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ARMv7 Generic Timers: Difference between revisions
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Virtual counter stream events
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CNTVCT is logically meant to be used by both '''secure''' and '''non-secure''' PL1 kernels. It can be read by PL2 hypervisors, but the usefulness of such a read is questionable, when they can instead read CNTPCT.
There is no statement about whether or not it can be accessed from PL3 monitors.
== Event Streams ==
Events can be triggered by the virtcounter through the use of the CNTKCTL register. You would set the bit position whose transition from 0=>1 or 1=>0 will trigger an event, and then enable the event. The design of this feature obviously means that virtcounter events can only be triggered on power-of-2 counter-values.
= Timers =
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