[libvirt] [PATCH] qemu: hotplug: print correct vcpu when validating hot(un)plug config

[Peter Krempa]

The error message would contain first vcpu id after the list of vcpus
selected for modification. To print the proper vcpu id remember the
first vcpu selected to be modified.
---
 src/qemu/qemu_hotplug.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
index e8d29186e..1d7f2cc71 100644
--- a/src/qemu/qemu_hotplug.c
+++ b/src/qemu/qemu_hotplug.c
@@ -5866,6 +5866,7 @@ qemuDomainVcpuValidateConfig(virDomainDefPtr def,
     virDomainVcpuDefPtr vcpu;
     size_t maxvcpus = virDomainDefGetVcpusMax(def);
     ssize_t next;
+    ssize_t firstvcpu = -1;

     /* vcpu 0 can't be disabled */
     if (!state && virBitmapIsBitSet(map, 0)) {
@@ -5880,13 +5881,17 @@ qemuDomainVcpuValidateConfig(virDomainDefPtr def,
             continue;

         /* skip vcpus being modified */
-        if (virBitmapIsBitSet(map, next))
+        if (virBitmapIsBitSet(map, next)) {
+            if (firstvcpu < 0)
+                firstvcpu = next;
+
             continue;
+        }

         if (vcpu->online && vcpu->hotpluggable == VIR_TRISTATE_BOOL_NO) {
             virReportError(VIR_ERR_INVALID_ARG,
                            _("vcpu '%zd' can't be modified as it is followed "
-                             "by non-hotpluggable online vcpus"), next);
+                             "by non-hotpluggable online vcpus"), firstvcpu);
             return -1;
         }
     }
-- 
2.12.2