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Subject: Re: Hardwired drivers are going away?
To: peter@horizon.com
Date: Tue, 15 Jan 2002 12:44:38 +0000 (GMT)
Cc: linux-kernel@vger.kernel.org
In-Reply-To: <20020115025840.11509.qmail@science.horizon.com> from "peter@horizon.com" at Jan 15, 2002 02:58:40 AM
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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
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> 1) The main kernel is contiguous in physical memory and is mapped with
>    large (4 MB) pages.  This reduces pressure on the TLB.  Modules are
> 2) Space for module code is allocated in page units.  Thus, each module
>    wastes an average of 2K.  If I'm going to have dozens of modules
>    loaded, small machines are going to notice.

If at boot time we keep a big chunk of ram free at the kernel end and just
load modules one after each other into that space until we get into real
paging that problem goes away
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