Page 17 - slides.dvi

•
•
•
–
⇒
–
Operating
Still
push
Systems
Increases
servers
—
access
Alternative
Microkernel
some
may
both
interprocess
Structures
OS
be
kernel
&
via
structure:
Protection
services
modularity
Operating
privileged
system
Priv
S/W
H/W
into
communication
Unpriv
and
Mechanisms
(i.e.
App.
calls,
Server
(IPC)
Server
Systems
servers.
App.
but
Kernel
operate
Driver
Device
in
App.
need
Scheduler
extensibility.
schemes.
Server
Driver
Device
new
App.
kernel
way
to
mode).
access

servers:

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