Invention Grant
- Patent Title: Method and apparatus to allow secure guest access to extended page tables
-
Application No.: US15647179Application Date: 2017-07-11
-
Publication No.: US10437733B2Publication Date: 2019-10-08
- Inventor: Krystof C. Zmudzinski
- Applicant: Krystof C. Zmudzinski
- Applicant Address: US CA Santa Clara
- Assignee: Intel Corporation
- Current Assignee: Intel Corporation
- Current Assignee Address: US CA Santa Clara
- Agency: Nicholson De Vos Webster & Elliott LLP
- Main IPC: G06F12/10
- IPC: G06F12/10 ; G06F12/1009 ; G06F12/1036 ; G06F12/14 ; G06F9/455

Abstract:
An apparatus and method for efficient guest EPT manipulation. For example, one embodiment of a apparatus comprises: a hypervisor to create extended page table (EPT) mappings between a guest physical address (GPA) space and a host physical address (HPA) space; the hypervisor to create an EPT edit table and populate the EPT edit table with information related to permitted mappings between the GPA space and HPA space; a guest to read the EPT edit table to determine information related to the permitted mappings between the GPA space and HPA space, the guest to use the information to map one or more pages in the GPA space to one or more pages in the HPA space.
Public/Granted literature
- US20170371803A1 METHOD AND APPARATUS TO ALLOW SECURE GUEST ACCESS TO EXTENDED PAGE TABLES Public/Granted day:2017-12-28
Information query