Index: linux-2.6.15.3-kgdb/kernel/kgdb.c
===================================================================
--- linux-2.6.15.3-kgdb.orig/kernel/kgdb.c
+++ linux-2.6.15.3-kgdb/kernel/kgdb.c
@@ -740,7 +740,7 @@ static void kgdb_wait(struct pt_regs *re
 	unsigned long flags;
 	int processor;
 
-	local_irq_save(flags);
+	local_irq_save_hw(flags);
 	processor = smp_processor_id();
 	kgdb_info[processor].debuggerinfo = regs;
 	kgdb_info[processor].task = current;
@@ -770,7 +770,7 @@ static void kgdb_wait(struct pt_regs *re
 	/* Signal the master processor that we are done */
 	atomic_set(&procindebug[processor], 0);
 	spin_unlock(&slavecpulocks[processor]);
-	local_irq_restore(flags);
+	local_irq_restore_hw(flags);
 }
 #endif
 
@@ -1033,7 +1033,7 @@ int kgdb_handle_exception(int ex_vector,
 	 * Interrupts will be restored by the 'trap return' code, except when
 	 * single stepping.
 	 */
-	local_irq_save(flags);
+	local_irq_save_hw(flags);
 
 	/* Hold debugger_active */
 	procid = smp_processor_id();
@@ -1056,7 +1056,7 @@ int kgdb_handle_exception(int ex_vector,
 	if (atomic_read(&cpu_doing_single_step) != -1 &&
 	    atomic_read(&cpu_doing_single_step) != procid) {
 		atomic_set(&debugger_active, 0);
-		local_irq_restore(flags);
+		local_irq_restore_hw(flags);
 		goto acquirelock;
 	}
 
@@ -1556,7 +1556,7 @@ int kgdb_handle_exception(int ex_vector,
 kgdb_restore:
 	/* Free debugger_active */
 	atomic_set(&debugger_active, 0);
-	local_irq_restore(flags);
+	local_irq_restore_hw(flags);
 
 	return error;
 }
@@ -1925,9 +1925,9 @@ static int kgdb_notify_reboot(struct not
 	if (!kgdb_connected || atomic_read(&debugger_active) != 0)
 		return 0;
 	if ((code == SYS_RESTART) || (code == SYS_HALT) || (code == SYS_POWER_OFF)){
-		local_irq_save(flags);
+		local_irq_save_hw(flags);
 		put_packet("X00");
-		local_irq_restore(flags);
+		local_irq_restore_hw(flags);
 	}
 	return NOTIFY_DONE;
 }		
@@ -1942,9 +1942,9 @@ void kgdb_console_write(struct console *
 	if (!kgdb_connected || atomic_read(&debugger_active) != 0)
 		return;
 
-	local_irq_save(flags);
+	local_irq_save_hw(flags);
 	kgdb_msg_write(s, count);
-	local_irq_restore(flags);
+	local_irq_restore_hw(flags);
 }
 
 static struct console kgdbcons = {
Index: linux-2.6.15.3-kgdb/drivers/serial/8250_kgdb.c
===================================================================
--- linux-2.6.15.3-kgdb.orig/drivers/serial/8250_kgdb.c
+++ linux-2.6.15.3-kgdb/drivers/serial/8250_kgdb.c
@@ -301,6 +301,10 @@ static void __init kgdb8250_late_init(vo
 			"GDB-stub", current_port) < 0)
 		printk(KERN_ERR "KGDB failed to request the serial IRQ (%d)\n",
 		       current_port->irq);
+#ifdef CONFIG_IPIPE
+	ipipe_control_irq(current_port->irq, 0,
+			IPIPE_HANDLE_MASK|IPIPE_STICKY_MASK|IPIPE_SYSTEM_MASK);
+#endif /* CONFIG_IPIPE */
 }
 
 static __init int kgdb_init_io(void)
Index: linux-2.6.15.3-kgdb/lib/Kconfig.debug
===================================================================
--- linux-2.6.15.3-kgdb.orig/lib/Kconfig.debug
+++ linux-2.6.15.3-kgdb/lib/Kconfig.debug
@@ -250,7 +250,7 @@ choice
 
 config KGDB_ONLY_MODULES
 	bool "KGDB: Use only kernel modules for I/O"
-	depends on MODULES
+	depends on MODULES && !IPIPE
 	help
 	  Use only kernel modules to configure KGDB I/O after the
 	  kernel is booted.
@@ -295,7 +295,7 @@ config KGDB_SIBYTE
 endchoice
 
 config KGDBOE
-	tristate "KGDB: On ethernet" if !KGDBOE_NOMODULE
+	tristate "KGDB: On ethernet" if !KGDBOE_NOMODULE && !IPIPE
 	depends on m && KGDB
 	select NETPOLL
 	select NETPOLL_TRAP