slab_is_available()) {
pgdp = pgd_offset_k(ea);
- pudp = pud_alloc(&init_mm, pgdp, ea);
+ p4dp = p4d_offset(pgdp, ea);
+ pudp = pud_alloc(&init_mm, p4dp, ea);
if (!pudp)
return -ENOMEM;
pmdp = pmd_alloc(&init_mm, pudp, ea);
@@ -91,13 +93,12 @@ int __ref map_kernel_page(unsigned long ea, unsigned long pa, pgprot_t prot)
return -ENOMEM;
} else {
pgdp = pgd_offset_k(ea);
-#ifndef __PAGETABLE_PUD_FOLDED
- if (pgd_none(*pgdp)) {
- pudp = early_alloc_pgtable(PUD_TABLE_SIZE);
- pgd_populate(&init_mm, pgdp, pudp);
+ p4dp = p4d_offset(pgdp, ea);
+ if (p4d_none(*p4dp)) {
+ pmdp = early_alloc_pgtable(PMD_TABLE_SIZE);
+ p4d_populate(&init_mm, p4dp, pmdp);
}
-#endif /* !__PAGETABLE_PUD_FOLDED */
- pudp = pud_offset(pgdp, ea);
+ pudp = pud_offset(p4dp, ea);
if (pud_none(*pudp)) {
pmdp = early_alloc_pgtable(PMD_TABLE_SIZE);
pud_populate(&init_mm, pudp, pmdp);