Invention Grant
- Patent Title: Apparatus and method for providing one time programmable memory features in a hypervisor of a computing device
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Application No.: US17266901Application Date: 2018-08-08
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Publication No.: US11775201B2Publication Date: 2023-10-03
- Inventor: Liming Wu , Kui Wang , Rémi Robert Michel Denis-Courmont , Igor Stoppa
- Applicant: Huawei Technologies Co., Ltd.
- Applicant Address: CN Shenzhen
- Assignee: Huawei Technologies Co., Ltd.
- Current Assignee: Huawei Technologies Co., Ltd.
- Current Assignee Address: CN Shenzhen
- Agency: Leydig, Voit & Mayer, Ltd.
- International Application: PCT/EP2018/071554 2018.08.08
- International Announcement: WO2020/030268A 2020.02.13
- Date entered country: 2021-02-08
- Main IPC: G06F12/00
- IPC: G06F12/00 ; G06F3/06 ; G06F9/455 ; G06F21/53 ; G06F12/14 ; G06F12/02

Abstract:
An apparatus that includes a processor and a memory. The processor and the memory are configured to provide a first software process configured to execute at a first privilege level; and a second software process configured to execute at a second privilege level, wherein the first privilege level is more restrictive than the second privilege level. The processor is configured to, initialize, at the first privilege level, a memory pool within the memory, allocate, at the first privilege level, a block of memory, send a request to write protect the block of memory to the second software process, and to write protect, at the second privilege level, the allocated block of memory.
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