add support for linux stubdoms

(cherry picked from commit e14ac1500a05162b3c07a5f44b4f0223f43fe90c)

qubes/vm/qubesvm.py

@@ -409,6 +409,11 @@ class QubesVM(qubes.vm.mix.net.NetVMMixin, qubes.vm.BaseVM):
         doc='''Maximum amount of memory available for this VM (for the purpose
             of the memory balancer).''')
 
+    stubdom_mem = qubes.property('stubdom_mem', type=int,
+        setter=_setter_positive_int,
+        default=None,
+        doc='Memory ammount allocated for the stubdom')
+
     internal = qubes.property('internal', default=False,
         type=bool, setter=qubes.property.bool,
         doc='''Internal VM (not shown in qubes-manager, don't create appmenus
@@ -1136,7 +1141,19 @@ class QubesVM(qubes.vm.mix.net.NetVMMixin, qubes.vm.BaseVM):
             return
 
         if mem_required is None:
-            mem_required = int(self.memory) * 1024 * 1024
+            if self.hvm:
+                if self.stubdom_mem:
+                    stubdom_mem = self.stubdom_mem
+                else:
+                    if self.features.get('linux-stubdom', False):
+                        stubdom_mem = 128 # from libxl_create.c
+                    else:
+                        stubdom_mem = 28 # from libxl_create.c
+                stubdom_mem += 16 # video ram
+            else:
+                stubdom_mem = 0
+
+            mem_required = int(self.memory + stubdom_mem) * 1024 * 1024
 
         qmemman_client = qubes.qmemman.client.QMemmanClient()
         try:

templates/libvirt/xen.xml

@@ -112,17 +112,32 @@
 
             {% if vm.hvm %}
                 <emulator
-                    type="stubdom"
+                    {% if vm.features.get('linux-stubdom', False) %}
-                    {% if vm.netvm %}
+                        type="stubdom-linux"
+                    {% else %}
+                        type="stubdom"
+                    {% endif %}
+                    {% if vm.netvm and not vm.features.get('linux-stubdom', False) %}
                         cmdline="-net lwip,client_ip={{ vm.ip -}}
                             ,server_ip={{ vm.dns[1] -}}
                             ,dns={{ vm.netvm.gateway -}}
                             ,gw={{ vm.netvm.gateway -}}
                             ,netmask={{ vm.netmask }}"
                     {% endif %}
+                    {% if vm.stubdom_mem %}
+                        memory="{{ vm.stubdom_mem * 1024 -}}"
+                    {% endif %}
                     />
                 <input type="tablet" bus="usb"/>
-                <video type="vga"/>
+                {% if vm.features.get('linux-stubdom', False) %}
+                    <video type="cirrus"/>
+                {% else %}
+                    <video type="vga"/>
+                {% endif %}
+                {% if vm.features.get('linux-stubdom', False) %}
+                    {# TODO only add qubes gui if gui-agent is not installed in HVM #}
+                    <graphics type="qubes"/>
+                {% endif %}
             {% else %}
                 <console type="pty">
                     <target type="xen" port="0"/>