Defining virtualized page attributes based on guest page attributes

US10713177B2 · kind B2 · utility

Assignee

• Intel Corporation · US

Inventors

• Gilbert Neiger · Hillsboro, US
• Baiju V. Patel · Portland, US
• Gur Hildesheim · Haifa, IL
• Ron Rais · Hadera, IL
• Andrew V. Anderson · Forest Grove, US
• Jason W. Brandt · Austin, US
• David M. Durham · Beaverton, US
• Barry E. Huntley · Hillsboro, US
• Raanan Sade · Migdal HaEmek, IL
• Ravi L. Sahita · Portland, US
• Vedvyas Shanbhogue · Austin, US
• Arumugam Thiyagarajah · Folsom, US

Key dates

• Filing date: Sep 9, 2016
• Grant date: Jul 14, 2020
• Expiry date: Apr 21, 2037

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F2212/651
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

A processing system includes a processing core to execute a virtual machine (VM) comprising a guest operating system (OS) and a memory management unit, communicatively coupled to the processing core, comprising a storage device to store an extended page table entry (EPTE) comprising a mapping from a guest physical address (GPA) associated with the guest OS to an identifier of a memory frame, a first plurality of access right flags associated with accessing the memory frame in a first page mode referenced by an attribute of a memory page identified by the GPA, and a second plurality of access right flags associated with accessing the memory frame in a second page mode referenced by the attribute of the memory page identified by the GPA.