1 files changed, 29 insertions, 8 deletions

diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index 16def4dcff6d..5ccb579b81e4 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -45,6 +45,7 @@
 #include <asm/tlb.h>
 #include <asm/sections.h>
 #include <asm/vdso.h>
+#include <asm/fixmap.h>
 
 #include "mmu_decl.h"
 
@@ -57,6 +58,20 @@ int init_bootmem_done;
 int mem_init_done;
 unsigned long memory_limit;
 
+#ifdef CONFIG_HIGHMEM
+pte_t *kmap_pte;
+pgprot_t kmap_prot;
+
+EXPORT_SYMBOL(kmap_prot);
+EXPORT_SYMBOL(kmap_pte);
+
+static inline pte_t *virt_to_kpte(unsigned long vaddr)
+{
+        return pte_offset_kernel(pmd_offset(pud_offset(pgd_offset_k(vaddr),
+                        vaddr), vaddr), vaddr);
+}
+#endif
+
 int page_is_ram(unsigned long pfn)
 {
         unsigned long paddr = (pfn << PAGE_SHIFT);
@@ -216,7 +231,7 @@ void __init do_init_bootmem(void)
         unsigned long total_pages;
         int boot_mapsize;
 
-        max_pfn = lmb_end_of_DRAM() >> PAGE_SHIFT;
+        max_low_pfn = max_pfn = lmb_end_of_DRAM() >> PAGE_SHIFT;
         total_pages = (lmb_end_of_DRAM() - memstart_addr) >> PAGE_SHIFT;
 #ifdef CONFIG_HIGHMEM
         total_pages = total_lowmem >> PAGE_SHIFT;
@@ -232,7 +247,8 @@ void __init do_init_bootmem(void)
 
         start = lmb_alloc(bootmap_pages << PAGE_SHIFT, PAGE_SIZE);
 
-        boot_mapsize = init_bootmem(start >> PAGE_SHIFT, total_pages);
+        min_low_pfn = MEMORY_START >> PAGE_SHIFT;
+        boot_mapsize = init_bootmem_node(NODE_DATA(0), start >> PAGE_SHIFT, min_low_pfn, max_low_pfn);
 
         /* Add active regions with valid PFNs */
         for (i = 0; i < lmb.memory.cnt; i++) {
@@ -310,14 +326,19 @@ void __init paging_init(void)
         unsigned long top_of_ram = lmb_end_of_DRAM();
         unsigned long max_zone_pfns[MAX_NR_ZONES];
 
+#ifdef CONFIG_PPC32
+        unsigned long v = __fix_to_virt(__end_of_fixed_addresses - 1);
+        unsigned long end = __fix_to_virt(FIX_HOLE);
+
+        for (; v < end; v += PAGE_SIZE)
+                map_page(v, 0, 0); /* XXX gross */
+#endif
+
 #ifdef CONFIG_HIGHMEM
         map_page(PKMAP_BASE, 0, 0);     /* XXX gross */
-        pkmap_page_table = pte_offset_kernel(pmd_offset(pud_offset(pgd_offset_k
-                        (PKMAP_BASE), PKMAP_BASE), PKMAP_BASE), PKMAP_BASE);
-        map_page(KMAP_FIX_BEGIN, 0, 0); /* XXX gross */
-        kmap_pte = pte_offset_kernel(pmd_offset(pud_offset(pgd_offset_k
-                        (KMAP_FIX_BEGIN), KMAP_FIX_BEGIN), KMAP_FIX_BEGIN),
-                         KMAP_FIX_BEGIN);
+        pkmap_page_table = virt_to_kpte(PKMAP_BASE);
+
+        kmap_pte = virt_to_kpte(__fix_to_virt(FIX_KMAP_BEGIN));
         kmap_prot = PAGE_KERNEL;
 #endif /* CONFIG_HIGHMEM */