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arm64: disable the physical timer for now if HCR_EL2.E2H is set
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Authored by kevans on Mar 3 2023, 7:28 AM.
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Details

Summary

On some hardware, we can't clear HCR_EL2.E2H so accesses to the physical
timer hopelessly trap to EL2. Stash off the value of HCR_EL2 and use it
in has_hyp() to avoid this.

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Repository
rG FreeBSD src repository
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Unit
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Build Status
Buildable 50125
Build 47017: arc lint + arc unit

Event Timeline

kevans requested review of this revision.Mar 3 2023, 7:28 AM

Will also work with bhyve where we don't currently work with HCR_E2H on.

This revision is now accepted and ready to land.Mar 3 2023, 2:03 PM