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Differential D55104

arm64: Panic if the ID register isn't known
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Authored by andrew on Wed, Feb 4, 5:27 PM.

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	Wed, Feb 4, 6:43 PM

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Summary

This will allow for callers to be simplified & not need to check the
return status.

Keep the return type for now so this can be MFCd without breaking the
KBI.

Sponsored by: Arm Ltd

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rG FreeBSD src repository

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Buildable 70401
Build 67284: arc lint + arc unit

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andrew created this revision.Wed, Feb 4, 5:27 PM

Herald added a reviewer: manu. · View Herald TranscriptWed, Feb 4, 5:27 PM

Herald added subscribers: emaste, imp. · View Herald Transcript

andrew requested review of this revision.Wed, Feb 4, 5:27 PM

Harbormaster completed remote builds in B70401: Diff 171157.Wed, Feb 4, 5:27 PM

andrew added a parent revision: D55103: arm64: Move creating the ID register views earlier.Wed, Feb 4, 5:27 PM

andrew added a child revision: D55105: arm64: Assume get_kernel_reg returns true.

Is this actually KBI or just internal KBI between kernel and vmm, which would always be in sync?

The only user of get_kernel_reg_iss_masked that I know about is vmm, however get_kernel_reg_iss is used via the get_kernel_reg macro in many places, see D55105 for the full list.

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arm64/

arm64/

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Diff 171157

sys/arm64/arm64/identcpu.c

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