Advanced Micro Devices Corporation

Joshua S Schiffman

David A Kaplan

Leendert Van Doorn

A processing system includes a processor that implements registers to define a state of a virtual machine (VM) running on the processor. The processor detects exit conditions of the VM. The processing system also includes a memory element to store contents of the registers in a first data structure that is isolated from a hypervisor of the VM in response to the processor detecting an exit condition. The VM is to selectively expose contents of a subset of the registers to the hypervisor.

Protecting state information for virtual machines

A system and method are disclosed for securely receiving data from an input device coupled to a computing system. The system includes an interface configured to receive data from an input device, a coprocessor, and a host computer, wherein the host computer includes an input handler and a host processor. The host processor is configured to execute code in a normal mode and in a privileged mode. The host processor switches from the normal mode to the secure mode upon data being available from the interface while the host computer is in a secure input mode. The input handler receives the data from the interface and sends the received data to the coprocessor responsive to receiving the data while operating in the secure mode.

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Austin, TX, United States of America

Joshua S Schiffman