公开(公告)号：US09940148B1

公开(公告)日：2018-04-10

申请号：US13959608

申请日：2013-08-05

Applicant: Amazon Technologies, Inc.

Inventor： Uwe Dannowski

IPC: G06F9/455 ,  G06F9/445

CPC classification number: G06F9/45533 ,  G06F8/656 ,  G06F9/4418

Abstract: Techniques for in-place updates of hypervisors are described herein. At a time after receiving an update hypervisor request, one or more controlling domains within a computing system invoke one or more system capabilities at least to pause execution of currently running client domains and non-essential CPUs. While the client domains and non-essential CPUs are paused, a new hypervisor in instantiated, state information is copied from the existing hypervisor to the new hypervisor. After the state and/or configuration copy is complete, control is switched form the existing hypervisor to the new hypervisor and client domains and non-essential CPUs are resumed.