Add test coverage for machine-specific PCI features:
- Add XML tests for aarch64 virt highmem-mmio-size
- Add command line generation tests

This ensures proper handling of machine-specific PCI features
like the high memory MMIO window size configuration.

Signed-off-by: Matthew R. Ochs <mochs@nvidia.com>
---
 ...rch64-virt-machine-pci.aarch64-latest.args | 31 +++++++++++++++++++
 ...arch64-virt-machine-pci.aarch64-latest.xml | 30 ++++++++++++++++++
 .../aarch64-virt-machine-pci.xml              | 20 ++++++++++++
 tests/qemuxmlconftest.c                       |  2 ++
 4 files changed, 83 insertions(+)
 create mode 100644 tests/qemuxmlconfdata/aarch64-virt-machine-pci.aarch64-latest.args
 create mode 100644 tests/qemuxmlconfdata/aarch64-virt-machine-pci.aarch64-latest.xml
 create mode 100644 tests/qemuxmlconfdata/aarch64-virt-machine-pci.xml

diff --git a/tests/qemuxmlconfdata/aarch64-virt-machine-pci.aarch64-latest.args b/tests/qemuxmlconfdata/aarch64-virt-machine-pci.aarch64-latest.args
new file mode 100644
index 000000000000..7ab4e8bd624f
--- /dev/null
+++ b/tests/qemuxmlconfdata/aarch64-virt-machine-pci.aarch64-latest.args
@@ -0,0 +1,31 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/var/lib/libvirt/qemu/domain--1-aarch64-virt-machine \
+USER=test \
+LOGNAME=test \
+XDG_DATA_HOME=/var/lib/libvirt/qemu/domain--1-aarch64-virt-machine/.local/share \
+XDG_CACHE_HOME=/var/lib/libvirt/qemu/domain--1-aarch64-virt-machine/.cache \
+XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-aarch64-virt-machine/.config \
+/usr/bin/qemu-system-aarch64 \
+-name guest=aarch64-virt-machine-pci,debug-threads=on \
+-S \
+-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain--1-aarch64-virt-machine/master-key.aes"}' \
+-machine virt,usb=off,gic-version=2,highmem-mmio-size=512G,dump-guest-core=off,memory-backend=mach-virt.ram,acpi=off \
+-accel tcg \
+-cpu cortex-a15 \
+-m size=1048576k \
+-object '{"qom-type":"memory-backend-ram","id":"mach-virt.ram","size":1073741824}' \
+-overcommit mem-lock=off \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid 6ba7b810-9dad-11d1-80b4-00c04fd430c8 \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,fd=1729,server=on,wait=off \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-boot strict=on \
+-audiodev '{"id":"audio1","driver":"none"}' \
+-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
+-msg timestamp=on
diff --git a/tests/qemuxmlconfdata/aarch64-virt-machine-pci.aarch64-latest.xml b/tests/qemuxmlconfdata/aarch64-virt-machine-pci.aarch64-latest.xml
new file mode 100644
index 000000000000..d19a23b17b70
--- /dev/null
+++ b/tests/qemuxmlconfdata/aarch64-virt-machine-pci.aarch64-latest.xml
@@ -0,0 +1,30 @@
+<domain type='qemu'>
+  <name>aarch64-virt-machine-pci</name>
+  <uuid>6ba7b810-9dad-11d1-80b4-00c04fd430c8</uuid>
+  <memory unit='KiB'>1048576</memory>
+  <currentMemory unit='KiB'>1048576</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='aarch64' machine='virt'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <features>
+    <gic version='2'/>
+    <pci>
+      <highmem-mmio-size unit='G'>512</highmem-mmio-size>
+    </pci>
+  </features>
+  <cpu mode='custom' match='exact' check='none'>
+    <model fallback='forbid'>cortex-a15</model>
+  </cpu>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-aarch64</emulator>
+    <controller type='pci' index='0' model='pcie-root'/>
+    <audio id='1' type='none'/>
+    <memballoon model='none'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxmlconfdata/aarch64-virt-machine-pci.xml b/tests/qemuxmlconfdata/aarch64-virt-machine-pci.xml
new file mode 100644
index 000000000000..42ebb4b304b5
--- /dev/null
+++ b/tests/qemuxmlconfdata/aarch64-virt-machine-pci.xml
@@ -0,0 +1,20 @@
+<domain type='qemu'>
+  <name>aarch64-virt-machine-pci</name>
+  <uuid>6ba7b810-9dad-11d1-80b4-00c04fd430c8</uuid>
+  <memory unit='KiB'>1048576</memory>
+  <currentMemory unit='KiB'>1048576</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='aarch64' machine='virt'>hvm</type>
+  </os>
+  <features>
+    <pci>
+      <highmem-mmio-size unit='G'>512</highmem-mmio-size>
+    </pci>
+  </features>
+  <devices>
+    <emulator>/usr/bin/qemu-system-aarch64</emulator>
+    <controller type='pci' index='0' model='pcie-root'/>
+    <memballoon model='none'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxmlconftest.c b/tests/qemuxmlconftest.c
index 1279b08c9627..5f1f6a7bb3c5 100644
--- a/tests/qemuxmlconftest.c
+++ b/tests/qemuxmlconftest.c
@@ -2665,6 +2665,8 @@ mymain(void)
 
     DO_TEST_CAPS_ARCH_LATEST("clock-timer-armvtimer", "aarch64");
 
+    DO_TEST_CAPS_ARCH_LATEST("aarch64-virt-machine-pci", "aarch64");
+
     qemuTestSetHostArch(&driver, VIR_ARCH_NONE);
 
     DO_TEST_CAPS_LATEST("kvm-pit-delay");
-- 
2.46.0