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D33448.diff

diff --git a/sys/amd64/vmm/io/vlapic.c b/sys/amd64/vmm/io/vlapic.c
--- a/sys/amd64/vmm/io/vlapic.c
+++ b/sys/amd64/vmm/io/vlapic.c
@@ -1740,10 +1740,13 @@
SNAPSHOT_VAR_OR_LEAVE(ccr, meta, ret, done);
- if (meta->op == VM_SNAPSHOT_RESTORE) {
+ if (meta->op == VM_SNAPSHOT_RESTORE &&
+ vlapic_enabled(vlapic) && lapic->icr_timer != 0) {
/* Reset the value of the 'timer_fire_bt' and the vlapic
* callout based on the value of the current count
- * register saved when the VM snapshot was created
+ * register saved when the VM snapshot was created.
+ * If initial count register is 0, timer is not used.
+ * Look at "10.5.4 APIC Timer" in Software Developer Manual.
*/
vlapic_reset_callout(vlapic, ccr);
}

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