Flexible memory mapped input/output (I/O) space definition for a virtual device in a scalable I/O virtualization (S-IOV) architecture

US11513924B2 · kind B2 · utility

Assignee

• Intel Corporation · US

Inventors

• Nrupal Jani · Hillsboro, US
• Manasi Deval · Portland, US
• Anjali Singhai Jain · Portland, US
• Parthasarathy Sarangam · Portland, US
• Mitu Aggarwal · Portland, US
• Neerav Parikh · Hillsboro, US
• Alexander H. Duyck · Beaverton, US
• Kiran Patil · Portland, US
• Rajesh M. Sankaran · Portland, US
• Sanjay Kumar · Hillsboro, US
• Utkarsh Y. Kakaiya · Folsom, US
• Philip R. Lantz · Cornelius, US
• Kun Tian · Shanghai, CN

Key dates

• Filing date: Dec 6, 2018
• Grant date: Nov 29, 2022
• Expiry date: Jan 12, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F2213/0058
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

Examples may include a method of instantiating a virtual machine; instantiating a virtual device to transmit data to and receive data from assigned resources of a shared physical device by receiving input data requesting assigned resources for the virtual device, allocating assigned resources to the virtual device based at least in part on the input data, and mapping a page location in an address space of the shared physical device for a selected one of the assigned resources to a page location in a memory-mapped input/output (MMIO) space of the virtual device; and assigning the virtual device to the virtual machine, the virtual machine to transmit data to and receive data from the physical device via the MMIO space of the virtual device.