Invention Grant
- Patent Title: Efficient recording and replaying of non-deterministic instructions in a virtual machine and CPU therefor
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Application No.: US13926605Application Date: 2013-06-25
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Publication No.: US09436471B2Publication Date: 2016-09-06
- Inventor: Vyacheslav V. Malyugin , Min Xu , Boris Weissman , Ganesh Venkitachalam , Alexander Klaiber
- Applicant: VMware, Inc.
- Applicant Address: US CA Palo Alto
- Assignee: VMware, Inc.
- Current Assignee: VMware, Inc.
- Current Assignee Address: US CA Palo Alto
- Main IPC: G06F9/46
- IPC: G06F9/46 ; G06F9/455 ; G06F9/30 ; G06F11/34
Abstract:
The output of a non-deterministic instruction is handled during record and replay in a virtual machine. An output of a non-deterministic instruction is stored to a buffer during record mode and retrieved from a buffer during replay mode without exiting to the hypervisor. At least part of the contents of the buffer can be stored to a log when the buffer is full during record mode, and the buffer can be replenished from a log when the buffer is empty during replay mode.
Public/Granted literature
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