--- zzzz-none-000/linux-2.6.19.2/arch/x86_64/kernel/process.c	2007-01-10 19:10:37.000000000 +0000
+++ davinci-8020-5505/linux-2.6.19.2/arch/x86_64/kernel/process.c	2007-01-19 15:11:30.000000000 +0000
@@ -88,8 +88,9 @@
 
 static void __exit_idle(void)
 {
-	if (test_and_clear_bit_pda(0, isidle) == 0)
+	if (read_pda(isidle) == 0)
 		return;
+	write_pda(isidle, 0);
 	atomic_notifier_call_chain(&idle_notifier, IDLE_END, NULL);
 }
 
@@ -148,7 +149,7 @@
 void cpu_idle_wait(void)
 {
 	unsigned int cpu, this_cpu = get_cpu();
-	cpumask_t map, tmp = current->cpus_allowed;
+	cpumask_t map;
 
 	set_cpus_allowed(current, cpumask_of_cpu(this_cpu));
 	put_cpu();
@@ -171,8 +172,6 @@
 		}
 		cpus_and(map, map, cpu_online_map);
 	} while (!cpus_empty(map));
-
-	set_cpus_allowed(current, tmp);
 }
 EXPORT_SYMBOL_GPL(cpu_idle_wait);
 
@@ -875,10 +874,3 @@
  
 	return 1;
 }
-
-unsigned long arch_align_stack(unsigned long sp)
-{
-	if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
-		sp -= get_random_int() % 8192;
-	return sp & ~0xf;
-}