FACILITATING PROCESSING WITHIN COMPUTING ENVIRONMENTS SUPPORTING PAGEABLE GUESTS

摘要

Processing within a computing environment that supports pageable guests is facilitated. Processing is facilitated in many ways, including, but not limited to, associating guest and host state information with guest blocks of storage; maintaining the state information in control blocks in host memory; enabling the changing of states; and using the state information in management decisions. In one particular example, the guest state includes an indication of usefulness and importance of memory contents to the guest, and the host state reflects the ease of access to memory contents. The host and guest state information is used in managing memory of the host and/or guests.

主权项

1. A computer program product for facilitating management of state information, said computer program product comprising:
a computer readable storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method comprising:
associating guest state information of a guest to be executed by a virtual machine of a computing environment with a block of memory assigned to the guest, the associating comprising defining one or more available guest memory states, wherein a guest memory state describes a state of the block of memory as it relates to the guest, and wherein current guest state information is maintained in memory of a host of the computing environment, the host to manage the virtual machine, and wherein the current guest state information comprises one of the available guest memory states indicating the current state of the block of memory assigned to the guest; andproviding to the guest the guest state information of the block of memory assigned to the guest absent host involvement, wherein the guest state information provided to the guest comprises a particular guest memory state indicating a particular meaning contents of the block of memory have to the guest.