NDLI: Comparisons of Memory Virtualization Solutions for Architectures with Software-Managed TLBs

Content Provider	IEEE Xplore Digital Library
Author	Yunfang Tai Wanwei Cai Qi Liu Ge Zhang Wenzhi Wang
Copyright Year	2013
Description	Author affiliation: State Key Lab. of Comput. Archit., China (Yunfang Tai; Wanwei Cai; Qi Liu; Ge Zhang; Wenzhi Wang)
Abstract	Memory virtualization plays an important role in system virtualization. However, traditional memory virtualization solutions are usually for those architectures with hardware-managed TLBs, such as x86, ARM and so on. The solutions for architectures with software-managed TLBs are rarely mentioned. This paper presents three different memory virtualization solutions for architectures with software-managed TLBs. The difference is that different methods are used to tackle guest TLBs. One is emulating the guest TLBs by software, another is eliminating the guest TLBs and the third is emulating guest TLBs by hardware. After comparisons on hardware platform with MIPS CPUs, it can be seen that the method eliminating guest TLBs can increase the memory bandwidth by more than 100% on average compared to the method emulating guest TLBs by software. After comparisons on simulation platform with MIPS CPUs, it can be seen that the method emulating guest TLBs by hardware would cause about 135% more extra exceptions than the method eliminating guest TLBs. The method eliminating guest TLBs is a good choice when full virtualization is not necessary on the CPUs with software-managed TLBs.
Starting Page	125
Ending Page	130
File Size	576937
Page Count	6
File Format	PDF
ISBN	9780769550343
DOI	10.1109/NAS.2013.22
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-07-17
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	memory virtualization Virtual machine monitors KVM software-managed TLB Computer architecture Bandwidth Hardware Software Virtual machining MIPS Virtualization
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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