cli: Add --features kvm.pv-ipi.state=on|off

Set kvm pv-ipi feature by --features argument.

E.g. virt-install --features kvm.pv-ipi.state=off
It results in the following domain xml:

 <features>
   <kvm>
     <pv-ipi state='off'/>
   </kvm>
 </features>

Reviewed-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Lin Ma <lma@suse.de>

tests/data/cli/compare/virt-install-many-devices.xml

@@ -156,6 +156,7 @@
       <hidden state="off"/>
       <hint-dedicated state="on"/>
       <poll-control state="on"/>
+      <pv-ipi state="on"/>
     </kvm>
     <pvspinlock state="off"/>
     <smm state="off"/>

tests/data/xmlparse/change-guest-out.xml

@@ -30,6 +30,7 @@
     <vmcoreinfo state="on"/>
     <kvm>
       <hidden state="on"/>
+      <pv-ipi state="off"/>
     </kvm>
     <pvspinlock state="on"/>
     <ioapic driver="qemu"/>

tests/test_cli.py

@@ -579,7 +579,8 @@ hyperv.reenlightenment.state=on,\
 hyperv.tlbflush.state=on,\
 hyperv.ipi.state=on,\
 hyperv.evmcs.state=on,\
-hyperv.avic.state=on
+hyperv.avic.state=on,\
+kvm.pv-ipi.state=on
 
 
 --clock offset=utc,hpet_present=no,rtc_tickpolicy=merge,timer2.name=hypervclock,timer3.name=pit,timer1.present=yes,timer3.tickpolicy=delay,timer2.present=no,timer4.name=rtc,timer5.name=tsc,timer6.name=tsc,timer4.track=wall,timer5.frequency=10,timer6.mode=emulate,timer7.name=rtc,timer7.tickpolicy=catchup,timer7.catchup.threshold=123,timer7.catchup.slew=120,timer7.catchup.limit=10000,rtc_present=no,pit_present=yes,pit_tickpolicy=catchup,tsc_present=no,platform_present=no,hypervclock_present=no,platform_tickpolicy=foo,hpet_tickpolicy=bar,tsc_tickpolicy=wibble,kvmclock_tickpolicy=wobble,hypervclock_tickpolicy=woo

tests/test_xmlparse.py

@@ -163,6 +163,7 @@ def testAlterGuest():
     check("pvspinlock", None, True)
     check("gic_version", None, False)
     check("ioapic_driver", None, "qemu")
+    check("kvm_pv_ipi", None, False)
 
     check = _make_checker(guest.cpu)
     check("match", "exact", "strict")

virtinst/cli.py

@@ -3027,6 +3027,7 @@ class ParserFeatures(VirtCLIParser):
         cls.add_arg("kvm.hidden.state", "kvm_hidden", is_onoff=True)
         cls.add_arg("kvm.hint-dedicated.state", "kvm_hint_dedicated", is_onoff=True)
         cls.add_arg("kvm.poll-control.state", "kvm_poll_control", is_onoff=True)
+        cls.add_arg("kvm.pv-ipi.state", "kvm_pv_ipi", is_onoff=True)
         cls.add_arg("pvspinlock.state", "pvspinlock", is_onoff=True)
 
         cls.add_arg("gic.version", "gic_version")

virtinst/domain/features.py

@@ -48,6 +48,7 @@ class DomainFeatures(XMLBuilder):
     kvm_hidden = XMLProperty("./kvm/hidden/@state", is_onoff=True)
     kvm_hint_dedicated = XMLProperty("./kvm/hint-dedicated/@state", is_onoff=True)
     kvm_poll_control = XMLProperty("./kvm/poll-control/@state", is_onoff=True)
+    kvm_pv_ipi = XMLProperty("./kvm/pv-ipi/@state", is_onoff=True)
     pvspinlock = XMLProperty("./pvspinlock/@state", is_onoff=True)
 
     smm = XMLProperty("./smm/@state", is_onoff=True)