Invention Grant
- Patent Title: Technologies for execute only transactional memory
-
Application No.: US14974972Application Date: 2015-12-18
-
Publication No.: US10558582B2Publication Date: 2020-02-11
- Inventor: David M. Durham , Michael Lemay , Men Long
- Applicant: Intel Corporation
- Applicant Address: US CA Santa Clara
- Assignee: Intel Corporation
- Current Assignee: Intel Corporation
- Current Assignee Address: US CA Santa Clara
- Agency: Barnes & Thornburg LLP
- Main IPC: G06F12/00
- IPC: G06F12/00 ; G06F12/1027 ; G06F9/30 ; G06F12/14

Abstract:
Technologies for execute only transactional memory include a computing device with a processor and a memory. The processor includes an instruction translation lookaside buffer (iTLB) and a data translation lookaside buffer (dTLB). In response to a page miss, the processor determines whether a page physical address is within an execute only transactional (XOT) range of the memory. If within the XOT range, the processor may populate the iTLB with the page physical address and prevent the dTLB from being populated with the page physical address. In response to an asynchronous change of control flow such as an interrupt, the processor determines whether a last iTLB translation is within the XOT range. If within the XOT range, the processor clears or otherwise secures the processor register state. The processor ensures that an XOT range starts execution at an authorized entry point. Other embodiments are described and claimed.
Public/Granted literature
- US20170097898A1 TECHNOLOGIES FOR EXECUTE ONLY TRANSACTIONAL MEMORY Public/Granted day:2017-04-06
Information query