Bhyve: Detect Extended Destination ID support
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Authored by cperciva on Feb 22 2026, 4:11 AM.

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imp

Details

Reviewers

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Group Reviewers

bhyve

Summary

Bhyve advertises support for the Extended Destination ID standard via
bit 0 (aka CPUID_BHYVE_FEAT_EXT_DEST_ID) of the value returned in the
EAX register when Bhyve features are queried via CPUID.

MFC after: 2 weeks

Diff Detail

Repository

rG FreeBSD src repository

Lint

Lint Skipped

Unit

Tests Skipped

Build Status

Buildable 70870
Build 67753: arc lint + arc unit

Event Timeline

cperciva created this revision.Feb 22 2026, 4:11 AM

Herald added a subscriber: imp. · View Herald TranscriptFeb 22 2026, 4:11 AM

cperciva requested review of this revision.Feb 22 2026, 4:11 AM

Harbormaster completed remote builds in B70870: Diff 172430.Feb 22 2026, 4:11 AM

cperciva added a parent revision: D55430: vmm: Move defines from x86.c to x86/bhyve.h.Feb 22 2026, 4:11 AM

cperciva added a child revision: D55432: Hyper-V: Detect Extended Destination ID support.

cperciva added a reviewer: bhyve.Feb 22 2026, 4:15 AM

Only enable if ext_dest_id is set to -1.

Harbormaster completed remote builds in B70928: Diff 172540.Mon, Feb 23, 7:53 PM

Move detection code into local_apic.c

Harbormaster completed remote builds in B71442: Diff 173783.Tue, Mar 17, 4:00 AM

Revision Contents
Changeset List

Path

Size

sys/

x86/

msi.c

8 lines

Diff 172430

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Bhyve: Detect Extended Destination ID supportNeeds ReviewPublicActions