Device Drivers Swappable?

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#164

From: Timur Tabi
Date: Fri, 26 Apr 1996 00:00

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In message <4lof6l$n9e@cpcug.org> - kbennett@cpcug.org (Keith Bennett)25 Apr
1996 14:10:29 -0400 writes:
>Are device drivers swapped out when not in use or are they locked in
>memory?  We're trying to find out the cost (in RAM) of installing
>some network software.  If they get swapped out, there's no problem.
>If they don't, and the amount of memory they use is nontrivial, we
>need to consider being more selective about which machines get it.

The 1st code and 1st data segment are, by default, non-swappable.  After all,
that's where the ISR exists.  A driver can make its pages swappable, but it's
usually
easier to create a 2nd segment and move the non-critical code in there.

--
Timur "too sexy for my code" Tabi, timur@vnet.ibm.com
Architect, OS/2 Warp realtime MIDI subsystem
http://timur.austin.ibm.com (internal IBM only)
http://www.shirenet.com/~crusader/Timur (external)

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From: timur@vnet.ibm.com (Timur Tabi)
Subject: Device Drivers Swappable?
Date: 1996/04/26
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