home *** CD-ROM | disk | FTP | other *** search
- Xref: sparky comp.sys.m68k:1377 comp.sys.sun.hardware:5720
- Path: sparky!uunet!auspex-gw!guy
- From: guy@Auspex.COM (Guy Harris)
- Newsgroups: comp.sys.m68k,comp.sys.sun.hardware
- Subject: Re: Speeding up SUN 3/60...
- Message-ID: <15551@auspex-gw.auspex.com>
- Date: 18 Nov 92 19:50:21 GMT
- References: <DERAADT.92Nov15001849@newt.newt.cuc.ab.ca> <BEAULIEU.92Nov16173907@piranha.bose.com> <DERAADT.92Nov17221841@newt.newt.cuc.ab.ca>
- Sender: news@auspex-gw.auspex.com
- Followup-To: comp.sys.m68k
- Organization: Auspex Systems, Santa Clara
- Lines: 9
- Nntp-Posting-Host: bootme.auspex.com
-
- >The kernel preloads the slots in the
- >IOMAPPER with virtual to physical translations. THAT's why a sun3x
- >kernel is so different.
-
- Err, that's *one* reason why it's so different. Another reason is, in
- fact, the MMU; the Sun-3x kernel has a quite different hat layer from the
- Sun-3 kernel (fortunately, most of the MMU-related changes are all
- buried in the hat layer; almost none of it leaks out to the
- machine-independent parts of the kernel).
-