...processors have a privileged mode of execution that the OS kernel executes in, and a non-privileged mode that the user programsexecute in. This can cause a problem for virtual machines because although the host OS (or the hypervisor) runs in privileged...
http://www.sys-con.com/node/606058
Large Files White Paper page 8 Overview New 64-bit API HP-UX adds a set of 64-bit data types, system calls, and libc routines in the form ofinterface64() to support large files.
http://docs.hp.com/en/940/lgfiles4.pdf