Index: src/lxc/lxc_container.c
===================================================================
--- src/lxc/lxc_container.c.orig
+++ src/lxc/lxc_container.c
@@ -883,6 +883,9 @@ int lxcContainerStart(virDomainDefPtr de
     lxc_child_argv_t args = { def, nveths, veths, control, ttyPath };
 
     /* allocate a stack for the container */
+#ifdef __ia64__
+    stacksize *= 2;
+#endif
     if (VIR_ALLOC_N(stack, stacksize) < 0) {
         virReportOOMError();
         return -1;
@@ -901,7 +904,11 @@ int lxcContainerStart(virDomainDefPtr de
         flags |= CLONE_NEWNET;
     }
 
+#ifdef __ia64__
+    pid = __clone2(lxcContainerChild, stack, stacksize, flags, &args);
+#else
     pid = clone(lxcContainerChild, stacktop, flags, &args);
+#endif
     VIR_FREE(stack);
     VIR_DEBUG("clone() completed, new container PID is %d", pid);
 
@@ -928,6 +935,7 @@ int lxcContainerAvailable(int features)
     char *childStack;
     char *stack;
     int childStatus;
+    int stacksize = getpagesize() * 4;
 
     if (features & LXC_CONTAINER_FEATURE_USER)
         flags |= CLONE_NEWUSER;
@@ -935,14 +943,21 @@ int lxcContainerAvailable(int features)
     if (features & LXC_CONTAINER_FEATURE_NET)
         flags |= CLONE_NEWNET;
 
-    if (VIR_ALLOC_N(stack, getpagesize() * 4) < 0) {
+#ifdef __ia64__
+    stacksize *= 2;
+#endif
+    if (VIR_ALLOC_N(stack, stacksize) < 0) {
         VIR_DEBUG0("Unable to allocate stack");
         return -1;
     }
 
-    childStack = stack + (getpagesize() * 4);
+    childStack = stack + stacksize;
 
+#ifdef __ia64__
+    cpid = __clone2(lxcContainerDummyChild, stack, stacksize, flags, NULL);
+#else
     cpid = clone(lxcContainerDummyChild, childStack, flags, NULL);
+#endif
     VIR_FREE(stack);
     if (cpid < 0) {
         char ebuf[1024];