x86: always enable irqs when entering idle

This matches x86_64 behaviour, which is a superior one IMHO

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 7 insertions, 2 deletions

diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c
index ec05fb750df..08c41ed5e80 100644
--- a/arch/x86/kernel/process_32.c
+++ b/arch/x86/kernel/process_32.c
@@ -127,6 +127,7 @@ void default_idle(void)
                 local_irq_enable();
                 current_thread_info()->status |= TS_POLLING;
         } else {
+                local_irq_enable();
                 /* loop is done by the caller */
                 cpu_relax();
         }
@@ -142,6 +143,7 @@ EXPORT_SYMBOL(default_idle);
  */
 static void poll_idle(void)
 {
+        local_irq_enable();
         cpu_relax();
 }
 
@@ -248,8 +250,11 @@ void mwait_idle_with_hints(unsigned long ax, unsigned long cx)
                 __monitor((void *)&current_thread_info()->flags, 0, 0);
                 smp_mb();
                 if (!need_resched())
-                        __mwait(ax, cx);
-        }
+                        __sti_mwait(ax, cx);
+                else
+                        local_irq_enable();
+        } else
+                local_irq_enable();
 }
 
 /* Default MONITOR/MWAIT with no hints, used for default C1 state */