Guest operating system buffer and log accesses by an input-output memory management unit
US12260120B2 · kind B2 · utility
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22Claims
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Key dates
| Filing date | Jun 10, 2019 |
| Grant date | Mar 25, 2025 |
| Priority date | — |
| Expiry date | Jan 29, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2009/45579
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An electronic device includes a processor that executes a guest operating system; a memory having a guest portion that is reserved for storing data and information to be accessed by the guest operating system; and an input-output memory management unit (IOMMU). The IOMMU writes, in the guest portion, information into guest buffers and/or logs used for communicating information from the IOMMU to the guest operating system. The IOMMU also reads, from the guest portion, information in guest buffers and/or logs used for communicating information from the guest operating system to the IOMMU.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.