Invention Grant
- Patent Title: Hypercall acceleration for nested virtual machines
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Application No.: US16866510Application Date: 2020-05-04
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Publication No.: US11698806B2Publication Date: 2023-07-11
- Inventor: Michael Tsirkin , Karen Noel
- Applicant: RED HAT, INC.
- Applicant Address: US NC Raleigh
- Assignee: Red Hat, Inc.
- Current Assignee: Red Hat, Inc.
- Current Assignee Address: US NC Raleigh
- Agency: Lowenstein Sandler LLP
- Main IPC: G06F9/455
- IPC: G06F9/455

Abstract:
Systems and methods for accelerating hypercalls for nested virtual machines. An example method may comprise executing, by a host computer system, a Level 0 hypervisor managing a Level 1 virtual machine (VM). The Level 0 hypervisor receives a first function component from a Level 2 hypervisor managing a Level 3 VM, where the first function component performs a first functionality associated with a hypercall issued by the Level 3 VM; stores the first function component in a memory space associated with the Level 0 hypervisor; detects the hypercall issued by the Level 3 VM; and responsive to detecting the hypercall, executes the first function component to modify a VM context for the Level 3 VM.
Public/Granted literature
- US20210342176A1 HYPERCALL ACCELERATION FOR NESTED VIRTUAL MACHINES Public/Granted day:2021-11-04
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