Accessing host services for virtual guest operating systems

A computer program product comprising:

• one or more computer readable storage media and program instructions stored on the one or more computer readable storage media, wherein the one or more computer readable storage media are not transitory signals per se, the program instructions comprising:
• program instructions to intercept a hardware instruction from a guest operating system, wherein a hypervisor of a host operating system receives control, and wherein the hardware instruction is associated with data located in a register and in memory that is accessible by the hypervisor;
• program instructions to analyze the hardware instruction and data to determine if the hardware instruction is a non-functional service request, wherein the non-functional service request is a request for a service that the guest operating system does not have access to;
• program instructions to, upon determining that the hardware instruction is a non-functional service request, execute the non-functional service request, wherein a response of the non-functional service request is written to the associated memory that is accessible by the hypervisor;
• and
• program instructions to notify the guest operating system that the execution of the non-functional service request is complete and the response is available.

A computer system comprising:

• one or more computer processors;
• one or more computer readable storage media;
• program instructions stored on the computer readable storage media for execution by at least one of the one or more processors, the program instructions comprising:
• program instructions to intercept a hardware instruction from a guest operating system, wherein a hypervisor of a host operating system receives control, and wherein the hardware instruction is associated with data located in a register and in memory that is accessible by the hypervisor;
• program instructions to analyze the hardware instruction and data to determine if the hardware instruction is a non-functional service request, wherein the non-functional service request is a request for a service that the guest operating system does not have access to;
• program instructions to, upon determining that the hardware instruction is a non-functional service request, execute the non-functional service request, wherein a response of the non-functional service request is written to the associated memory that is accessible by the hypervisor;
• and
• program instructions to notify the guest operating system that the execution of the non-functional service request is complete and the response is available.