Diffstat (limited to 'include/asm-powerpc/pgtable-64k.h')
1 files changed, 3 insertions, 5 deletions
diff --git a/include/asm-powerpc/pgtable-64k.h b/include/asm-powerpc/pgtable-64k.h
index 31cbd3d7fce8..33ae9018fe72 100644
@@ -49,12 +49,10 @@
/* Shift to put page number into pte.
- * That gives us a max RPN of 32 bits, which means a max of 48 bits
- * of addressable physical space.
- * We could get 3 more bits here by setting PTE_RPN_SHIFT to 29 but
- * 32 makes PTEs more readable for debugging for now :)
+ * That gives us a max RPN of 34 bits, which means a max of 50 bits
+ * of addressable physical space, or 46 bits for the special 4k PFNs.
-#define PTE_RPN_SHIFT (32)
+#define PTE_RPN_SHIFT (30)
#define PTE_RPN_MAX (1UL << (64 - PTE_RPN_SHIFT))
#define PTE_RPN_MASK (~((1UL<<PTE_RPN_SHIFT)-1))