Abstract
Until recently, the x86 architecture has not permitted classical trap-and-emulate virtualization. Virtual Machine Monitors for x86, such as VMware ® Workstation and Virtual PC, have instead used binary translation of the guest kernel code. However, both Intel and AMD have now introduced architectural extensions to support classical virtualization.We compare an existing software VMM with a new VMM designed for the emerging hardware support. Surprisingly, the hardware VMM often suffers lower performance than the pure software VMM. To determine why, we study architecture-level events such as page table updates, context switches and I/O, and find their costs vastly different among native, software VMM and hardware VMM execution.We find that the hardware support fails to provide an unambiguous performance advantage for two primary reasons: first, it offers no support for MMU virtualization; second, it fails to co-exist with existing software techniques for MMU virtualization. We look ahead to emerging techniques for addressing this MMU virtualization problem in the context of hardware-assisted virtualization.
Publisher
Association for Computing Machinery (ACM)
Subject
Computer Graphics and Computer-Aided Design,Software
Reference24 articles.
1. AMD. AMD64 Virtualization Codenamed "Pacifica" Technology: Secure Virtual Machine Architecture Reference Manual May 2005. AMD. AMD64 Virtualization Codenamed "Pacifica" Technology: Secure Virtual Machine Architecture Reference Manual May 2005.
2. Dynamo
3. Xen and the art of virtualization
4. Comments on "the case for the reduced instruction set computer," by Patterson and Ditzel
Cited by
149 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
1. Building GPU TEEs using CPU Secure Enclaves with GEVisor;Proceedings of the 2023 ACM Symposium on Cloud Computing;2023-10-30
2. PVM: Efficient Shadow Paging for Deploying Secure Containers in Cloud-native Environment;Proceedings of the 29th Symposium on Operating Systems Principles;2023-10-23
3. Tailor-made Virtualization Monitor Design for CPU Virtualization on LEON Processors;ACM Transactions on Embedded Computing Systems;2023-07-24
4. Contiguitas: The Pursuit of Physical Memory Contiguity in Datacenters;Proceedings of the 50th Annual International Symposium on Computer Architecture;2023-06-17
5. IRIS: a Record and Replay Framework to Enable Hardware-assisted Virtualization Fuzzing;2023 53rd Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN);2023-06