公开(公告)号：US11726852B2

公开(公告)日：2023-08-15

申请号：US17577627

申请日：2022-01-18

Applicant: VMware, Inc.

Inventor： Andrei Warkentin ,  Sunil Kotian ,  Jared McNeill ,  Shruthi Hiriyuru ,  Alexander Fainkichen

IPC: G06F11/00 ,  G06F11/07 ,  G06F9/455 ,  G06F11/14

CPC classification number: G06F11/0757 ,  G06F9/45541 ,  G06F11/0772 ,  G06F11/1417 ,  G06F11/1484

Abstract: A hardware-assisted paravirtualized hardware watchdog is described that is used to detect and recover from computer malfunctions. A computing device determines that a hardware-implemented watchdog of the computing device does not comply with predetermined watchdog criteria, where the hardware-implemented watchdog is configured to send a reset signal when a first predetermined amount of time elapses without receipt of a first refresh signal. If the hardware-implemented watchdog does not comply with the predetermined watchdog criteria, a runtime watchdog service is initialized using a second predetermined amount of time. The runtime watchdog service is directed to periodically send the refresh signal to the hardware-implemented watchdog before an expiration of the first predetermined amount of time that causes the hardware-implemented watchdog to expire. The hardware-implemented watchdog is directed to send the reset signal when the second predetermined amount of time elapses without receipt of a second refresh signal.

公开(公告)号：US20230229480A1

公开(公告)日：2023-07-20

申请号：US17704040

申请日：2022-03-25

Applicant: VMWARE, INC.

Inventor： Andrei Warkentin ,  Karthik Ramachandra ,  Timothy P. Mann ,  Jared McNeill ,  Sunil Kotian ,  Cyprien Laplace ,  David A. Dunn

IPC: G06F9/455

CPC classification number: G06F9/45558 ,  G06F2009/45595

Abstract: Disclosed are various examples of provisioning a data processing unit (DPU) management operating system using a capsule. A management hypervisor installer executed on a host device receives a listing DPU device from a baseboard management controller (BMC). A preinstalled DPU management operating system image is identified for a DPU device from the listing, and is wrapped with a capsule that specifies the capsule as a DPU management operating system image capsule. A server component provides the DPU management operating system image capsule at a particular URI, and the URI is transmitted to the BMC.

公开(公告)号：US11561894B2

公开(公告)日：2023-01-24

申请号：US17142980

申请日：2021-01-06

Applicant: VMware, Inc.

Inventor： Andrei Warkentin ,  Alexander Fainkichen ,  Ye Li ,  Regis Duchesne ,  Cyprien Laplace ,  Shruthi Hiriyuru ,  Sunil Kotian

IPC: G06F12/06 ,  G06F9/455 ,  G06F13/16 ,  G06F13/42

Abstract: Techniques for enabling efficient guest OS access to PCIe configuration space are provided. In one set of embodiments, a hypervisor can reserve a single host physical memory page in the host physical memory of a host system and can populate the single host physical memory page with a value indicating non-presence of PCIe device functions. The hypervisor can then create, for each guest physical memory page in a guest physical memory of a virtual machine (VM) corresponding to a PCIe configuration space of an absent PCIe device function in the VM, a mapping in the hypervisor's second-level page tables that maps the guest physical memory page to the single host physical memory page.