[Xen-changelog] Fix incorrect re-enablement of interrupts (found by Tristan Gingold)

[Xen patchbot -unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User djm@xxxxxxxxxxxxxxx
# Node ID f81e637e7741424448108ab242e6fd472e583641
# Parent  98fb7e03a886148f687f84ce0e475f98be1e7ffc
Fix incorrect re-enablement of interrupts (found by Tristan Gingold)

diff -r 98fb7e03a886 -r f81e637e7741 xen/arch/ia64/xen/vcpu.c
--- a/xen/arch/ia64/xen/vcpu.c  Mon Oct  3 22:27:27 2005
+++ b/xen/arch/ia64/xen/vcpu.c  Fri Oct  7 15:37:41 2005
@@ -1043,9 +1043,10 @@
 void vcpu_safe_set_itm(unsigned long val)
 {
        unsigned long epsilon = 100;
+       unsigned long flags;
        UINT64 now = ia64_get_itc();
 
-       local_irq_disable();
+       local_irq_save(flags);
        while (1) {
 //printf("*** vcpu_safe_set_itm: Setting itm to %lx, itc=%lx\n",val,now);
                ia64_set_itm(val);
@@ -1053,7 +1054,7 @@
                val = now + epsilon;
                epsilon <<= 1;
        }
-       local_irq_enable();
+       local_irq_restore(flags);
 }
 
 void vcpu_set_next_timer(VCPU *vcpu)

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