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2012 Mar 23
7
LWP Interrupt Handler
I am adding interrupt support for LWP, whose spec is available at
http://support.amd.com/us/Processor_TechDocs/43724.pdf. Basically OS can
specify an interrupt vector in LWP_CFG MSR; the interrupt will be
triggered when event buffer overflows. For HVM guests, I want to
re-inject this interrupt back into the guest VM. Here is one idea
similar to virtualized PMU: It first registers a special