From: Akash Kulhalli via Devel <devel@lists.libvirt.org>
Date: Wed, 29 Apr 2026 12:13:26 +0000 (+0530)
Subject: qemu: emit vcpu-removed event on unplug completion
X-Git-Tag: v12.4.0-rc1~124
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=03d339dc03dbf63dbe73f7e8197508ed80617cc2;p=thirdparty%2Flibvirt.git

qemu: emit vcpu-removed event on unplug completion

Emit the vcpu-removed event when QEMU vCPU unplug completes.

Hook this into qemuDomainRemoveVcpu(), which covers both the
synchronous completion path and the DEVICE_DELETED-driven alias
removal path.

Some architectures may have multiple vcpus grouped under a single qemu
vcpu object; on those platforms a `vcpu-removed` event will be emitted
for each vcpu that is removed from this group.

Signed-off-by: Akash Kulhalli <akash.kulhalli@oracle.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
---

diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
index 71a64b0879..31086b4b89 100644
--- a/src/qemu/qemu_hotplug.c
+++ b/src/qemu/qemu_hotplug.c
@@ -6727,6 +6727,7 @@ qemuDomainRemoveVcpu(virDomainObj *vm,
     unsigned int nvcpus = vcpupriv->vcpus;
     size_t i;
     ssize_t offlineVcpuWithTid = -1;
+    virObjectEvent *event = NULL;
 
     if (qemuDomainRefreshVcpuInfo(vm, VIR_ASYNC_JOB_NONE, false) < 0)
         return -1;
@@ -6744,6 +6745,10 @@ qemuDomainRemoveVcpu(virDomainObj *vm,
             if (offlineVcpuWithTid == -1)
                 offlineVcpuWithTid = i;
         }
+
+        /* fire the `vcpu-removed` event for each removed vcpu */
+        event = virDomainEventVcpuRemovedNewFromObj(vm, i);
+        virObjectEventStateQueue(priv->driver->domainEventState, event);
     }
 
     if (offlineVcpuWithTid != -1) {