tem manages power and does a lot of
things under the covers to maximize
battery life. Take away the operating
system’s direct link to the hardware,
and you lose the ability to effectively
manage battery life. That is a huge
blow to the value of the phone.
While you could migrate power
management (or the management
of any limited resource) of a mobile
phone operating system to a hypervisor, you would then be stretching the
definition of the traditional hypervisor
to something more like an operating
system of operating systems—
effectively, a very fat hypervisor.
neViLLe-neiL: It will probably not
happen near term, but it might happen on Android because it has gigahertz phones. Apple will never let a hypervisor execute on an iPhone.
toY: A sufficient solution might be
more like the Unix method of multiple
users. You would have one box with
multiple users logged in. Each user
has his or her own experience; all users run concurrently; and there is one
kernel and one operating system.
ReaLini: One of the biggest trends
in emerging markets is that users
have multiple SIM (subscriber iden-
tity module) chips in their pockets to
optimize the costs of their calls. Carri-
ers have different pricing to different
destinations, and users pick the chip
that minimizes cost for a specific call.
Effectively, they are creating multiple
profiles similar to what has been dis-
cussed, but instead of maximizing se-
curity, it’s minimizing charges. In In-
dia if a phone does not have dual SIM
chip modes to allow the user to change
personalities, it will not sell.
is a nonsharing
design, is the right
place to start