Use -M virt as default machine for arm/aarch64

Centralize the default machine logic in caps and use it consistently

tests/cli-test-xml/compare/virt-install-aarch64-machdefault.xml

@@ -5,7 +5,7 @@
   <currentMemory>65536</currentMemory>
   <vcpu>1</vcpu>
   <os>
-    <type arch="aarch64">hvm</type>
+    <type arch="aarch64" machine="virt">hvm</type>
     <kernel>/f19-arm.kernel</kernel>
     <initrd>/f19-arm.initrd</initrd>
     <cmdline>console=ttyAMA0,1234 rw root=/dev/vda3</cmdline>
@@ -24,11 +24,12 @@
     <disk type="file" device="disk">
       <driver name="qemu" type="qcow2"/>
       <source file="/dev/default-pool/testvol1.img"/>
-      <target dev="sda" bus="sd"/>
+      <target dev="vda" bus="virtio"/>
     </disk>
     <interface type="bridge">
       <source bridge="eth0"/>
       <mac address="00:11:22:33:44:55"/>
+      <model type="virtio"/>
     </interface>
     <console type="pty"/>
   </devices>

tests/cli-test-xml/compare/virt-install-arm-defaultmach-f20.xml

@@ -5,7 +5,7 @@
   <currentMemory>65536</currentMemory>
   <vcpu>1</vcpu>
   <os>
-    <type arch="armv7l">hvm</type>
+    <type arch="armv7l" machine="virt">hvm</type>
     <kernel>/f19-arm.kernel</kernel>
     <initrd>/f19-arm.initrd</initrd>
     <cmdline>console=ttyAMA0,1234 rw root=/dev/vda3</cmdline>
@@ -24,11 +24,12 @@
     <disk type="file" device="disk">
       <driver name="qemu" type="qcow2"/>
       <source file="/dev/default-pool/testvol1.img"/>
-      <target dev="sda" bus="sd"/>
+      <target dev="vda" bus="virtio"/>
     </disk>
     <interface type="bridge">
       <source bridge="eth0"/>
       <mac address="00:11:22:33:44:55"/>
+      <model type="virtio"/>
     </interface>
     <console type="pty"/>
   </devices>

tests/cli-test-xml/compare/virt-install-ppc64-machdefault-f20.xml

@@ -0,0 +1,42 @@
+<domain type="qemu">
+  <name>foobar</name>
+  <uuid>00000000-1111-2222-3333-444444444444</uuid>
+  <memory>65536</memory>
+  <currentMemory>65536</currentMemory>
+  <vcpu>1</vcpu>
+  <os>
+    <type arch="ppc64" machine="pseries">hvm</type>
+    <boot dev="network"/>
+  </os>
+  <features>
+    <acpi/>
+    <apic/>
+    <pae/>
+  </features>
+  <clock offset="utc"/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>restart</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-ppc64</emulator>
+    <disk type="file" device="disk">
+      <driver name="qemu" type="qcow2"/>
+      <source file="/dev/default-pool/testvol1.img"/>
+      <target dev="sda" bus="scsi"/>
+    </disk>
+    <graphics type="spice" port="-1" tlsPort="-1" autoport="yes"/>
+    <console type="pty"/>
+    <channel type="unix">
+      <source mode="bind"/>
+      <target type="virtio" name="org.qemu.guest_agent.0"/>
+    </channel>
+    <channel type="spicevmc">
+      <target type="virtio" name="com.redhat.spice.0"/>
+    </channel>
+    <video>
+      <model type="vga"/>
+    </video>
+    <redirdev bus="usb" type="spicevmc"/>
+    <redirdev bus="usb" type="spicevmc"/>
+  </devices>
+</domain>

tests/clitest.py

@@ -526,6 +526,7 @@ c.add_compare("--arch armv7l --boot kernel=/f19-arm.kernel,initrd=/f19-arm.initr
 c.add_compare("--arch aarch64 --machine virt --boot kernel=/f19-arm.kernel,initrd=/f19-arm.initrd,kernel_args=\"console=ttyAMA0,1234 rw root=/dev/vda3\",extra_args=foo --disk %(EXISTIMG1)s", "aarch64-machvirt")
 c.add_compare("--arch aarch64 --boot kernel=/f19-arm.kernel,initrd=/f19-arm.initrd,kernel_args=\"console=ttyAMA0,1234 rw root=/dev/vda3\",extra_args=foo --disk %(EXISTIMG1)s", "aarch64-machdefault")
 c.add_compare("--arch ppc64 --machine pseries --boot network --disk %(EXISTIMG1)s --os-variant fedora20 --network none", "ppc64-pseries-f20")
+c.add_compare("--arch ppc64 --boot network --disk %(EXISTIMG1)s --os-variant fedora20 --network none", "ppc64-machdefault-f20")
 c.add_compare("--disk none --location /tmp/fake.iso --nonetworks", "location-iso")  # Using --location iso mounting
 c.add_compare("--disk %(EXISTIMG1)s --pxe --os-variant rhel6.4", "kvm-rhel6")  # RHEL6 defaults
 c.add_compare("--disk %(EXISTIMG1)s --pxe --os-variant rhel7.0", "kvm-rhel7")  # RHEL7 defaults

virt-install

@@ -360,7 +360,6 @@ def get_guest(conn, options):
                         typ=req_hv_type,
                         machine=options.machine)
         guest = conn.caps.build_virtinst_guest(conn, capsguest, capsdomain)
-        guest.os.machine = options.machine
     except Exception, e:
         fail(e)
 

virtManager/create.py

@@ -717,12 +717,11 @@ class vmmCreate(vmmGObjectUI):
 
         defmachine = None
         prios = []
-        if self.capsguest.arch == "armv7l":
-            defmachine = "vexpress-a9"
-            prios = ["vexpress-a9", "vexpress-a15", "highbank", "midway"]
-        elif self.capsguest.arch == "ppc64":
-            defmachine = "pseries"
-            prios = ["pseries"]
+        recommended_machine = self.capsdomain.get_recommended_machine(
+            self.conn.get_backend(), self.capsguest)
+        if recommended_machine:
+            defmachine = recommended_machine
+            prios = [defmachine]
 
         for p in prios[:]:
             if p not in machines:

virtinst/capabilities.py

@@ -360,10 +360,15 @@ class Guest(object):
     def bestDomainType(self, dtype=None, machine=None):
         domains = []
         for d in self.domains:
+            d.set_recommended_machine(None)
+
             if dtype and d.hypervisor_type != dtype.lower():
                 continue
             if machine and machine not in d.machines:
                 continue
+
+            if machine:
+                d.set_recommended_machine(machine)
             domains.append(d)
 
         return self._favoredDomain(domains)
@@ -378,9 +383,30 @@ class Domain(object):
         self.loader = loader
         self.machines = machines
 
+        self._recommended_machine = None
+
         if node is not None:
             self.parseXML(node)
 
+    def get_recommended_machine(self, conn, capsguest):
+        if self._recommended_machine:
+            return self._recommended_machine
+
+        if not conn.is_test() and not conn.is_qemu():
+            return None
+
+        if capsguest.arch == "ppc64" and "pseries" in self.machines:
+            return "pseries"
+        if capsguest.arch in ["armv7l", "aarch64"]:
+            if "virt" in self.machines:
+                return "virt"
+            if "vexpress-a15" in self.machines:
+                return "vexpress-a15"
+
+        return None
+
+    def set_recommended_machine(self, machine):
+        self._recommended_machine = machine
 
     def parseXML(self, node):
         child = node.children
@@ -695,5 +721,6 @@ class Capabilities(object):
         gobj.os.arch = guest.arch
         gobj.os.loader = domain.loader
         gobj.emulator = domain.emulator
+        gobj.os.machine = domain.get_recommended_machine(conn, guest)
 
         return gobj

virtinst/guest.py

@@ -686,9 +686,6 @@ class Guest(XMLBuilder):
         if self.os.kernel or self.os.init:
             self.os.bootorder = []
 
-        if (self.os.machine is None and self.os.is_ppc64()):
-            self.os.machine = "pseries"
-
     def _set_clock_defaults(self):
         if not self.os.is_hvm():
             return