International Business Machines Corporation

Advanced Micro Devices Corporation

Carnegie Mellon University

Ati Technologies Ulc

Leendert Van Doorn

David A Kaplan

Reiner Sailer

Xiaolan Zhang

Paul Blinzer

Thomas R Woller

Gongxian Jeffrey Cheng

Adrian Perrig

Arshad Rahman

Elene Terry

Joshua S Schiffman

Arvind Seshadri

Mark Luk

Pradeep Khosla

Volkmar Uhlig

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 method, system, and apparatus for verifying integrity and execution state of an untrusted computer. In one embodiment, the method includes placing a verification function in memory on the untrusted computer; invoking the verification function from a trusted computer; determining a checksum value over memory containing both the verification function and the execution state of a processor and hardware on the untrusted computer; sending the checksum value to the trusted computer; determining at the trusted computer whether the checksum value is correct; and determining at the trusted computer whether the checksum value is received within an expected time period.

Verifying integrity and guaranteeing execution of code on untrusted computer platform

Methods and apparatus are provided, as an aspect of a combined CPU/APD architecture system, for discovering and reporting properties of devices and system topology that are relevant to efficiently scheduling and distributing computational tasks to the various computational resources of a combined CPU/APD architecture system. The combined CPU/APD architecture unifies CPUs and APDs in a flexible computing environment. In some embodiments, the combined CPU/APD architecture capabilities are implemented in a single integrated circuit, elements of which can include one or more CPU cores and one or more APD cores. The combined CPU/APD architecture creates a foundation upon which existing and new programming frameworks, languages, and tools can be constructed.

Device discovery and topology reporting in a combined CPU/GPU architecture system

A method for caching of page translations for virtual machines includes managing a number of virtual machines using a guest page table of a guest operating system, which provides a first translation from a guest-virtual memory address to a first guest-physical memory address or an invalid entry, and a host page table of a host operating system, which provides a second translation from the first guest-physical memory address to a host-physical memory address or an invalid entry, and managing a cache page table, wherein the cache page table selectively provides a third translation from the guest-virtual memory address to the host-physical memory address, a second guest-physical memory address or an invalid entry.

Method and apparatus for caching of page translations for virtual machines

A system and method for providing attestation and/or integrity of a server execution environment are described. One or more parts of a server environment are selected for measurement. The one or more parts in a server execution environment are measured, and the measurements result in a unique fingerprint for each respective selected part. The unique fingerprints are aggregated by an aggregation function to create an aggregated value, which is determinative of running programs in the server environment. A measurement parameter may include the unique fingerprints, the aggregated value or a base system value and may be sent over a network interface to indicate the server environment status or state.

Method and system for measuring status and state of remotely executing programs

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Valhalla, NY, United States of America

Leendert Van Doorn