Re: [Qemu-devel] About qemu emulation speed (a question) and supported OS

[Mike Swanson]

Well, VMware guests can recognise that they're in a VM because the
software contains a backdoor INT function, mainly used by VMware Tools
for things like Shared Folders and host-controlled mouse cursors
insides guests. I don't quite remember what the function was for
VMware's backdoor, but you can find info at vmware's back:
http://chitchat.at.infoseek.co.jp/vmware/

-- 
Mike