Re: [libvirt PATCH] qemu: fix detection of vCPU pids when multiple dies are present

On Fri, Mar 13, 2020 at 16:46:16 +0000, Daniel Berrange wrote: > The logic for querying hotpluggable CPUs needs to sort the list > of CPUs returned by QEMU. Unfortunately our sorting method failed > to use the die_id field, so CPUs were not correctly sorted. > > This is seen when configuring a guest with partially populated > CPUs > > <vcpu placement='static' current='1'>16</vcpu> > <cpu...> > <topology sockets='4' dies='2' cores='1' threads='2'/> > </cpu> > > Then trying to start it would fail: > > # virsh -c qemu:///system start demo > error: Failed to start domain demo > error: internal error: qemu didn't report thread id for vcpu '0' > > Signed-off-by: Daniel P. Berrangé <berrange(a)redhat.com&gt; > --- > src/qemu/qemu_domain.c | 10 ++++++++-- > src/qemu/qemu_monitor.c | 2 ++ > src/qemu/qemu_monitor.h | 2 ++ > src/qemu/qemu_monitor_json.c | 4 ++++ > 4 files changed, 16 insertions(+), 2 deletions(-) Please add a test entry to 'testQemuMonitorCPUInfo' test case for this purpose. You'll need to extend testQemuMonitorCPUInfoFormat.