hwpmc: handle delayed IBS NMIs on Zen 6
Needs ReviewPublic
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Authored by afscoelho_gmail.com on Mon, Oct 5, 2:50 PM.

Details

Reviewers

gnn
ali_mashtizadeh.com
mhorne

Summary

On Zen 6, an extra IBS NMI can arrive after later samples.
Keep the credit until the empty NMI arrives, and handle fetch and op samples when both are ready.

Test Plan

Ran the workload 34 times on Zen 6; no unknown NMIs.

Diff Detail

Repository

rG FreeBSD src repository

Lint

Lint Passed

Unit

No Test Coverage

Build Status

Buildable 77730
Build 74613: arc lint + arc unit

Event Timeline

afscoelho_gmail.com created this revision.Mon, Oct 5, 2:50 PM

Herald added a reviewer: gnn. · View Herald TranscriptMon, Oct 5, 2:50 PM

Herald added a reviewer: ali_mashtizadeh.com. · View Herald Transcript

Herald added a subscriber: imp. · View Herald Transcript

afscoelho_gmail.com requested review of this revision.Mon, Oct 5, 2:50 PM

Harbormaster completed remote builds in B77719: Diff 188720.Mon, Oct 5, 2:50 PM

afscoelho_gmail.com added a reviewer: mhorne.Mon, Oct 5, 4:19 PM

Needs rebase on top of D60004? (merged)

afscoelho_gmail.com updated this revision to Diff 188738.Mon, Oct 5, 5:52 PM

Harbormaster completed remote builds in B77730: Diff 188738.Mon, Oct 5, 5:52 PM

Thanks for the note! I rebased this on top of D60004 and uploaded Diff. The updated diff is focused on the Zen 6 delayed NMI handling.

Revision Contents
Changeset List

Path

Size

sys/

dev/

hwpmc/

hwpmc_ibs.c

16 lines

Diff 188738

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hwpmc: handle delayed IBS NMIs on Zen 6Needs ReviewPublicActions