1 files changed, 4 insertions, 2 deletions

diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 37273f518a35..3d83c3b84f0e 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -328,12 +328,14 @@ static void __init htab_init_page_sizes(void)
          */
         if (mmu_psize_defs[MMU_PAGE_16M].shift)
                 mmu_huge_psize = MMU_PAGE_16M;
+        /* With 4k/4level pagetables, we can't (for now) cope with a
+         * huge page size < PMD_SIZE */
         else if (mmu_psize_defs[MMU_PAGE_1M].shift)
                 mmu_huge_psize = MMU_PAGE_1M;
 
         /* Calculate HPAGE_SHIFT and sanity check it */
-        if (mmu_psize_defs[mmu_huge_psize].shift > 16 &&
-            mmu_psize_defs[mmu_huge_psize].shift < 28)
+        if (mmu_psize_defs[mmu_huge_psize].shift > MIN_HUGEPTE_SHIFT &&
+            mmu_psize_defs[mmu_huge_psize].shift < SID_SHIFT)
                 HPAGE_SHIFT = mmu_psize_defs[mmu_huge_psize].shift;
         else
                 HPAGE_SHIFT = 0; /* No huge pages dude ! */