Autonomic computing utilizing a sequestered processing resource on a host CPU

An autonomic computing environment is provided by sequestering one of a plurality of processor resources, partitioning a memory, and hiding an input/output (I/O) device. One processor resource is sequestered such that the sequestered processor resource is not exposed to the remaining processor resources as a processor resource. A memory region is partitioned to provide a service processing portion such that the sequestered processor resource has access to all of the memory region and the remaining processor resources have access to at least a portion of the memory region but do not have access to the service processing portion. A first I/O device is hidden such that the sequestered processor resource has access to the first I/O device and the remaining processor resources do not have access to the first I/O device.