Zhichao Hua

EPTI: efficient defence against meltdown attack for unpatched VMs

2018 · USENIX Annual Technical Conference

The Meltdown vulnerability, which exploits the inherent out-of-order execution in common processors like x86, ARM and PowerPC, has shown to break the fundamental isolation boundary between user and kernel space. This has stimulated a non-trivial …

CPS: A Cooperative Para-virtualized Scheduling Framework for Manycore Machines

2023

Today's cloud platforms offer large virtual machine (VM) instances with multiple virtual CPUs (vCPU) on manycore machines. These machines typically have a deep memory hierarchy to enhance communication between cores. Although previous researches have primarily …

XpuTEE: A High-Performance and Practical Heterogeneous Trusted Execution Environment for GPUs

2025 · ACM Transactions on Computer Systems

AI applications are employed in diverse scenarios, including data centers, personal computers, smart cars, and so on. Their privacy is threatened by the intricate software stacks and the potential malfeasance of system maintainers. The Trusted …