The Mainframe and Virtualization - LRR
The Mainframe and Virtualization - LRR
The Mainframe and Virtualization - LRR
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IBM System z<br />
It‘s Business that Matters<br />
Hypervisor Technologies<br />
Direct Hardware method<br />
� Guest OS runs in privileged mode<br />
� Guest OS can be run unmodified, but can issue some hypervisor calls to improve<br />
performance or capability<br />
I/O (z/VM)<br />
Yield time slice (PR/SM TM <strong>and</strong> z/VM)<br />
� Extensive hardware assists for hypervisor (virtual processor dispatching, I/O<br />
pass-through, memory partitioning, etc.)<br />
� Used by System z (PR/SM TM <strong>and</strong> z/VM)<br />
14 IBM System z<br />
© 2007 IBM Corporation
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