Set/unset VCPU to VM

Question

Hello,
As to the "Oracle White Paper - Hard Partitioning With Oracle VM Server for x86" it is clear how to set VCPU for VM's, but there is nothing mentioned how to unset already pinned VCPU's.
For example:
Oracle VM 3: Configuring Hard Partitioning
Let's bind the vCPUs to core 0 by running the following command:
# ./ovm_vmcontrol -u admin -p Manager1 -h localhost -v apitest -c vcpuset -s 0
Oracle VM VM Control utility 0.5.2.
Connected.
Command : vcpuset
Pinning virtual CPUs
Pinning of virtual CPUs to physical threads '0' 'apitest' completed.
Now, running the
xm vcpu-list command, the CPU binding immediately took effect (and also will on subsequent startups of the VM):
# xm vcpu-list 1
Name ID VCPU CPU State Time(s) CPU Affinity
0004fb00000600007c351fa24276c63f 1 0 0 -b- 4687.6 0
0004fb00000600007c351fa24276c63f 1 1 0 -b- 4547.2 0
What should be the command to revert that back to VCPU "any" ?
Manually editing the vm.cfg does not effect the output retured from the "vcpuget
Thank you.

Answer 1

Hi,
Oracle VM Server for x86 utilizes CPU pinning to bind Virtual CPUs (vCPUs) to physical CPUs. This prevents the vCPUs from running workloads on physical CPUs other than the ones specified. and to revert to the default configuration.
Verify with the help how to set "CPU Affinity" to any.
     # ./ovm_vmcontrol --help
I hope this can help you
Thinks to share with us the solution
Best Regards