fixed mm bug, now crashing because IDT isn't mapped via paging

git-svn-id: svn://anubis/hos/trunk@97 5b3e749e-e535-0410-8002-a9bb6afbdfca

kernel/mm/mm.cc

@@ -192,10 +192,11 @@ void mm_bootstrap()
     /* set the page directory base register */
     write_cr3(page_directory_phys);
 
+    /* set up permanent stack before enabling paging */
+    stack_bootstrap();
+
     /* turn on paging */
     write_cr0(read_cr0() | (1 << 31));
-
-    stack_bootstrap();
 }
 
 /**************************************************************************
@@ -210,6 +211,7 @@ static void record_phys_page(u32_t base_address)
         last_page_alloc_page++;
         page_alloc_pages_index++;
         page_alloc_page_numbers[last_page_alloc_page] = base_address;
+        page_alloc_page_index = 0;
     }
     else
     {