Memory protection method and protection proxy control apparatus
US12399841B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Jan 31, 2023 |
| Grant date | Aug 26, 2025 |
| Priority date | — |
| Expiry date | Jun 9, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/1458
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
This application discloses a memory protection method and a protection proxy control apparatus. In an example method, in response to determining that an accelerator or an input/output (I/O) device requests to access a system memory by using a direct physical address, the protection proxy control apparatus may obtain, based on an identifier of a data stream of the accelerator or the I/O device, permission information of a physical page table in which a physical address requested to be accessed by the data stream is located, and perform permission check on the memory access request based on the permission information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.