[SPARC64]: Move over to sparsemem.

This has been pending for a long time, and the fact
that we waste a ton of ram on some configurations
kind of pushed things over the edge.

Signed-off-by: David S. Miller <davem@davemloft.net>

4 files changed, 19 insertions, 11 deletions

diff --git a/include/asm-sparc64/numnodes.h b/include/asm-sparc64/numnodes.h
new file mode 100644
index 000000000000..017e7e74f5e7
--- /dev/null
+++ b/include/asm-sparc64/numnodes.h
@@ -0,0 +1,6 @@
+#ifndef _SPARC64_NUMNODES_H
+#define _SPARC64_NUMNODES_H
+
+#define NODES_SHIFT     0
+
+#endif /* !(_SPARC64_NUMNODES_H) */
diff --git a/include/asm-sparc64/page.h b/include/asm-sparc64/page.h
index c277ac56b9d7..f6b49256fe2b 100644
--- a/include/asm-sparc64/page.h
+++ b/include/asm-sparc64/page.h
@@ -125,17 +125,10 @@ typedef unsigned long pgprot_t;
 #define __pa(x)                 ((unsigned long)(x) - PAGE_OFFSET)
 #define __va(x)                 ((void *)((unsigned long) (x) + PAGE_OFFSET))
 
-/* PFNs are real physical page numbers.  However, mem_map only begins to record
- * per-page information starting at pfn_base.  This is to handle systems where
- * the first physical page in the machine is at some huge physical address,
- * such as 4GB.   This is common on a partitioned E10000, for example.
- */
-extern struct page *pfn_to_page(unsigned long pfn);
-extern unsigned long page_to_pfn(struct page *);
+#define pfn_to_kaddr(pfn)       __va((pfn) << PAGE_SHIFT)
 
 #define virt_to_page(kaddr)     pfn_to_page(__pa(kaddr)>>PAGE_SHIFT)
 
-#define pfn_valid(pfn)          (((pfn)-(pfn_base)) < max_mapnr)
 #define virt_addr_valid(kaddr)  pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
 
 #define virt_to_phys __pa
diff --git a/include/asm-sparc64/pgtable.h b/include/asm-sparc64/pgtable.h
index 75a2cd2d7e81..d427ce649214 100644
--- a/include/asm-sparc64/pgtable.h
+++ b/include/asm-sparc64/pgtable.h
@@ -217,9 +217,6 @@ extern unsigned long pg_iobits;
 extern unsigned long _PAGE_ALL_SZ_BITS;
 extern unsigned long _PAGE_SZBITS;
 
-extern unsigned long phys_base;
-extern unsigned long pfn_base;
-
 extern struct page *mem_map_zero;
 #define ZERO_PAGE(vaddr)        (mem_map_zero)
 
diff --git a/include/asm-sparc64/sparsemem.h b/include/asm-sparc64/sparsemem.h
new file mode 100644
index 000000000000..ed5c9d8541e2
--- /dev/null
+++ b/include/asm-sparc64/sparsemem.h
@@ -0,0 +1,12 @@
+#ifndef _SPARC64_SPARSEMEM_H
+#define _SPARC64_SPARSEMEM_H
+
+#ifdef __KERNEL__
+
+#define SECTION_SIZE_BITS       26
+#define MAX_PHYSADDR_BITS       42
+#define MAX_PHYSMEM_BITS        42
+
+#endif /* !(__KERNEL__) */
+
+#endif /* !(_SPARC64_SPARSEMEM_H) */