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hwpmc/arm64: Support the kernel booting to VHE
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Authored by andrew on Jun 7 2024, 2:25 PM.
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Summary

When booting to VHE we need to handle using the PMU at either EL1 or
EL2. WE already support EL1 so add support for EL2.

Sponsored by: Arm Ltd

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rG FreeBSD src repository
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