Re: MODULAR: Add support for load-time options

[Pavel Cahyna <pavel%NetBSD.org@localhost>]

On Sat, Feb 09, 2008 at 11:39:12PM +0000, Andrew Doran wrote:
> On the subject of version checks, right now NetBSD version numbers look
> something like the following:
> 
>       major.minor.patchlevel
> 
> My thinking is that if minor is 99 then it's a -current kernel/module and
> we'd call the entire version number signficant: if it differs in any way
> don't load the module. If a release branch then we'd check only major, or
> major+minor. I'm open to suggestions..

IMO we should have an ABI version number which would be not tied to
the version and would be incremented every time the ABI changes.

See http://mail-index.netbsd.org/tech-kern/2006/11/11/0004.html and
followups.

Continuing to use the version as ABI version and ignoring some of its
components on a release branch sound like a bad hack. Especially when we
had to break the ABI even on the release branch.

Pavel