[v4,5/5] powerpc/8xx: Increase number of slices to 64

Message ID 61813627b8aef562c425364c89fde863e77974c7.1518226173.git.christophe.leroy@c-s.fr
State Superseded
Headers show
Series
  • [v4,1/5] powerpc/mm/slice: Remove intermediate bitmap copy
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Commit Message

Christophe Leroy Feb. 10, 2018, 12:54 p.m.
On the 8xx, the minimum slice size is the size of the area
covered by a single PMD entry, ie 4M in 4K pages mode and 64M in
16K pages mode.

This patch increases the number of slices from 16 to 64 on the 8xx.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
 v4: New
 
 arch/powerpc/include/asm/nohash/32/slice.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch

diff --git a/arch/powerpc/include/asm/nohash/32/slice.h b/arch/powerpc/include/asm/nohash/32/slice.h
index bcb4924f7d22..3deaaea89473 100644
--- a/arch/powerpc/include/asm/nohash/32/slice.h
+++ b/arch/powerpc/include/asm/nohash/32/slice.h
@@ -4,7 +4,7 @@ 
 
 #ifdef CONFIG_PPC_MM_SLICES
 
-#define SLICE_LOW_SHIFT		28
+#define SLICE_LOW_SHIFT		26	/* 64 slices */
 #define SLICE_LOW_TOP		(0x100000000ull)
 #define SLICE_NUM_LOW		(SLICE_LOW_TOP >> SLICE_LOW_SHIFT)
 #define GET_LOW_SLICE_INDEX(addr)	((addr) >> SLICE_LOW_SHIFT)