1. A host information handling system (IHS), comprising: a processor; a system memory coupled to the processor, the system memory being partitioned into a plurality of logical partitions (LPARs) including a particular LPAR, the host IHS including a plurality of physical host channel adapters (HCAs), the system memory being configured to: provide a single instance of an operating system to the particular LPAR, the single instance of the operating system including a common layer that provides virtualization of the physical HCAs and sharing of the physical HCAs by multiple virtual HCAs.