powerpc/8xx: Increase number of slices to 64

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>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/include/asm/nohash/32/slice.h b/arch/powerpc/include/asm/nohash/32/slice.h
index 95d532e180922e779cfa212d8f4a5395533484e2..777d62e40ac04a13440661bcb07c60388c2fd841 100644 (file)
--- 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)