Avoiding cache line sharing in virtual machines

Details Avoiding cache line sharing in virtual machines Avoiding cache line sharing in virtual machines

2006-07-21

2009-06-16

Ellis, Kevin L (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

C711S118000, C711S127000, C711S129000

Reexamination Certificate

active

07549022

ABSTRACT:
Avoiding cache-line sharing in virtual machines can be implemented in a system running a host and multiple guest operating systems. The host facilitates hardware access by a guest operating system and oversees memory access by the guest. Because cache lines are associated with memory pages that are spaced at regular intervals, the host can direct guest memory access to only select memory pages, and thereby restrict guest cache use to one or more cache lines. Other guests can be restricted to different cache lines by directing memory access to a separate set of memory pages.

REFERENCES:
patent: 5675763 (1997-10-01), Mogul
patent: 6507898 (2003-01-01), Gibson et al.
patent: 6901493 (2005-05-01), Maffezzoni
patent: 6944719 (2005-09-01), Rowlands et al.
patent: 7376821 (2008-05-01), Stephan et al.
patent: 7506198 (2009-03-01), Shoham
patent: 2005/0132364 (2005-06-01), Tewari et al.
patent: 2005/0235123 (2005-10-01), Zimmer et al.
patent: 15036169 (2003-01-01), None
Page, Daniel. Partitioned Cache Architecture as a Side-Channel Defence Mechanism. 2005. pp. 1-14.
Osvik, Dag. Cache Attacks and Countermeasures: the Case of AES. Aug. 14, 2005. pp. 1-25.
Bernstein, D., “Cache-timing attacks on AES,” 2005, 36 pages.
Bonneau, J. et al., “Cache Collision Timing Attacks Against AES,” Jun. 21, 2006, 1-16.
Bonneau, J. et al., “Powerpoint: Cache-Collision Timing Attacks Against AES,” Jun. 2006, 56 pages.
Osvik, D. et al., “Cache Attacks and Countermeasures: the Case of AES (Extended Version),” Oct. 2005, 1-25.
Osvik, D. et al., “Powerpoint: Full AES key extraction in 65 milliseconds using cache attacks,” Weizmann Institute of Science, 2005, 14 pages.
Percival, C., “Cache Missing for Fun and Profit,” 2005, 1-13.

Affiliated with

Also associated with

Rating

Avoiding cache line sharing in virtual machines does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Avoiding cache line sharing in virtual machines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Avoiding cache line sharing in virtual machines will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4129052