[IA64] fix interrupt masking for pending works on kernel leave

[linux-2.6-omap-h63xx.git] / arch / ia64 / kernel / entry.S

diff --git a/arch/ia64/kernel/entry.S b/arch/ia64/kernel/entry.S
index e49ad8c5dc6954303f47dd3d050525ff3353c800..ef6b0313c857cf7830307a13e762df6510cb09c6 100644 (file)
--- a/arch/ia64/kernel/entry.S
+++ b/arch/ia64/kernel/entry.S
@@ -1156,6 +1156,9 @@ skip_rbs_switch:
         *      r31 = current->thread_info->flags
         * On exit:
         *      p6 = TRUE if work-pending-check needs to be redone
+        *
+        * Interrupts are disabled on entry, reenabled depend on work, and
+        * disabled on exit.
         */
 .work_pending_syscall:
        add r2=-8,r2
@@ -1170,8 +1173,8 @@ skip_rbs_switch:
 (pKStk) dep r21=-1,r0,PREEMPT_ACTIVE_BIT,1
        ;;
 (pKStk) st4 [r20]=r21
-       ssm psr.i               // enable interrupts
 #endif
+       ssm psr.i               // enable interrupts
        br.call.spnt.many rp=schedule
 .ret9: cmp.eq p6,p0=r0,r0                              // p6 <- 1
        rsm psr.i               // disable interrupts
@@ -1234,9 +1237,12 @@ GLOBAL_ENTRY(ia64_invoke_schedule_tail)
 END(ia64_invoke_schedule_tail)
 
        /*
-        * Setup stack and call do_notify_resume_user().  Note that pSys and pNonSys need to
-        * be set up by the caller.  We declare 8 input registers so the system call
-        * args get preserved, in case we need to restart a system call.
+        * Setup stack and call do_notify_resume_user(), keeping interrupts
+        * disabled.
+        *
+        * Note that pSys and pNonSys need to be set up by the caller.
+        * We declare 8 input registers so the system call args get preserved,
+        * in case we need to restart a system call.
         */
 ENTRY(notify_resume_user)
        .prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(8)