cli: --cpu: Add maxphysaddr.{mode,bits} options

This commit added support for cpu physical address bits control, It's
useful for VMs with huge amount of ram.

E.g.
--cpu Cascadelake-Server,maxphysaddr.mode=emulate,maxphysaddr.bits=46

Signed-off-by: Lin Ma <lma@suse.com>

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

@@ -194,6 +194,7 @@
         <bandwidth initiator="0" target="2" cache="1" type="access" value="409600" unit="KiB"/>
       </interconnects>
     </numa>
+    <maxphysaddr mode="emulate" bits="46"/>
   </cpu>
   <clock offset="utc">
     <timer name="pit" tickpolicy="catchup" present="yes"/>

tests/data/cli/compare/virt-install-testdriver-edgecases.xml

@@ -17,7 +17,9 @@
     <pae/>
     <vmport state="off"/>
   </features>
-  <cpu mode="host-passthrough" migratable="on"/>
+  <cpu mode="host-passthrough" migratable="on">
+    <maxphysaddr mode="passthrough"/>
+  </cpu>
   <clock offset="utc"/>
   <pm>
     <suspend-to-mem enabled="no"/>

tests/test_cli.py

@@ -511,7 +511,8 @@ numa.interconnects.latency0.initiator=0,numa.interconnects.latency0.target=0,num
 numa.interconnects.latency1.initiator=0,numa.interconnects.latency1.target=2,numa.interconnects.latency1.cache=1,numa.interconnects.latency1.type=access,numa.interconnects.latency1.value=10,numa.interconnects.latency1.unit=ns,\
 numa.interconnects.bandwidth0.initiator=0,numa.interconnects.bandwidth0.target=0,numa.interconnects.bandwidth0.type=access,numa.interconnects.bandwidth0.value=204800,\
 numa.interconnects.bandwidth1.initiator=0,numa.interconnects.bandwidth1.target=2,numa.interconnects.bandwidth1.cache=1,numa.interconnects.bandwidth1.type=access,numa.interconnects.bandwidth1.value=409600,numa.interconnects.bandwidth1.unit=KiB,\
-cache.mode=emulate,cache.level=3
+cache.mode=emulate,cache.level=3,\
+maxphysaddr.mode=emulate,maxphysaddr.bits=46
 
 
 --numatune 1,2,3,5-7,^6,mode=strict,\
@@ -880,7 +881,7 @@ c.add_compare("--pxe "
 
 # Hitting test driver specific output
 c.add_compare("--connect " + utils.URIs.test_suite + " "
-"--cpu host-passthrough,migratable=on "  # migratable=on is only accepted with host-passthrough
+"--cpu host-passthrough,migratable=on,maxphysaddr.mode=passthrough "  # migratable=on is only accepted with host-passthrough
 "--seclabel label=foobar.label,a1,z2,b3,relabel=yes,type=dynamic "  # fills in default model=testModel
 "--tpm default "  # --tpm default when domcaps missing
 "",

virtinst/cli.py

@@ -2386,6 +2386,9 @@ class ParserCPU(VirtCLIParser):
         cls.add_arg("cache.level", "cache.level")
         cls.add_arg("cache.mode", "cache.mode")
 
+        cls.add_arg("maxphysaddr.mode", "maxphysaddr.mode")
+        cls.add_arg("maxphysaddr.bits", "maxphysaddr.bits")
+
         # CPU features
         # These are handled specially in _parse
         cls.add_arg("force", None, lookup_cb=None, cb=cls.set_feature_cb)

virtinst/domain/cpu.py

@@ -102,6 +102,17 @@ class _CPUFeature(XMLBuilder):
     policy = XMLProperty("./@policy")
 
 
+class _CPUMaxphysaddr(XMLBuilder):
+    """
+    Class for generating XML for <cpu> child node <maxphysaddr>.
+    """
+    XML_NAME = "maxphysaddr"
+    _XML_PROP_ORDER = ["mode", "bits"]
+
+    mode = XMLProperty("./@mode")
+    bits = XMLProperty("./@bits", is_int=True)
+
+
 ##############
 # NUMA cells #
 ##############
@@ -211,7 +222,7 @@ class DomainCpu(XMLBuilder):
     _XML_PROP_ORDER = ["mode", "match", "check", "migratable",
             "model", "model_fallback", "model_vendor_id", "vendor",
             "topology", "cache", "features",
-            "cells", "latencies", "bandwidths"]
+            "cells", "latencies", "bandwidths", "maxphysaddr"]
 
 
     ##################
@@ -242,6 +253,8 @@ class DomainCpu(XMLBuilder):
     latencies = XMLChildProperty(_NUMALatency, relative_xpath="./numa/interconnects")
     bandwidths = XMLChildProperty(_NUMABandwidth, relative_xpath="./numa/interconnects")
 
+    maxphysaddr = XMLChildProperty(_CPUMaxphysaddr, is_single=True)
+
 
     #############################
     # Special CPU mode handling #