From nobody Thu Apr 16 15:04:31 2026 X-Original-To: dev-commits-src-all@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4fxLrv6qwZz6ZnxH for ; Thu, 16 Apr 2026 15:04:31 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R12" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4fxLrv3sNMz4JGS for ; Thu, 16 Apr 2026 15:04:31 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1776351871; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=B1YVRPEOD7f2nZF9kxb8c8yuuM1OKJV1UO00Nf24Nv4=; b=Rd4IKdPGPmgdqEIgrj8FqcrRxZg1Z/Z19squXjYP5jQsiKdy67iT/9PL5SBUFe0+EFWOYv ETRcLchbYIiA+fV27U40qgn95WNv4QP3VLHGU6MuGbWcW+bXf+hbwkXBwH1T4jHIAntbMo 8QYSdoCOGF+2RxgcDaOYjoNlRQ3aLiMqFgjGWDIRjyf6m/0Agwbx+I4KHi503XpJRMx0gF gr+dclBBnYeyUOvYD9HQfzyH/bD9eazbG5BI5AL1kQstD2Gber6/CpWrc77DqBn5SdnEsN px/xKy5Swzl1FLATMZtTptQ6oEtgP/V0WaXq1kCzEyN02GJXwdoLE0/g0431sg== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1776351871; a=rsa-sha256; cv=none; b=PUGZnWPUNhuXoDGYC2/+oXpG644dSkfKrQXInLIwJojyVw09rI7gUCwWa+89qU6+zvqsOY DcM2SNQDZ9wqOi8RQRS9w5G4BIRG+V2Ecyywq95STgIUv5radEL5PVLb8mpu0v9UQiofy5 IdIyXmQi552nQhQgKp1lVOV/L73HugWjfnHQIKRutc0WlovC/yHZdLT4fRYbXnFyoWD1tq 8nISo0lTlJZr60N3vUwTAH3YI5g8aLP8F9eODt8bKX5vCsRGuot8lVrc1wC5tt+Ot1u8dK 6nvZHoQLhS+El7hB+uLzaqcdY8HD505aJFKkT+6W9IXPeZgSLEmjuE/XCUD8BQ== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1776351871; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=B1YVRPEOD7f2nZF9kxb8c8yuuM1OKJV1UO00Nf24Nv4=; b=o9QkSk3KRXtfxaMj4p7Wcu/vyMyDdUTTgqUWX4dtwD07ieuIN+54WCLZJzYIN8iz4RBJJ3 etX47EzLZkuhEkk526Islm1s/X5YS+YOmFoEaK62auEyHkS/VReSFniXXFFsoo0iMQLPiw F7LcHgdHkcS+ObtLzHK3kxBdMQKtODZMzJLwbLSjxsk30gF3YxofA9wRWytiHjVH4X0dra 30EwkT5JMbxkdRXESljwVDm2YKNlFoTliZpH9KhO2EZVL/JR9Bf+7UxGuASc8qpGd4350o u1ufW0ZldxrJ15E8Df3tEYpIO9oxv/zl8RAbdGNoLqHsqNIv4M/zSNDRvYLHbg== Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) by mxrelay.nyi.freebsd.org (Postfix) with ESMTP id 4fxLrv3MrBz1BwR for ; Thu, 16 Apr 2026 15:04:31 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from git (uid 1279) (envelope-from git@FreeBSD.org) id 1a5f3 by gitrepo.freebsd.org (DragonFly Mail Agent v0.13+ on gitrepo.freebsd.org); Thu, 16 Apr 2026 15:04:31 +0000 To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Colin Percival Subject: git: d78de8bb7966 - stable/15 - Xen: Detect Extended Destination ID support List-Id: Commit messages for all branches of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-all List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-all@freebsd.org Sender: owner-dev-commits-src-all@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: cperciva X-Git-Repository: src X-Git-Refname: refs/heads/stable/15 X-Git-Reftype: branch X-Git-Commit: d78de8bb79667b97262e6b580865041e51db6204 Auto-Submitted: auto-generated Date: Thu, 16 Apr 2026 15:04:31 +0000 Message-Id: <69e0fa7f.1a5f3.3312478a@gitrepo.freebsd.org> The branch stable/15 has been updated by cperciva: URL: https://cgit.FreeBSD.org/src/commit/?id=d78de8bb79667b97262e6b580865041e51db6204 commit d78de8bb79667b97262e6b580865041e51db6204 Author: Colin Percival AuthorDate: 2026-02-22 04:09:00 +0000 Commit: Colin Percival CommitDate: 2026-04-16 15:03:59 +0000 Xen: Detect Extended Destination ID support Xen advertises support for the Extended Destination ID standard via bit 5 (aka XEN_HVM_CPUID_EXT_DEST_ID) of the value returned in the EAX register when Xen features are queried via CPUID. MFC after: 3 weeks Sponsored by: Amazon Differential Revision: https://reviews.freebsd.org/D55429 (cherry picked from commit 9b18ba2c16a0750e6c78f348845368284ef1a704) --- sys/x86/x86/local_apic.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/sys/x86/x86/local_apic.c b/sys/x86/x86/local_apic.c index ea5b14d92262..9bdf343886da 100644 --- a/sys/x86/x86/local_apic.c +++ b/sys/x86/x86/local_apic.c @@ -73,6 +73,7 @@ #include #include #include +#include #ifdef DDB #include @@ -2081,6 +2082,11 @@ detect_extended_dest_id(void) /* Check if we support extended destination IDs. */ switch (vm_guest) { + case VM_GUEST_XEN: + cpuid_count(hv_base + 4, 0, regs); + if (regs[0] & XEN_HVM_CPUID_EXT_DEST_ID) + apic_ext_dest_id = 1; + break; case VM_GUEST_KVM: kvm_cpuid_get_features(regs); if (regs[0] & KVM_FEATURE_MSI_EXT_DEST_ID)