Patent ID: 9678776
Date: 2017-06-13
CPC Classifications: G06F

Claim:
1. A method to suppress a facility subset using an installed facilities table, the method comprising: simulating, by an operating system executed by a computer processor of a physical machine, an old machine model within a virtual machine system to produce a simulated machine, wherein the virtual machine system is executed on the physical machine comprising machine hardware that is new with respect to the old machine model, wherein the machine hardware provides facilities that are not allowed on the old machine model; creating an allowed facilities table and the installed facilities table using the operating system; loading the allowed facilities table that points to facilities of the old machine model; querying, during an operating system initialization of the virtual machine system, facilities being executed by the simulated machine facilities, wherein the facilities that are not allowed on the old machine model are included in the facilities being executed by the simulated machine; loading the installed facilities table to comprise the facilities of the old machine model and the facilities being executed by the simulated machine based on the loading of the allowed facilities table and the querying of the facilities being executed by the simulated machine; determining the facility subset by: suppressing the facility subset by allowing the simulated machine to access only facilities of the installed facilities table that are not disabled.