Computer configuration for resource management in systems...

Details Computer configuration for resource management in systems... Computer configuration for resource management in systems...

2005-11-01

2005-11-01

An, Meng-Al T. (Department: 2194)

Electrical computers and digital processing systems: interprogra

Data transfer between operating systems

C719S310000

Reexamination Certificate

active

06961941

ABSTRACT:
A computer architecture includes a first operating system (COS), which may be a commodity operating system, and a kernel, which acts as a second operating system. The COS is used to boot the system as a whole. After booting, the kernel is loaded and displaces the COS from the system level, meaning that the kernel itself directly accesses predetermined physical resources of the computer. All requests for use of system resources then pass via the kernel. System resources are divided into those that, in order to maximize speed, are controlled exclusively by the kernel, those that the kernel allows the COS to handle exclusively, and those for which control is shared by the kernel and COS. In the preferred embodiment of the invention, at least one virtual machine (VM) runs via a virtual machine monitor, which is installed to run on the kernel. Each VM, the COS, and even each processor in a multiprocessor embodiment, are treated as separately schedulable entities that are scheduled by the kernel. Mechanisms for high-speed I/O between VM's and I/O devices are also included.

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