Hello,

Does KVM support hotadd memory and hot-plug cpu?
 
I checked it using the virsh command but I can only increase the memory to the maximum memory that is initially  set

But setmaxmem command is failing. Which means this require a reboot of the guest

# virsh setmaxmem 4 1048576
error: Unable to change MaxMemorySize
error: Requested operation is not valid: cannot resize the maximum memory on an active domain

#virsh setvcpus 4 4
error: internal error: unable to execute QEMU command 'cpu-add': Not supported

Thanks
ravargs