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Subject[PATCH] ARM: replace magic number with PAGE_SHIFT macro in fixup_pv code
Date
This line converts PHYS_OFFSET into PHYS_PFN_OFFSET.
It is better to use PAGE_SHIFT rather than the magic number 12.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
---

arch/arm/kernel/head.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index 664eee8..ecb7be8 100644
--- a/arch/arm/kernel/head.S
+++ b/arch/arm/kernel/head.S
@@ -586,7 +586,7 @@ __fixup_pv_table:
add r5, r5, r3 @ adjust table end address
add r6, r6, r3 @ adjust __pv_phys_pfn_offset address
add r7, r7, r3 @ adjust __pv_offset address
- mov r0, r8, lsr #12 @ convert to PFN
+ mov r0, r8, lsr #PAGE_SHIFT @ convert to PFN
str r0, [r6] @ save computed PHYS_OFFSET to __pv_phys_pfn_offset
strcc ip, [r7, #HIGH_OFFSET] @ save to __pv_offset high bits
mov r6, r3, lsr #24 @ constant for add/sub instructions
--
1.9.1


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