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From: mohta@necom830.cc.titech.ac.jp (Masataka Ohta)
Newsgroups: comp.unix.internals
Subject: Re: Fundamental defect of the concept of shared libraries
Message-ID: <216@titccy.cc.titech.ac.jp>
Date: 20 May 91 20:02:41 GMT
References: <MWM.91May17132439@raven.pa.dec.com> <213@titccy.cc.titech.ac.jp> <1991May20.090857@wsl.dec.com>
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Organization: Tokyo Institute of Technology
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In article <1991May20.090857@wsl.dec.com> mcnally@wsl.dec.com writes:

>|> You don't know about hardware enough. Because address translation is time
>|> consuming, fast cache is always indexed by virtual address. Thesedays,
>|> virtually indexed cache is quite common.

>|> So, if you want shared libraries, you can put it only on slower machines.

>How about MIPS R3000/R4000?  Maybe that's not fast enough.

The primary cache of R4000 is virtually indexed and physically tagged.
That is, it can't map different virtual addresses to a physical address.

							Masataka Ohta