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Differential D54855

powerpc: disable the TLBIE lock, it's not needed for POWER8
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Authored by adrian on Jan 24 2026, 2:58 AM.
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F163103745: D54855.id170509.diff
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alfredo
bdragon
imp
jhibbits
luporl

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Reviewers
jhibbits
Group Reviewers
PowerPC
Commits
rGefd7c55bade8: powerpc: disable the TLBIE lock, it's not needed for POWER8
rG0a45c8821d8e: powerpc: disable the TLBIE lock, it's not needed for POWER8
rG9a5baa9c5856: powerpc: disable the TLBIE lock, it's not needed for POWER8
Summary

According to POWER8_UM_v1.3_16MAR2016 3.8.3 Translation Lookaside
Buffer (TLB), POWER8 supports lockless TLBIE operations.

Locally Tested:

  • IBM POWER8 Revision 2.0, dual socket, 160 threads

Diff Detail

Repository
rG FreeBSD src repository
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Lint Not Applicable
Unit
Tests Not Applicable

Event Timeline

adrian created this revision.Jan 24 2026, 2:58 AM
Herald added subscribers: jhibbits, imp. · View Herald TranscriptJan 24 2026, 2:58 AM
adrian requested review of this revision.Jan 24 2026, 2:58 AM
Harbormaster completed remote builds in B70102: Diff 170319.Jan 24 2026, 2:58 AM
adrian added a parent revision: D54821: powerpc: add a best-effort SMP time base sync for G5's that need it.Jan 24 2026, 3:09 AM
adrian added reviewers: jhibbits, PowerPC.
adrian added a project: PowerPC.
Herald added subscribers: alfredo, luporl, bdragon. · View Herald TranscriptJan 24 2026, 3:10 AM
adrian updated this revision to Diff 170320.Jan 24 2026, 3:59 AM

don't duplicate the section, thanks ppl

Harbormaster completed remote builds in B70103: Diff 170320.Jan 24 2026, 3:59 AM
jhibbits accepted this revision.Jan 24 2026, 8:32 PM
This revision is now accepted and ready to land.Jan 24 2026, 8:32 PM
Closed by commit rG9a5baa9c5856: powerpc: disable the TLBIE lock, it's not needed for POWER8 (authored by adrian). · Explain WhyJan 27 2026, 4:40 AM
This revision was automatically updated to reflect the committed changes.
adrian added a commit: rG9a5baa9c5856: powerpc: disable the TLBIE lock, it's not needed for POWER8.
adrian added a commit: rG0a45c8821d8e: powerpc: disable the TLBIE lock, it's not needed for POWER8.Jan 30 2026, 5:03 AM
adrian added a commit: rGefd7c55bade8: powerpc: disable the TLBIE lock, it's not needed for POWER8.Jan 30 2026, 5:07 AM

Revision Contents
Changeset List

PathSize
sys/
powerpc/
aim/
5 lines

Diff 170509

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sys/powerpc/aim/moea64_native.c

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