Microsoft Technology Licensing, LLC

Steven Adrian West

Jason Stewart Wohlgemuth

Emily Cara Clemens

Scott Chao-Chueh Lee

Andrew J Ritz

Steve Pronovost

James George Cavalaris

Emily Nicole Wilson

David Hepkin

Shen Wang

James Anthony Schwartz, Jr

Santosh Sharad Jodh

Aditya Bhandari

Gaurav Jagtiani

Ellsworth Davis Walker

Jin Lin

Michael Bishop Ebersol

Yuri Dotsenko

Naga Govindaraju

Michael G Tricker

Kapil Vaswani

Binit Ranjan Mishra

Attilio Mainetti

Minsang Kim

Emma Sutherland Boyd

Aacer Hatem Daken

Cody D Hartwig

Antoine Jean Denis Delignat-lavaud

Alexander Daniel Grest

Peter Hanpeng Jiang

Christina Marianne Curlette

Mukhtar Ahmed

Sri Harsha Kanukuntla

Drew Douglas Cross

Sharon Scarlet Tang

Jennifer Marie Bourlier

Terence Kwok Tak Chan

Raz Meir Aloni

Dexuan Cui

Michael Halstead Kelley

Sarah Elizabeth Stephenson

Carolina Cecilia Perez-vargas

Vijaybalaji Madhanagopal

In-place recovery of fatal system errors at virtualization hosts. A device identifies an occurrence of a fatal system error in the first instance of a host operating system (OS) executing in a computer system. The device determines to perform an in-place recovery for the fatal system error. The device performs the in-place recovery, including pausing the execution of a virtual machine (VM) by the first instance of the host OS, preserving a state of the VM within system memory of the computer system, and resuming the execution of the VM by a second instance of the host OS executing in the computer system based on the state of the VM that is preserved within the system memory of the computer system.

In-place recovery of fatal system errors at virtualization hosts

Methods, systems, and computer program products for direct assignment of physical devices to confidential virtual machines (VMs). At a first guest privilege context of a guest partition, a direct assignment of a physical device associated with a host computer system to the guest partition is identified. The guest partition includes the first guest privilege context and a second guest privilege context, which is restricted from accessing memory associated with the first guest privilege context. The guest partition corresponds to a confidential VM, such that a memory region associated with the guest partition is inaccessible to a host operating system. It is determined, based on a policy, that the physical device is allowed to be directly assigned to the guest partition. Communication between the physical device and the second guest privilege context is permitted, such as by exposing the physical device on a virtual bus and/or forwarding an interrupt.

Direct assignment of physical devices to confidential virtual machines

A method and apparatus for managing spare partition units in a partitionable computing device is disclosed. The method comprises detecting if a spare partition unit is required for addition or replacement in a local operating system and if a spare partition unit is required for addition, initiating an addition of a spare partition unit. If a spare partition unit is required for replacement, a replacement of a failing partition unit with a spare partition unit is initiated; part of the memory of the failing partition unit is passively migrated into the memory of the spare partition unit's partition; part of the memory of the failing partition unit is also actively migrated into the memory of the spare partition unit's partition; and the partitionable computing device is cleaned up. Partition units are replaced without requiring that computer-executable instructions be recompiled.

Replacing system hardware

Growing community of inventors

Redmond, WA, United States of America

Steven Adrian West