diff -urN 2.2.15pre17/arch/alpha/vmlinux.lds bss/arch/alpha/vmlinux.lds
--- 2.2.15pre17/arch/alpha/vmlinux.lds	Mon Jan 17 16:44:33 2000
+++ bss/arch/alpha/vmlinux.lds	Fri Apr  7 02:14:59 2000
@@ -39,9 +39,11 @@
   .got : { *(.got) }
   .sdata : { *(.sdata) }
   _edata = .;
-  _bss = .;
+
+  __bss_start = .;
   .sbss : { *(.sbss) *(.scommon) }
   .bss : { *(.bss) *(COMMON) }
+  __bss_stop = .;
   _end = .;
 
   .mdebug 0 : { *(.mdebug) }
diff -urN 2.2.15pre17/arch/i386/vmlinux.lds.S bss/arch/i386/vmlinux.lds.S
--- 2.2.15pre17/arch/i386/vmlinux.lds.S	Mon Jan 17 16:44:33 2000
+++ bss/arch/i386/vmlinux.lds.S	Fri Apr  7 02:14:59 2000
@@ -56,6 +56,7 @@
   .bss : {
 	*(.bss)
 	}
+  __bss_stop = .;
   _end = . ;
 
   /* Stabs debugging sections.  */
diff -urN 2.2.15pre17/arch/ppc/vmlinux.lds bss/arch/ppc/vmlinux.lds
--- 2.2.15pre17/arch/ppc/vmlinux.lds	Mon Jan 17 16:44:35 2000
+++ bss/arch/ppc/vmlinux.lds	Fri Apr  7 02:14:59 2000
@@ -103,6 +103,7 @@
    *(.bss)
    *(COMMON)
   }
+  __bss_stop = .;
   _end = . ;
   PROVIDE (end = .);
 }
diff -urN 2.2.15pre17/arch/sparc/vmlinux.lds bss/arch/sparc/vmlinux.lds
--- 2.2.15pre17/arch/sparc/vmlinux.lds	Mon Jan 17 16:44:36 2000
+++ bss/arch/sparc/vmlinux.lds	Fri Apr  7 02:14:59 2000
@@ -50,6 +50,7 @@
    *(.bss)
    *(COMMON)
   }
+  __bss_stop = .;
   _end = . ;
   PROVIDE (end = .);
   /* Stabs debugging sections.  */
diff -urN 2.2.15pre17/arch/sparc64/vmlinux.lds bss/arch/sparc64/vmlinux.lds
--- 2.2.15pre17/arch/sparc64/vmlinux.lds	Mon Jan 17 16:44:36 2000
+++ bss/arch/sparc64/vmlinux.lds	Fri Apr  7 02:14:59 2000
@@ -49,6 +49,7 @@
    *(.bss)
    *(COMMON)
   }
+  __bss_stop = .;
   _end = . ;
   PROVIDE (end = .);
   /* Stabs debugging sections.  */
diff -urN 2.2.15pre17/init/main.c bss/init/main.c
--- 2.2.15pre17/init/main.c	Sun Apr  2 21:08:10 2000
+++ bss/init/main.c	Fri Apr  7 02:14:59 2000
@@ -1252,6 +1252,13 @@
 
 extern void initialize_secondary(void);
 
+static void __init clear_bss(void)
+{
+	extern char * __bss_start, __bss_stop;
+	memset(__bss_start, 0,
+	       (unsigned long) __bss_stop - (unsigned long) __bss_start);
+}
+
 /*
  *	Activate the first processor.
  */
@@ -1259,9 +1266,13 @@
 asmlinkage void __init start_kernel(void)
 {
 	char * command_line;
-
 #ifdef __SMP__
 	static int boot_cpu = 1;
+#endif
+
+	clear_bss();
+
+#ifdef __SMP__
 	/* "current" has been set up, we need to load it now */
 	if (!boot_cpu)
 		initialize_secondary();