diff -urpN -X /home/fletch/.diff.exclude 222-stack_usage_check/arch/i386/Kconfig 223-4k_stacks/arch/i386/Kconfig
--- 222-stack_usage_check/arch/i386/Kconfig	Sat Jun 14 20:20:49 2003
+++ 223-4k_stacks/arch/i386/Kconfig	Sat Jun 14 20:20:49 2003
@@ -752,6 +752,16 @@ config HIGHPTE
 	  low memory.  Setting this option will put user-space page table
 	  entries in high memory.
 
+config 4K_STACK
+	bool "Use smaller 4k per-task stacks"
+	help
+	  This option will shrink the kernel's per-task stack from 8k to
+	  4k.  This will greatly increase your chance of overflowing it.
+	  But, if you use the per-cpu interrupt stacks as well, your chances
+	  go way down.  Also try the CONFIG_X86_STACK_CHECK overflow
+	  detection.  It is much more reliable than the currently in-kernel
+	  version.
+
 config MATH_EMULATION
 	bool "Math emulation"
 	---help---
diff -urpN -X /home/fletch/.diff.exclude 222-stack_usage_check/include/asm-i386/thread_info.h 223-4k_stacks/include/asm-i386/thread_info.h
--- 222-stack_usage_check/include/asm-i386/thread_info.h	Sat Jun 14 20:20:49 2003
+++ 223-4k_stacks/include/asm-i386/thread_info.h	Sat Jun 14 20:20:49 2003
@@ -63,10 +63,16 @@ struct thread_info {
  *
  * preempt_count needs to be 1 initially, until the scheduler is functional.
  */
-#define THREAD_ORDER 1 
+#ifdef CONFIG_4K_STACK
+#define THREAD_ORDER 0
+#define STACK_WARN		0x200
+#define STACK_PANIC		0x100
+#else
+#define THREAD_ORDER 1
+#define STACK_WARN              ((THREAD_SIZE)>>1)
+#define STACK_PANIC             0x100
+#endif
 #define INIT_THREAD_SIZE       THREAD_SIZE
-#define STACK_PANIC		0x200ul
-#define STACK_WARN		((THREAD_SIZE)>>1)
 
 #ifndef __ASSEMBLY__