qemu: Introduce QEMU_CAPS_IOTHREAD_THREAD_POOL_MAX

This capability reflects whether QEMU allows setting
thread-pool-min and thread-pool-max attributes on iothread
object. Since both attributes were introduced in the same commit
(v7.0.0-878-g71ad4713cc) and can't exist independently of each
other we can stick with one capability covering both of them.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>

src/qemu/qemu_capabilities.c

@@ -676,6 +676,7 @@ VIR_ENUM_IMPL(virQEMUCaps,
               /* 430 */
               "chardev.qemu-vdagent", /* QEMU_CAPS_CHARDEV_QEMU_VDAGENT */
               "display-dbus", /* QEMU_CAPS_DISPLAY_DBUS */
+              "iothread.thread-pool-max", /* QEMU_CAPS_IOTHREAD_THREAD_POOL_MAX */
     );
 
 
@@ -1627,6 +1628,7 @@ static struct virQEMUCapsStringFlags virQEMUCapsQMPSchemaQueries[] = {
     { "calc-dirty-rate/arg-type/mode", QEMU_CAPS_DIRTYRATE_MODE },
     { "chardev-add/arg-type/backend/+qemu-vdagent", QEMU_CAPS_CHARDEV_QEMU_VDAGENT },
     { "query-display-options/ret-type/+dbus", QEMU_CAPS_DISPLAY_DBUS },
+    { "object-add/arg-type/+iothread/thread-pool-max", QEMU_CAPS_IOTHREAD_THREAD_POOL_MAX },
 };
 
 typedef struct _virQEMUCapsObjectTypeProps virQEMUCapsObjectTypeProps;

src/qemu/qemu_capabilities.h

@@ -651,6 +651,7 @@ typedef enum { /* virQEMUCapsFlags grouping marker for syntax-check */
     /* 430 */
     QEMU_CAPS_CHARDEV_QEMU_VDAGENT, /* -chardev qemu-vdagent */
     QEMU_CAPS_DISPLAY_DBUS, /* -display dbus */
+    QEMU_CAPS_IOTHREAD_THREAD_POOL_MAX, /* -object iothread.thread-pool-max */
 
     QEMU_CAPS_LAST /* this must always be the last item */
 } virQEMUCapsFlags;

tests/qemucapabilitiesdata/caps_7.1.0.x86_64.xml

@@ -243,6 +243,7 @@
   <flag name='virtio-net.rss'/>
   <flag name='chardev.qemu-vdagent'/>
   <flag name='display-dbus'/>
+  <flag name='iothread.thread-pool-max'/>
   <version>7000050</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>43100244</microcodeVersion>