Abstract
Virtual memory, specifically paging, is undergoing significant innovation due to being challenged by new demands from modern workloads. Recent work has demonstrated an alternative software only design that can result in simplified hardware requirements, even supporting purely physical addressing. While we have made the case for this Compiler-And Runtime-based Address Translation (CARAT) concept, its evaluation was based on a user-level prototype. We now report on incorporating CARAT into a kernel, forming Compiler-And Runtime-based Address Translation for CollAborative Kernel Environments (CARAT CAKE). In our implementation, a Linux-compatible x64 process abstraction can be based either on CARAT CAKE, or on a sophisticated paging implementation. Implementing CARAT CAKE involves kernel changes and compiler optimizations/transformations that must work on all code in the system, including kernel code. We evaluate CARAT CAKE in comparison with paging and find that CARAT CAKE is able to achieve the functionality of paging (protection, mapping, and movement properties) with minimal overhead. In turn, CARAT CAKE allows significant new benefits for systems including energy savings, larger L1 caches, and arbitrary granularity memory management.
Original language | English (US) |
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Title of host publication | ASPLOS 2022 - Proceedings of the 27th ACM International Conference on Architectural Support for Programming Languages and Operating Systems |
Editors | Babak Falsafi, Michael Ferdman, Shan Lu, Thomas F. Wenisch |
Publisher | Association for Computing Machinery |
Pages | 98-114 |
Number of pages | 17 |
ISBN (Electronic) | 9781450392051 |
DOIs | |
State | Published - Feb 28 2022 |
Event | 27th ACM International Conference on Architectural Support for Programming Languages and Operating Systems, ASPLOS 2022 - Virtual, Online, Switzerland Duration: Feb 28 2022 → Mar 4 2022 |
Publication series
Name | International Conference on Architectural Support for Programming Languages and Operating Systems - ASPLOS |
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Conference
Conference | 27th ACM International Conference on Architectural Support for Programming Languages and Operating Systems, ASPLOS 2022 |
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Country/Territory | Switzerland |
City | Virtual, Online |
Period | 2/28/22 → 3/4/22 |
Funding
This project was supported by the United States National Science Foundation via grants 1763743. 1908488, 2028851, 2119069.
Keywords
- kernel
- memory management
- runtime
- virtual memory
ASJC Scopus subject areas
- Software
- Information Systems
- Hardware and Architecture