HyperHammer: Breaking Free from KVM-Enforced Isolation - Chen, Wei; Zhi Zhang; Xin Zhang; Qingni Shen; Yuval Yarom; Daniel Genkin; Chen Yan; Wang, Zhe (Proceedings of the 30th ACM International Conference on Architectural Support for Programming Languages and Operating Systems, Volume 2, ASPLOS 2025, Rotterdam, Netherlands, 30 March 2025 - 3 April 2025, 2025)