[PATCH V2 60/68] powerpc/mm/radix: Make sure swapper pgdir is properly aligned

Aneesh Kumar K.V aneesh.kumar at linux.vnet.ibm.com
Sat Apr 9 16:13:56 AEST 2016


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

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar at linux.vnet.ibm.com>
---
 arch/powerpc/kernel/head_64.S | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index 4286775cbde9..2d14774af6b4 100644
--- 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
-- 
2.5.0



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