qemu: capabilities: Introduce QEMU_CAPS_VIRTIO_BLK_IOTHREAD_MAPPING

The capability represents the support for mapping virtqueues to
iothreads for the 'virtio-blk' device.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>

src/qemu/qemu_capabilities.c

@@ -698,6 +698,7 @@ VIR_ENUM_IMPL(virQEMUCaps,
               /* 450 */
               "run-with.async-teardown", /* QEMU_CAPS_RUN_WITH_ASYNC_TEARDOWN */
               "virtio-blk-vhost-vdpa", /* QEMU_CAPS_DEVICE_VIRTIO_BLK_VHOST_VDPA */
+              "virtio-blk.iothread-mapping", /* QEMU_CAPS_VIRTIO_BLK_IOTHREAD_MAPPING */
     );
 
 
@@ -1422,6 +1423,7 @@ static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsVirtioBlk[] = {
     { "scsi", QEMU_CAPS_VIRTIO_BLK_SCSI, virQEMUCapsDevicePropsVirtioBlkSCSIDefault },
     { "queue-size", QEMU_CAPS_VIRTIO_BLK_QUEUE_SIZE, NULL },
     { "acpi-index", QEMU_CAPS_ACPI_INDEX, NULL },
+    { "iothread-vq-mapping", QEMU_CAPS_VIRTIO_BLK_IOTHREAD_MAPPING, NULL },
 };
 
 static struct virQEMUCapsDevicePropsFlags virQEMUCapsDevicePropsVirtioNet[] = {

src/qemu/qemu_capabilities.h

@@ -677,6 +677,7 @@ typedef enum { /* virQEMUCapsFlags grouping marker for syntax-check */
     /* 450 */
     QEMU_CAPS_RUN_WITH_ASYNC_TEARDOWN, /* asynchronous teardown -run-with async-teardown=on|off */
     QEMU_CAPS_DEVICE_VIRTIO_BLK_VHOST_VDPA, /* virtio-blk-vhost-vdpa block driver */
+    QEMU_CAPS_VIRTIO_BLK_IOTHREAD_MAPPING, /* virtio-blk supports per-virtqueue iothread mapping */
 
     QEMU_CAPS_LAST /* this must always be the last item */
 } virQEMUCapsFlags;

tests/qemucapabilitiesdata/caps_9.0.0_x86_64.xml

@@ -199,6 +199,7 @@
   <flag name='qcow2-discard-no-unref'/>
   <flag name='run-with.async-teardown'/>
   <flag name='virtio-blk-vhost-vdpa'/>
+  <flag name='virtio-blk.iothread-mapping'/>
   <version>8002050</version>
   <microcodeVersion>43100245</microcodeVersion>
   <package>v8.2.0-196-g7425b6277f</package>