arm64: Add FEAT_BRBE register fields
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Authored by sarah.walker2_arm.com on Jul 29 2026, 3:37 PM.

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Referenced Files

	F177354770: D58533.1794181845.diff
	Sat, Nov 7, 11:50 PM

Subscribers

emaste

imp

Details

Reviewers

andrew
manu

Summary

The Arm Branch Record Buffer Extension (BRBE) is an optional extension added
in Armv9.2 to provide control path history sampling.

Diff Detail

Repository

rG FreeBSD src repository

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Build Status

Buildable 75264
Build 72147: arc lint + arc unit

Event Timeline

sarah.walker2_arm.com created this revision.Jul 29 2026, 3:37 PM

Herald added a reviewer: andrew. · View Herald TranscriptJul 29 2026, 3:37 PM

Herald added a reviewer: andrew. · View Herald Transcript

Herald added a reviewer: manu. · View Herald Transcript

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

sarah.walker2_arm.com requested review of this revision.Jul 29 2026, 3:37 PM

Harbormaster completed remote builds in B75264: Diff 183034.Jul 29 2026, 3:37 PM

sarah.walker2_arm.com added a child revision: D58534: dev/hwpmc: Add interrupt callback for arm64.Jul 29 2026, 3:37 PM

andrew accepted this revision.Thu, Nov 5, 11:23 AM

This revision is now accepted and ready to land.Thu, Nov 5, 11:23 AM

andrew added inline comments.Fri, Nov 6, 3:23 PM

sys/arm64/include/armreg.h
257	Should there be definition for `MRS_REG_ALT_NAME_n`?

Revision Contents
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Path

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sys/

arm64/

include/

armreg.h

182 lines

Diff 183034

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sys/arm64/include/armreg.h

arm64: Add FEAT_BRBE register fieldsAcceptedPublicActions