Article View: comp.unix.sysv286
Article #128Pagable Kernels (was: Re: Kernel Definition)
From: John F Haugh II
Date: Thu, 30 May 1991 11:43
Date: Thu, 30 May 1991 11:43
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In article <1991May29.201432.1803695@locus.com> richard@locus.com (Richard M. Mathews) writes: >You better hunt out each place where such assumptions are made, and >either temporarily pin down the pages you need or get a lock for the >appropiate resource. And then you better think about deadlock and >performance implications of keeping things pinned or locked. Note that the AIX v3 kernel is both pagable and pre-emptable, so you have the problems even if you pin the pages in memory. It is quite fun to discover that the resource you just fondled is at this very moment being altered by another process thread. All of the usual assumptions about "atomic" operations go straight out the window in this case. -- John F. Haugh II | Distribution to | UUCP: ...!cs.utexas.edu!rpp386!jfh Ma Bell: (512) 255-8251 | GEnie PROHIBITED :-) | Domain: jfh@rpp386.cactus.org "If liberals interpreted the 2nd Amendment the same way they interpret the rest of the Constitution, gun ownership would be mandatory."
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<1423@necis.UUCP> <1991May24.065316.27331@thunder.mcrcim.mcgill.edu> <19332@rpp386.cactus.org> <1991May29.201432.1803695@locus.com>Show Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!cs.utexas.edu!execu!sequoia!rpp386!jfh From: jfh@rpp386.cactus.org (John F Haugh II) Newsgroups: comp.unix.sysv286,comp.unix.sysv386,comp.unix.xenix.misc,comp.unix.xenix.sco,comp.unix.wizards Subject: Pagable Kernels (was: Re: Kernel Definition) Message-ID: <19342@rpp386.cactus.org> Date: 30 May 91 11:43:46 GMT References: <1423@necis.UUCP> <1991May24.065316.27331@thunder.mcrcim.mcgill.edu> <19332@rpp386.cactus.org> <1991May29.201432.1803695@locus.com> Reply-To: jfh@rpp386.cactus.org (John F Haugh II) Organization: Lone Star Cat Emporium and BBQ Grill Lines: 17 X-Clever-Slogan: Help Prevent Robbery. Tax the IRS.