File libvirt-enable-atomic-completion.diff of Package libvirt
diff -uNrp libvirt-12.0.0.orig/src/conf/domain_conf.c libvirt-12.0.0/src/conf/domain_conf.c
--- libvirt-12.0.0.orig/src/conf/domain_conf.c 2026-02-23 10:32:59.719240309 +0000
+++ libvirt-12.0.0/src/conf/domain_conf.c 2026-02-27 09:19:07.941838058 +0000
@@ -9024,6 +9024,11 @@ virDomainControllerDefParseXML(virDomain
&def->opts.pciopts.hotplug) < 0)
return NULL;
+ if (virXMLPropTristateSwitch(targetNodes[0], "x-atomic-completion",
+ VIR_XML_PROP_NONE,
+ &def->opts.pciopts.atomicCompletion) < 0)
+ return NULL;
+
if (virXMLPropInt(targetNodes[0], "index", 0, VIR_XML_PROP_NONNEGATIVE,
&def->opts.pciopts.targetIndex,
def->opts.pciopts.targetIndex) < 0)
@@ -24326,6 +24331,11 @@ virDomainControllerDefFormatPCI(virBuffe
def->opts.pciopts.memReserve);
}
+ if (def->opts.pciopts.atomicCompletion != VIR_TRISTATE_SWITCH_ABSENT) {
+ virBufferAsprintf(&targetAttrBuf, " x-atomic-completion='%s'",
+ virTristateSwitchTypeToString(def->opts.pciopts.atomicCompletion));
+ }
+
if (def->opts.pciopts.numaNode != -1)
virBufferAsprintf(&targetChildBuf, "<node>%d</node>\n", def->opts.pciopts.numaNode);
diff -uNrp libvirt-12.0.0.orig/src/conf/domain_conf.h libvirt-12.0.0/src/conf/domain_conf.h
--- libvirt-12.0.0.orig/src/conf/domain_conf.h 2026-02-23 10:32:59.721304643 +0000
+++ libvirt-12.0.0/src/conf/domain_conf.h 2026-02-27 09:20:22.213729446 +0000
@@ -761,6 +761,7 @@ struct _virDomainPCIControllerOpts {
*/
int numaNode;
virTristateSwitch hotplug; /* 'off' to prevent hotplug/unplug, default 'on' */
+ virTristateSwitch atomicCompletion; /* x-atomic-completion for pcie-root-port */
unsigned long long memReserve; /* used by pci-bridge and pcie-root-port,
0 == undef, KiB */
diff -uNrp libvirt-12.0.0.orig/src/conf/schemas/domaincommon.rng libvirt-12.0.0/src/conf/schemas/domaincommon.rng
--- libvirt-12.0.0.orig/src/conf/schemas/domaincommon.rng 2026-02-23 10:32:59.761276956 +0000
+++ libvirt-12.0.0/src/conf/schemas/domaincommon.rng 2026-02-27 09:19:07.961838036 +0000
@@ -3023,6 +3023,11 @@
</attribute>
</optional>
<optional>
+ <attribute name="x-atomic-completion">
+ <ref name="virOnOff"/>
+ </attribute>
+ </optional>
+ <optional>
<element name="node">
<ref name="unsignedInt"/>
</element>
diff -uNrp libvirt-12.0.0.orig/src/qemu/qemu_capabilities.c libvirt-12.0.0/src/qemu/qemu_capabilities.c
--- libvirt-12.0.0.orig/src/qemu/qemu_capabilities.c 2026-02-23 10:33:00.118636986 +0000
+++ libvirt-12.0.0/src/qemu/qemu_capabilities.c 2026-02-27 09:19:07.989838006 +0000
@@ -579,6 +579,7 @@ VIR_ENUM_IMPL(virQEMUCaps,
"fsdev.multidevs", /* QEMU_CAPS_FSDEV_MULTIDEVS */
"virtio.packed", /* X_QEMU_CAPS_VIRTIO_PACKED_QUEUES */
"pcie-root-port.hotplug", /* QEMU_CAPS_PCIE_ROOT_PORT_HOTPLUG */
+ "pcie-root-port.x-atomic-completion", /* QEMU_CAPS_PCIE_ROOT_PORT_ATOMIC_COMPLETION */
"aio.io_uring", /* QEMU_CAPS_AIO_IO_URING */
"machine.pseries.cap-cfpc", /* X_QEMU_CAPS_MACHINE_PSERIES_CAP_CFPC */
@@ -1510,6 +1511,7 @@ static struct virQEMUCapsDevicePropsFlag
static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsPCIeRootPort[] = {
{ "hotplug", QEMU_CAPS_PCIE_ROOT_PORT_HOTPLUG, NULL },
+ { "x-atomic-completion", QEMU_CAPS_PCIE_ROOT_PORT_ATOMIC_COMPLETION, NULL },
};
static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsUSBHost[] = {
diff -uNrp libvirt-12.0.0.orig/src/qemu/qemu_capabilities.h libvirt-12.0.0/src/qemu/qemu_capabilities.h
--- libvirt-12.0.0.orig/src/qemu/qemu_capabilities.h 2026-02-23 10:33:00.119253856 +0000
+++ libvirt-12.0.0/src/qemu/qemu_capabilities.h 2026-02-27 09:19:07.965769366 +0000
@@ -554,6 +554,7 @@ typedef enum { /* virQEMUCapsFlags group
QEMU_CAPS_FSDEV_MULTIDEVS, /* fsdev.multidevs */
X_QEMU_CAPS_VIRTIO_PACKED_QUEUES, /* virtio.packed */
QEMU_CAPS_PCIE_ROOT_PORT_HOTPLUG, /* pcie-root-port.hotplug */
+ QEMU_CAPS_PCIE_ROOT_PORT_ATOMIC_COMPLETION, /* pcie-root-port.x-atomic-completion */
QEMU_CAPS_AIO_IO_URING, /* -blockdev {...,"aio":"io_uring",...} */
X_QEMU_CAPS_MACHINE_PSERIES_CAP_CFPC, /* -machine pseries.cap-cfpc */
diff -uNrp libvirt-12.0.0.orig/src/qemu/qemu_command.c libvirt-12.0.0/src/qemu/qemu_command.c
--- libvirt-12.0.0.orig/src/qemu/qemu_command.c 2026-02-23 10:33:00.125562863 +0000
+++ libvirt-12.0.0/src/qemu/qemu_command.c 2026-02-27 09:21:16.465648540 +0000
@@ -2797,6 +2797,7 @@ qemuBuildControllerPCIDevProps(virDomain
"i:chassis", pciopts->chassis,
"s:id", def->info.alias,
"T:hotplug", pciopts->hotplug,
+ "T:x-atomic-completion", pciopts->atomicCompletion,
"P:mem-reserve", pciopts->memReserve * 1024,
NULL) < 0)
return -1;
diff -uNrp libvirt-12.0.0.orig/src/qemu/qemu_validate.c libvirt-12.0.0/src/qemu/qemu_validate.c
--- libvirt-12.0.0.orig/src/qemu/qemu_validate.c 2026-02-23 10:33:00.188028449 +0000
+++ libvirt-12.0.0/src/qemu/qemu_validate.c 2026-02-27 09:46:42.009745551 +0000
@@ -4618,6 +4618,13 @@ qemuValidateDomainDeviceDefControllerPCI
"hotplug", modelName);
return -1;
}
+ if (pciopts->atomicCompletion != VIR_TRISTATE_SWITCH_ABSENT &&
+ !virQEMUCapsGet(qemuCaps, QEMU_CAPS_PCIE_ROOT_PORT_ATOMIC_COMPLETION)) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("setting the '%1$s' property on a '%2$s' device is not supported by this QEMU binary"),
+ "x-atomic-completion", modelName);
+ return -1;
+ }
break;
case VIR_DOMAIN_CONTROLLER_MODEL_PCI_BRIDGE:
