qemu: Forbid pinning vCPUs for TCG domain

We don't support cpu pinning for TCG domains because QEMU runs them in
one thread only.  But vcpupin command was able to set them, which
resulted in a failed startup, so make sure that doesn't happen.

Signed-off-by: Chen Hanxiao <chenhanxiao@gmail.com>

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 3f57a9fee0b9d38cb653fec55013844831882f12..817c567836d83924f2621e085a4b7f046c361651 100644 (file)
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -5189,6 +5189,13 @@ qemuDomainPinVcpuFlags(virDomainPtr dom,
     if (virDomainObjGetDefs(vm, flags, &def, &persistentDef) < 0)
         goto endjob;
 
+    if ((def && def->virtType == VIR_DOMAIN_VIRT_QEMU) ||
+        (persistentDef && persistentDef->virtType == VIR_DOMAIN_VIRT_QEMU)) {
+        virReportError(VIR_ERR_OPERATION_FAILED, "%s",
+                       _("Virt type 'qemu' does not support vCPU pinning"));
+        goto endjob;
+    }
+
     if (persistentDef &&
         !(vcpuinfo = virDomainDefGetVcpu(persistentDef, vcpu))) {
         virReportError(VIR_ERR_INVALID_ARG,