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Eliminating fine grained timers in Xen
2011
Proceedings of the 3rd ACM workshop on Cloud computing security workshop - CCSW '11
The move to "infrastructure-as-a-service" cloud computing brings with it a new risk: cross-virtual machine side channels through shared physical resources such as the L2 cache. One approach to this risk is to rewrite sensitive code to eliminate the signal. In this paper we consider another approach: weakening malicious virtual machines' ability to receive the signal by eliminating fine-grained timers. Such "fuzzy time" was implemented in 1991 in the VAX security kernel, but it was not clearly
doi:10.1145/2046660.2046671
dblp:conf/ccs/VattikondaDS11
fatcat:zeq4x35qlbhutnmfau7dzbmffy