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Date: Tue, 12 Mar 2013 22:35:16 -0700
From: Peter Grehan <grehan@freebsd.org>
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To: "Josias L.G." <josiaslg@bsd.com.br>
Subject: Re: 64bit - 32bit
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> Can i install and use a FreeBSD guest 32bit system ?.

  Technically possible, but not done currently. The user-space loader 
would have to be modified to set up register state for a 32-bit kernel, 
and there may be some additional work in the bhyve process if there are 
BIOS callbacks from the kernel.

later,

Peter.