arm64: Support counter access with E2H
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Authored by andrew on Jun 7 2024, 2:25 PM.

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rG10595e9b2f65: arm64: Support counter access with E2H
rG570fae59a8bf: arm64: Support counter access with E2H
rG997511dffe65: arm64: Support counter access with E2H

Summary

When entering the kernel with the E2H field set the layout of the
cnthctl_el2 register changes. Use the correct field locations to enable
access to the counter and timer registers from EL1.

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rG FreeBSD src repository

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Event Timeline

andrew created this revision.Jun 7 2024, 2:25 PM

Herald added a reviewer: manu. · View Herald TranscriptJun 7 2024, 2:25 PM

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

andrew requested review of this revision.Jun 7 2024, 2:25 PM

andrew added a parent revision: D45528: arm64: Ensure sctlr and pstate are in known states.

Harbormaster completed remote builds in B58102: Diff 139624.Jun 7 2024, 2:26 PM

andrew added a child revision: D45530: arm64: Fix the gicv3 check in locore.S.Jun 7 2024, 2:27 PM

This revision was not accepted when it landed; it landed in state Needs Review.Jul 23 2024, 9:52 AM

Closed by commit rG997511dffe65: arm64: Support counter access with E2H (authored by andrew). · Explain Why

This revision was automatically updated to reflect the committed changes.

andrew added a commit: rG997511dffe65: arm64: Support counter access with E2H.

andrew added a commit: rG570fae59a8bf: arm64: Support counter access with E2H.Mon, Sep 2, 8:51 AM

andrew added a commit: rG10595e9b2f65: arm64: Support counter access with E2H.Mon, Sep 2, 9:13 AM

Revision Contents
Changeset List

Path

Size

sys/

arm64/

locore.S

6 lines

include/

hypervisor.h

9 lines

Diff 141247

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sys/arm64/arm64/locore.S