[PATCH v3 63/70] powerpc/mm/radix: Make sure swapper pgdir is properly aligned
From: Michael Ellerman <mpe@ellerman.id.au>
Date: 2016-04-29 13:27:38
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Linus Torvalds
From: "Aneesh Kumar K.V" <redacted> 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 <redacted> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> --- 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