1 files changed, 27 insertions, 1 deletions

diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c
index 9d2b0da590af..513993414747 100644
--- a/arch/sparc64/mm/init.c
+++ b/arch/sparc64/mm/init.c
@@ -1396,7 +1396,7 @@ static void __init taint_real_pages(void)
                 while (old_start < old_end) {
                         int n;
 
-                        for (n = 0; pavail_rescan_ents; n++) {
+                        for (n = 0; n < pavail_rescan_ents; n++) {
                                 unsigned long new_start, new_end;
 
                                 new_start = pavail_rescan[n].phys_addr;
@@ -1418,6 +1418,32 @@ static void __init taint_real_pages(void)
         }
 }
 
+int __init page_in_phys_avail(unsigned long paddr)
+{
+        int i;
+
+        paddr &= PAGE_MASK;
+
+        for (i = 0; i < pavail_rescan_ents; i++) {
+                unsigned long start, end;
+
+                start = pavail_rescan[i].phys_addr;
+                end = start + pavail_rescan[i].reg_size;
+
+                if (paddr >= start && paddr < end)
+                        return 1;
+        }
+        if (paddr >= kern_base && paddr < (kern_base + kern_size))
+                return 1;
+#ifdef CONFIG_BLK_DEV_INITRD
+        if (paddr >= __pa(initrd_start) &&
+            paddr < __pa(PAGE_ALIGN(initrd_end)))
+                return 1;
+#endif
+
+        return 0;
+}
+
 void __init mem_init(void)
 {
         unsigned long codepages, datapages, initpages;