arm64: Use a fixed value for sctlr_el1
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Authored by andrew on Jun 24 2025, 2:27 PM.

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emaste

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manu

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arm64

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rG6ff9bb7c3bb0: arm64: Use a fixed value for sctlr_el1

Summary

We load a fixed value into sctlr_el1 in enter_kernel_el so there is no
need to clear and set fields. Replace with a fixed list of fields that
are set when the MMU is off an when it is on.

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rG FreeBSD src repository

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Event Timeline

andrew created this revision.Jun 24 2025, 2:27 PM

Herald added a reviewer: manu. · View Herald TranscriptJun 24 2025, 2:27 PM

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

andrew requested review of this revision.Jun 24 2025, 2:27 PM

Harbormaster completed remote builds in B65052: Diff 157520.Jun 24 2025, 2:27 PM

andrew added a child revision: D51012: arm64: Set the endian without a memory access.Jun 24 2025, 2:27 PM

This revision was not accepted when it landed; it landed in state Needs Review.Aug 6 2025, 5:38 PM

Closed by commit rG6ff9bb7c3bb0: arm64: Use a fixed value for sctlr_el1 (authored by andrew). · Explain Why

This revision was automatically updated to reflect the committed changes.

andrew added a commit: rG6ff9bb7c3bb0: arm64: Use a fixed value for sctlr_el1.

Revision Contents
Changeset List

Path

Size

sys/

arm64/

locore.S

23 lines

include/

armreg.h

20 lines

Diff 159888

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sys/arm64/arm64/locore.S