powerpc/mm/radix: Make sure swapper pgdir is properly aligned

With 4K page size radix config our level 1 page table size is 64K and it
should be naturally aligned.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index 4286775..2d14774 100644 (file)
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -973,13 +973,16 @@ start_here_common:
  * This stuff goes at the beginning of the bss, which is page-aligned.
  */
        .section ".bss"
+/*
+ * pgd dir should be aligned to PGD_TABLE_SIZE which is 64K.
+ * We will need to find a better way to fix this
+ */
+       .align  16
 
-       .align  PAGE_SHIFT
+       .globl  swapper_pg_dir
+swapper_pg_dir:
+       .space  PGD_TABLE_SIZE
 
        .globl  empty_zero_page
 empty_zero_page:
        .space  PAGE_SIZE
-
-       .globl  swapper_pg_dir
-swapper_pg_dir:
-       .space  PGD_TABLE_SIZE