How to Use a 64-Bit Virtual Address Space (1992)
| Venue: | Department of Computer Science and Engineering, University of Washington |
| Citations: | 34 - 4 self |
BibTeX
@TECHREPORT{Chase92howto,
author = {Jeffrey S. Chase and Henry M. Levy and Miche Baker-harvey and Edward D. Lazowska},
title = {How to Use a 64-Bit Virtual Address Space},
institution = {Department of Computer Science and Engineering, University of Washington},
year = {1992}
}
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Abstract
Most operating systems execute programs in private address spaces communicating through messages or files. The traditional private address space model was developed for 16- and 32-bit architectures, on which virtual addresses are a scarce resource. The recent appearance of architectures with flat 64-bit virtual addressing opens an opportunity to reconsider our use of virtual address spaces. In this paper we argue for an alternative addressing model, in which all programs and data reside in a single global virtual address space shared by multiple protection domains. Hardware-based memory protection exists within the single address space, providing firewalls as strong as in conventional systems. We explore the tradeoffs in the use of a global virtual address space relative to the private address space model. We contend that a shared address space can eliminate obstacles to efficient sharing and exchange of data structures that are inherent in private address space systems. The shared add...
