Protecting an operating system kernel from third party drivers

Details Protecting an operating system kernel from third party drivers Protecting an operating system kernel from third party drivers

2004-01-30

2008-10-14

Puente, Emerson C (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C719S324000

Reexamination Certificate

active

07437613

ABSTRACT:
By loading deprivileged drivers, such as third party supplied drivers, into a virtual machine under control of a virtual machine monitor, a kernel may be protected from faults that arise on those drivers. When a fault is detected, the system may transition from a guest mode, wherein the third party drivers operate through the virtual machine monitor, to a monitor mode, wherein the monitor takes control and provides appropriate correction if possible. In some cases, the virtual machine monitor may simply destroy and restart the virtual machine. In such cases, it may be possible to overcome the faults without crashing the entire operating system.

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