Patent · US Active

Modifying memory permissions in a secure processing environment

US9355262B2 · kind B2 · utility

11Cited by

0References

10Claims

0Family size

Assignee

Intel Corporation · US

Inventors

Rebekah M. Leslie-Hurd · Portland, US
Ilya Alexandrovich · Haifa, IL
Ittai Anati · Ramat HaSharon, IL
Alex Berenzon · Zichron Ya'akov, IL
Michael A. Goldsmith · Lake Oswego, US
Simon P. Johnson · Beaverton, US
Francis X. McKeen · Portland, US
Carlos V. Rozas · Portland, US
Uday Savagaonkar · Redmond, US
Vincent R. Scarlata · Beaverton, US
Vedvyas Shanbhogue · Austin, US
Wesley H. Smith · Raleigh, US

Key dates

Filing date	Dec 27, 2013
Grant date	May 31, 2016
Priority date	—
Expiry date	Dec 27, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG06F2221/2141
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Embodiments of an invention for modifying memory permissions in a secure processing environment are disclosed. In one embodiment, a processor includes an instruction unit and an execution unit. The instruction unit is to receive an instruction to modify access permissions for a page in a secure enclave. The execution unit is to execute the instruction. Execution of the instruction includes setting new access permissions in an enclave page cache map entry. Furthermore, the page is immediately accessible from inside the secure enclave according to the new access permissions.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.