公开(公告)号：US20180113764A1

公开(公告)日：2018-04-26

申请号：US15332981

申请日：2016-10-24

Applicant: Microsoft Technology Licensing, LLC

Inventor： Aditya Bhandari ,  Kenneth D. Johnson ,  Cody Dean Hartwig ,  Bruce J. Sherwin, JR. ,  Jason S. Wohlgemuth

IPC: G06F11/14 ,  G06F11/07

CPC classification number: G06F11/1441 ,  G06F11/0712 ,  G06F11/0757 ,  G06F11/0778 ,  G06F11/1438

Abstract: A computing device runs a hypervisor that manages a watchdog timer, referred to as a hypervisor watchdog timer, for each operating system in each partition. Each hypervisor watchdog timer is re-armed at various intervals by the operating system running in the associated partition. In response to a hypervisor watchdog timer expiring, the watchdog timer resets the operating system in the associated partition. Optionally, after a threshold amount of time elapses without being re-armed, the hypervisor watchdog timer issues a non-maskable interrupt (NMI) to the operating system in the associated partition to allow the operating system to store crash data. Operation of the hypervisor watchdog timers is paused when the computing device enters a low power mode and resumes when the computing device exits the low power mode, removing any need to re-arm the hypervisor watchdog timers while the computing device is in the low power mode.