Hi,
Is anyone interested in applying the approach talked about in the paper
to the Linux/ARM kernel? I would like to work on this task, and didn't
want to duplicate any efforts underway. Any feedback appreciated!
Thanks!
--
Kyle Mestery | StorageTek's Storage Networking Group
[EMAIL PROTECTED] | http://www.freebsd.org/
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On Fri, 30 Jul 1999, Adam 'WeirdArms' Wiggins wrote:
>
> For those of you interested.
>
> ---------- Forwarded message ----------
> Date: Fri, 30 Jul 1999 15:55:28 +1000 (EST)
> From: Andrew Taylor <[EMAIL PROTECTED]>
> To: [EMAIL PROTECTED]
> Subject: new UNSW CSE technical report
>
>
> UNSW Computer Science and Engineering Technical Report no. UNSW-CSE-TR-9906
> (20 pages: compressed postscript file 9906.ps.Z)
>
> Title: Fast Address-Space Switching on the StrongARM SA-1100 Processor
>
>
> Authors: Adam Wiggins, Gernot Heiser
> School of Computer Science and Engineering
> University of New South Wales
> Sydney 2052 Australia
> E-mail: {awiggins,gernot}@cse.unsw.edu.au
>
>
>
> Abstract:
>
> The StrongARM SA-1100 is a high-speed low-power processor aimed at
> embedded and portable applications. Its architecture features virtual
> caches and TLBs which are not tagged by an address-space
> identifier. Consequently, context switches on that processor are
> potentially very expensive, as they may require complete flushes of TLBs
> and caches.
>
> This report presents the design of an address-space management technique
> for the StrongARM which minimises TLB and cache flushes and thus
> context switching costs. The basic idea is to implement the top-level of
> the (hardware-walked) page-table as a cache for page directory entries
> for different address spaces. This allows switching address spaces with
> minimal overhead as long as the working sets do not overlap. For small
> (<=32MB) address spaces further improvements are possible by
> making use of the StrongARM's re-mapping facility. Our technique is
> discussed in the context of the L4 microkernel in which it will be
> implemented.
>
>
> ftp://ftp.cse.unsw.edu.au/pub/doc/papers/UNSW/9906.ps.Z
>
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>
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