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Differential D55889

io_apic: Support APIC Extended Destination IDs
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Authored by cperciva on Mar 17 2026, 3:29 AM.
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Reviewers
kib
jhb
Commits
rG0ef872c9353e: io_apic: Support APIC Extended Destination IDs
rG02b20e538267: io_apic: Support APIC Extended Destination IDs
rGb0e1b1069d65: io_apic: Support APIC Extended Destination IDs
Summary

If APIC Extended Destination ID support is enabled, use it in APIC RTEs
by allowing APIC IDs up to 2^15 - 1 and encoding the high bits into
Intel "reserved" bits per the standard.

MFC after: 2 weeks
Sponsored by: Amazon

Diff Detail

Repository
rG FreeBSD src repository
Lint
Lint Skipped
Unit
Tests Skipped
Build Status
Buildable 71437
Build 68320: arc lint + arc unit

Event Timeline

cperciva created this revision.Mar 17 2026, 3:29 AM
Herald added a subscriber: imp. · View Herald TranscriptMar 17 2026, 3:29 AM
cperciva requested review of this revision.Mar 17 2026, 3:29 AM
Harbormaster completed remote builds in B71437: Diff 173778.Mar 17 2026, 3:29 AM
cperciva added a parent revision: D55426: msi: Support APIC Extended Destination IDs.Mar 17 2026, 3:57 AM
cperciva added a child revision: D55427: KVM: Detect Extended Destination ID support.
cperciva mentioned this in D55429: Xen: Detect Extended Destination ID support.Mar 17 2026, 4:06 AM
cperciva updated this revision to Diff 174057.Mar 21 2026, 12:03 AM

Use io_valid

Harbormaster completed remote builds in B71605: Diff 174057.Mar 21 2026, 12:03 AM
kib accepted this revision.Mar 28 2026, 12:29 AM
This revision is now accepted and ready to land.Mar 28 2026, 12:29 AM
Closed by commit rGb0e1b1069d65: io_apic: Support APIC Extended Destination IDs (authored by cperciva). · Explain WhyMar 28 2026, 5:56 AM
This revision was automatically updated to reflect the committed changes.
cperciva added a commit: rGb0e1b1069d65: io_apic: Support APIC Extended Destination IDs.
cperciva added a commit: rG02b20e538267: io_apic: Support APIC Extended Destination IDs.Apr 16 2026, 3:05 PM
cperciva added a commit: rG0ef872c9353e: io_apic: Support APIC Extended Destination IDs.Apr 16 2026, 3:12 PM

Revision Contents
Changeset List

PathSize
sys/
x86/
include/
1 line
x86/
9 lines

Diff 173778

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sys/x86/include/apicvar.h

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sys/x86/x86/io_apic.c

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