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From: Ben Pfaff <blp@cs.stanford.edu>
Date: Mon, 13 Sep 2004 22:23:48 -0700
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Subject: [Qemu-devel] Re: Host API escape
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To: qemu-devel@nongnu.org

Derek Fawcus <dfawcus@cisco.com> writes:

> On Mon, Sep 13, 2004 at 10:43:00PM -0400, EricNorthup wrote:
>> What if you use the WRMSR instructions instead?  Then you can define
>> MSRs which have certain behavior when written to / read from.  The whole
>> point of MSRs is that they are model-specific, and that is the way to do
>> this compatibly.
>
> Hmm - a possibility.

For what it's worth, VMware products use a magic I/O port for
guest<->host communication according to
http://chitchat.at.infoseek.co.jp/vmware/backdoor.html
-- 
Ben Pfaff 
email: blp@cs.stanford.edu
web: http://benpfaff.org