1. A system comprising: a first physical processor to support a virtualization environment to run a virtual processor; look-up circuitry to look up an entry associated with an interrupt request to the virtual processor in a first data structure; and posting logic to post the interrupt request in a second data structure specified by first information in the first data structure and to generate a notification event to the first physical processor, the second data structure to include an identifier of the first physical processor, the notification event to indicate that the interrupt request is posted for the virtual processor.