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bhyve: Implement MSR_MISC_FEATURES_ENABLES
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Authored by imp on Sep 16 2022, 4:30 PM.
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Details

Summary

Linux reads MISC_FEATURES_ENABLES to manage the CPUID faulting feature
(undocumented in the Intel SDM, but documented in 323850-004 (Intel
Virtualization Technology FlexMigration Application Note). Since bhyve
doesn't emulate this feature, we always return 0. Neither does bhyve
support the MONITOR/MWAIT fault bit also in this MSR (which is
documented in the sdm), so always return 0.

Sponsored by: Netflix

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