powerpc/mm: Add support for SPARSEMEM_VMEMMAP on 64-bit Book3E

[linux-2.6-block.git] / arch / powerpc / include / asm / pgtable-ppc64.h

diff --git a/arch/powerpc/include/asm/pgtable-ppc64.h b/arch/powerpc/include/asm/pgtable-ppc64.h
index 7254c5a3187c8634e4eba600b6c2a85e6c85cae9..200ec2dfa034adbc971c2992b5f4153cc6eb36cb 100644 (file)
--- a/arch/powerpc/include/asm/pgtable-ppc64.h
+++ b/arch/powerpc/include/asm/pgtable-ppc64.h
@@ -46,6 +46,7 @@
 /*
  * The vmalloc space starts at the beginning of that region, and
  * occupies half of it on hash CPUs and a quarter of it on Book3E
+ * (we keep a quarter for the virtual memmap)
  */
 #define VMALLOC_START  KERN_VIRT_START
 #ifdef CONFIG_PPC_BOOK3E
@@ -83,7 +84,7 @@
 
 #define VMALLOC_REGION_ID      (REGION_ID(VMALLOC_START))
 #define KERNEL_REGION_ID       (REGION_ID(PAGE_OFFSET))
-#define VMEMMAP_REGION_ID      (0xfUL)
+#define VMEMMAP_REGION_ID      (0xfUL) /* Server only */
 #define USER_REGION_ID         (0UL)
 
 /*