From nobody Sat Mar 28 05:56:34 2026 X-Original-To: dev-commits-src-main@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 4fjRbQ4llwz6Xb4T for ; Sat, 28 Mar 2026 05:56:34 +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 4fjRbQ2pdPz3qKv for ; Sat, 28 Mar 2026 05:56:34 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1774677394; 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=uxU700cOgoBSgfQEpvHEWn0tJlbDlUJrx0Q8dl+vaRk=; b=BAEKendTmSIy+wLlGdeG8k+QQgqDIU/g0VcrLYXRuaPXOIoaE1qaS9qtx9OBs9C3musjiD SG+F+XAVB1EjInbnEbywn5RQnqxAuWbN4IVzApUlbSNUCFUItaM0M6fgWUtwKfDBUsvDNf UvVfkK65g4WinSQYUeGe41rcTWS6Z6EfRJdvOyQ5v5KniLxpgmrgxjSFFkywBUoaIILi2B NuzjrGVmsxw6LqAQK00K44YkTWpoK+neCb8WdVKUYI06/2cd8QxW3vl9fzkN/CoLkRBPZp b/zmMUcjeFT+rUY9j7W0w4b8aP3dfNR47PMp/+JjqNx7pGC2dNx+HeDirTguxg== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1774677394; a=rsa-sha256; cv=none; b=snfrhCZmAFPIBxvQ8/NvbWpls+35350o4UUaVD9dsKEsn2AX3xYwP5qV06S8HspT/y3o2b /mbOw/fraBdAtOle9yJHz+EUu1cNF9UbUZK2rZjbjU6jioMtrmS1pCo7X/GEQrFpbPXpgW rXlDmahQ0qOo6wnlL3PuThUfN4tzkac+7aSid0qYeYWs+JDEWM+L3OWpsuO3+2cM1FQeU9 Rl6z8Ooi5FKZs3zNz/TWxJOITAkiC/ABEdTXhotSBaSbQBxruSofWWgsPtFh8liM61AGxi OpCcsWzbxJe872PSbj0rioxtlK/gDjcd2jqi1oIEw5kDWVPe0OkRhUT9S4b8tA== 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=1774677394; 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=uxU700cOgoBSgfQEpvHEWn0tJlbDlUJrx0Q8dl+vaRk=; b=aD7/HMsBSZJDYXhkTiJ18BdqcdD71S8Caf2P1pJwdlzlV0hUT9zaoapBlLEtXj917cCR1R t0yx/lP5JURgTfm09FhKlY+jTePbrAxjtnVgxTjPOnLz1zXthu/h0XWZxrCPXXNt9iZd1K BnQtcoOuiz3TwOrRpJeCvscMN4/3zG9tnNz9YomfL1jAhWACgudfMElX0SQBaOVUBlaOxr Tb+ZV9nooIzKsg/TH97i0iNJCzWaKDtdMz5iwiHzNttMAhd7w0e7wcWhVTP9ncZ1rwqnqc PJGsB35EjQOFmAGTvScvu8v1S2reFDYTnMNcSSKBA0OGKeNkSbkz/jwtYgGWSQ== Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) by mxrelay.nyi.freebsd.org (Postfix) with ESMTP id 4fjRbQ2PD4z1CF1 for ; Sat, 28 Mar 2026 05:56:34 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from git (uid 1279) (envelope-from git@FreeBSD.org) id 3ffe5 by gitrepo.freebsd.org (DragonFly Mail Agent v0.13+ on gitrepo.freebsd.org); Sat, 28 Mar 2026 05:56:34 +0000 To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Colin Percival Subject: git: 9b18ba2c16a0 - main - Xen: Detect Extended Destination ID support List-Id: Commit messages for the main branch of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-main List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-main@freebsd.org Sender: owner-dev-commits-src-main@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/main X-Git-Reftype: branch X-Git-Commit: 9b18ba2c16a0750e6c78f348845368284ef1a704 Auto-Submitted: auto-generated Date: Sat, 28 Mar 2026 05:56:34 +0000 Message-Id: <69c76d92.3ffe5.4c948c4c@gitrepo.freebsd.org> The branch main has been updated by cperciva: URL: https://cgit.FreeBSD.org/src/commit/?id=9b18ba2c16a0750e6c78f348845368284ef1a704 commit 9b18ba2c16a0750e6c78f348845368284ef1a704 Author: Colin Percival AuthorDate: 2026-02-22 04:09:00 +0000 Commit: Colin Percival CommitDate: 2026-03-28 05:54:48 +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 --- 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 fb3b93e4164f..accdf853a174 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 @@ -2100,6 +2101,11 @@ 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)