arm64/vmm: Don't set MDSCR_KDE in the guest when single stepping
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Authored by markj on Wed, Feb 12, 3:32 PM.

Details

Reviewers

andrew
manu

Summary

It's not required, and causes the host to freeze when single-stepping a
guest, for reasons that I don't understand. The problem appeared only
after we started using VHE by default.

Diff Detail

Repository

rG FreeBSD src repository

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Lint Skipped

Unit

Tests Skipped

Build Status

Buildable 62396
Build 59280: arc lint + arc unit

Event Timeline

markj created this revision.Wed, Feb 12, 3:32 PM

Herald added a reviewer: manu. · View Herald TranscriptWed, Feb 12, 3:32 PM

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

Harbormaster completed remote builds in B62396: Diff 150909.Wed, Feb 12, 3:32 PM

markj requested review of this revision.Wed, Feb 12, 3:32 PM

markj added a parent revision: D48964: arm64: Add a sysctl to read the current exception level.

Revision Contents
Changeset List

Path

Size

sys/

arm64/

vmm/

vmm_arm64.c

9 lines

Diff 150909

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arm64/vmm: Don't set MDSCR_KDE in the guest when single steppingNeeds ReviewPublicActions