Some light reading regarding SERVC (but LOADPARM in particular): http://www.docstoc.com/docs/55135658/Method-And-System-For-Providing-A-Hardware-Machine-Function-In-A-Protected-Virtual-Machine---Patent-6681238 http://www.patentmine.com/grant/06253224_desc.html http://www.patentstorm.us/patents/5386512/description.html http://www.patentvest.com/console/reports/docs/grant/05386512.html
This one was interesting: ISX/390 - I remember this one from the early days on Linux on z but heard not much since: http://ip.com/patent/US6530078
