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I just needed a clarification on the EPT trait selection (vol 3b, 25.2.4 "EPT and Memory typing"). The spec suggests that MTRRs are not involved in the determination of the final memory type. Does this include the SMRR (system management range register) too ? Are the traits from SMRR ignored ? Thanks for your help.
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After searching around, I found a couple of threads that could provide some hints for your questions. Here are the two existing threads in this forum:
EPT: Strange VM-Exits
EPT write back memory type and Machine Check exception
-Thai

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