bounded interrupt latencies

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We  ensure bounded  interrupt latencies  by  the standard
approach   of  introducing   a  few,   carefully  placed,
interrupt  points. On detection  of a  pending interrupt,
the kernel  explicitly returns through  the function call
stack to  the ker- nel/user boundary and  responds to the
interrupt.  It  then  restarts  the  original  operation,
including   reestablishing  all  the   preconditions  for
execution.  As a result,  we completely  avoid concurrent
execution in the kernel.

source :

Of The ACM


06/2010 vol.53 no.06

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