Differential D25463

Create a kernel arm64 ID register view
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Authored by andrew on Jun 26 2020, 11:10 AM.

Details

Reviewers

manu

Group Reviewers

arm64

Commits

rS362777: Create a kernel arm64 ID register view

Summary

In preparation for using ifuncs in the kernel is is useful to have
a common view of the arm64 ID registers across all CPUs. Add this
and extract the logic for finding the lower value of two fields to
a new helper function.

Diff Detail

Repository

rS FreeBSD src repository - subversion

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Unit

Tests Not Applicable

Event Timeline

andrew created this revision.Jun 26 2020, 11:10 AM

Herald added a reviewer: manu. · View Herald TranscriptJun 26 2020, 11:10 AM

Herald added a subscriber: emaste. · View Herald Transcript

andrew requested review of this revision.Jun 26 2020, 11:10 AM

Harbormaster completed remote builds in B31972: Diff 73691.Jun 26 2020, 11:10 AM

andrew mentioned this in D25455: Add support for re-resolving arm64 ifuncs when all CPUs are online.Jun 26 2020, 11:12 AM

This revision was not accepted when it landed; it landed in state Needs Review.Jun 29 2020, 9:08 AM

Closed by commit rS362777: Create a kernel arm64 ID register view (authored by andrew). · Explain Why

This revision was automatically updated to reflect the committed changes.

andrew added a commit: rS362777: Create a kernel arm64 ID register view.

Herald added a subscriber: imp. · View Herald TranscriptJun 29 2020, 9:08 AM

Revision Contents
Changeset List

Path

Size

head/

sys/

arm64/

identcpu.c

111 lines

include/

undefined.h

3 lines

Diff 73869

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head/sys/arm64/arm64/identcpu.c