qemu: fix set vcpus on host without NUMA

We don't have to modify cpuset.mems on hosts without NUMA.  It also
fixes an error message that you get instead of success if you trying
update vcpus of a guest on a host without NUMA.

error: internal error: NUMA isn't available on this host

Signer-off-by: Pavel Hrdina <phrdina@redhat.com>

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 4279af865a6cd2aaed9be9c42799daa622ab8e5b..2c55fb0a8662659027c8c56c3d01baf3f0c1d933 100644 (file)
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -4890,7 +4890,8 @@ qemuDomainSetVcpusFlags(virDomainPtr dom, unsigned int nvcpus,
                                         &persistentDef) < 0)
         goto endjob;
 
-    if (flags & VIR_DOMAIN_AFFECT_LIVE && !(flags & VIR_DOMAIN_VCPU_GUEST)) {
+    if (flags & VIR_DOMAIN_AFFECT_LIVE && !(flags & VIR_DOMAIN_VCPU_GUEST) &&
+        virNumaIsAvailable()) {
         if (virCgroupNewEmulator(priv->cgroup, false, &cgroup_temp) < 0)
             goto endjob;