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From: Jung-uk Kim <jkim@FreeBSD.org>
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Date: Mon, 8 Dec 2008 14:06:00 -0500
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Subject: Re: svn commit: r185772 - head/sys/kern
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On Monday 08 December 2008 01:39 pm, Jung-uk Kim wrote:
> Author: jkim
> Date: Mon Dec  8 18:39:59 2008
> New Revision: 185772
> URL: http://svn.freebsd.org/changeset/base/185772
>
> Log:
>   - Detect Bochs BIOS variants and use HZ_VM as well.
>   - Free kernel environment variable after its use.
>   - Fix style(9) nits.
>
> Modified:
>   head/sys/kern/subr_param.c

Recently QEMU added "firmware configuration" backdoor port to identify 
itself to host OS:

http://lists.gnu.org/archive/html/qemu-devel/2008-08/msg01231.html

We can add other guest architectures with it later.

FYI...

Jung-uk Kim