In a virtual machine environment, a hypervisor is configured to expose a virtual cache topology to a guest operating system, such that the virtual cache topology may be provided by corresponding physical cache topology. The virtual cache topology may be determined by the hypervisor or, in the case of a datacenter environment, may be determined by the datacenter's management system. The virtual cache topology may be calculated from the physical cache topology of the system such that virtual machines may be instantiated with virtual processors and virtual cache that may be mapped to corresponding logical processors and physical cache.