diff --git a/tools/ioemu/iodev/main.cc b/tools/ioemu/iodev/main.cc
index 763b8b2f7b..c784adb555 100644
--- a/tools/ioemu/iodev/main.cc
+++ b/tools/ioemu/iodev/main.cc
@@ -1781,6 +1781,7 @@ int bxmain () {
 // wxWindows under win32.
 int main (int argc, char *argv[])
 {
+  daemon(0, 0);
   bx_startup_flags.argc = argc;
   bx_startup_flags.argv = argv;
 #if BX_WITH_SDL && defined(WIN32)
diff --git a/tools/ioemu/memory/misc_mem.cc b/tools/ioemu/memory/misc_mem.cc
index a69591dc1d..5d2b678531 100644
--- a/tools/ioemu/memory/misc_mem.cc
+++ b/tools/ioemu/memory/misc_mem.cc
@@ -189,9 +189,6 @@ BX_MEM_C::init_memory(int memsize)
     shared_page = xc_map_foreign_range(xc_handle, domid, PAGE_SIZE, 
                                        PROT_READ|PROT_WRITE, 
                                        page_array[nr_pages - 1]);
-
-    /* Initialize shared page */
-    memset(shared_page, 0, PAGE_SIZE);
 }
 #endif // #if BX_PROVIDE_CPU_MEMORY
 
diff --git a/tools/python/xen/xend/XendDomainInfo.py b/tools/python/xen/xend/XendDomainInfo.py
index 00fb2de04f..b2a8e6caea 100644
--- a/tools/python/xen/xend/XendDomainInfo.py
+++ b/tools/python/xen/xend/XendDomainInfo.py
@@ -855,7 +855,7 @@ class XendDomainInfo:
                       + " -f %s" % device_config
                       + " -d %d" % self.dom
                       + " -p %d" % device_channel['port1']
-                      + " -m %s &" % memory)
+                      + " -m %s" % memory)
         return deferred
 
     def device_create(self, dev_config):
diff --git a/xen/arch/x86/vmx_vmcs.c b/xen/arch/x86/vmx_vmcs.c
index c75620035f..1d5411bbfa 100644
--- a/xen/arch/x86/vmx_vmcs.c
+++ b/xen/arch/x86/vmx_vmcs.c
@@ -142,6 +142,10 @@ int vmx_setup_platform(struct exec_domain *d, execution_context_t *context)
     mpfn = phys_to_machine_mapping(gpfn);
     p = map_domain_mem(mpfn << PAGE_SHIFT);
     ASSERT(p != NULL);
+
+    /* Initialise shared page */
+    memset(p, 0, PAGE_SIZE);
+
     d->arch.arch_vmx.vmx_platform.shared_page_va = (unsigned long) p;
 
     return 0;