Software Tuning, Performance Optimization & Platform Monitoring
Discussion regarding monitoring and software tuning methodologies, Performance Monitoring Unit (PMU) of Intel microprocessors, and platform updating.
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Redundancy of "Redirection hint indication" in SDM vol3, 10.11.1


In SDM vol3, 10.11.1, SDM says :

"Redirection hint indication (RH) — When this bit is set, the message is directed to the processor with the lowest interrupt priority among processors that can receive the interrupt."

If I want to send a msi with lowest interrupt priority mode, I just need to set Delivery Mode in MSI data register to 001B, so what's the meaning of the existance of RH in msi address register? 


[I had posted this question on , and forum manager told me to ask question here. so do not blame me on repost-questioning.]

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