From nobody Fri Dec 19 17:46:23 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=reject dis=none) header.from=unpredictable.fr ARC-Seal: i=1; a=rsa-sha256; t=1754636278; cv=none; d=zohomail.com; s=zohoarc; b=c0J9vSWomlZUgvVB6FHFgDVimNKaqninBGrhbZd6hleCY09+yjEdIbJqSHM8QxFjPROLvyR1ENL7w2PHywqC8Empa6yuzjx0Av5N3t2VWGvpMzQQtQMoIBwhQwaZ7rQAcLphHQsMoHQyEdILbfpP/7NnGHnBEq/b8VxyKvJafYw= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1754636278; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=tAMz6lMwfQrqOiME7sTBMz8prC5TBo0JdN8zol2zET4=; b=XpDDuDLebyCyp6CznThVsUImIq9cqaXDw8tVfmV+BD2BCc+Y/Pe7rw5i4kIGN2TD0ueG+gTIoooOnxO+2FrHZege34wkRsLdqeArhbJ92qd55AtVjhA7eoXCeJ9b4EGNpvVRkDRC5dBQYsP1StULzmmsHk12LQOAasEpJNiliBA= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=reject dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 17546362787011013.2155148388281; Thu, 7 Aug 2025 23:57:58 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ukH1j-0002cy-IO; Fri, 08 Aug 2025 02:56:36 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ukH0M-0001HQ-J5 for qemu-devel@nongnu.org; Fri, 08 Aug 2025 02:55:11 -0400 Received: from p-east3-cluster1-host8-snip4-10.eps.apple.com ([57.103.87.83] helo=outbound.qs.icloud.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ukH0K-000470-Nm for qemu-devel@nongnu.org; Fri, 08 Aug 2025 02:55:06 -0400 Received: from outbound.qs.icloud.com (unknown [127.0.0.2]) by p00-icloudmta-asmtp-us-east-2d-100-percent-10 (Postfix) with ESMTPS id 29FC91800110; Fri, 8 Aug 2025 06:55:00 +0000 (UTC) Received: from localhost.localdomain (qs-asmtp-me-k8s.p00.prod.me.com [17.57.155.37]) by p00-icloudmta-asmtp-us-east-2d-100-percent-10 (Postfix) with ESMTPSA id D77F91800117; Fri, 8 Aug 2025 06:54:56 +0000 (UTC) Dkim-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=unpredictable.fr; s=sig1; bh=tAMz6lMwfQrqOiME7sTBMz8prC5TBo0JdN8zol2zET4=; h=From:To:Subject:Date:Message-Id:MIME-Version:x-icloud-hme; b=Gbk5mDPPn/2MotbZqBLwn98WaNuc1IoyoTYVyLdzJYu8FacK+YP5zOq9jFBbx8vMCPXjNXUPwCeB5Pm4fkeTiEDyPgrXj1VjJq/7N9a/X39c4npkFXX3scXOS/wOFPJuaRVXJEoY97a8RNXpjlrNTxq/OzQTr+eTW7glJnBKJ8SOFDVNc9x/+bMw4pesydUTlKixSJgr78blRIL/BuvjmbnkRnyg85k0eg8ACVDaMG+3QshIC/B2GrdvgacwtC8gUYxjeU3dK2/momK+tbHo417Um+hoDyQv4hPlO5nqj1HYGKKTHEY0TQQTabNUrQZlJ6rUK+4hgOdTBxgVmnNAiQ== X-Client-IP: 46.189.47.18 From: Mohamed Mediouni To: qemu-devel@nongnu.org Cc: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Igor Mammedov , Richard Henderson , Roman Bolshakov , Phil Dennis-Jordan , Ani Sinha , "Michael S. Tsirkin" , Alexander Graf , Peter Maydell , Mads Ynddal , Sunil Muthuswamy , Zhao Liu , Marcel Apfelbaum , Eduardo Habkost , Cameron Esfahani , Paolo Bonzini , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , Shannon Zhao , Mohamed Mediouni , qemu-arm@nongnu.org, Yanan Wang , Pierrick Bouvier Subject: [PATCH v5 12/18] hw/arm: virt: cleanly fail on attempt to use the platform vGIC together with ITS Date: Fri, 8 Aug 2025 08:54:13 +0200 Message-Id: <20250808065419.47415-13-mohamed@unpredictable.fr> X-Mailer: git-send-email 2.39.5 (Apple Git-154) In-Reply-To: <20250808065419.47415-1-mohamed@unpredictable.fr> References: <20250808065419.47415-1-mohamed@unpredictable.fr> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Proofpoint-GUID: EYC1kpHbdBFqM53CyBXxOvEitx9dRAJp X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODA4MDA1NiBTYWx0ZWRfX+CxOYTCFPGKm qlofri66FgCstsxuaVnlxNCwTx8vLrF0GKOeKfYveY5MHwOWyIVhnIg/6d/202Q9P8g9nNFw/5f Lj6ousg3xlaNS7pHhSO5yiQ2Oub7Q2bXeIBlxHvW5x/u1Z9UDLNeAzzdtFAY/G0eDEP1vmhZjS2 TqxXG2axiNitNqq8YUAcYseRU8Kfn4Tc040IuXq0ZEQMK0iuNNQfikt0BiRRQus81z4ito0oa7R TztkDRMQruI5HRNhw6srHuFY4i7ypIcrqo7sS/XWPUYmAjAYAMQ7Zy6QHu2PdEaXmQmDKrrJ4= X-Proofpoint-ORIG-GUID: EYC1kpHbdBFqM53CyBXxOvEitx9dRAJp X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-08-08_01,2025-08-06_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 phishscore=0 mlxlogscore=999 suspectscore=0 malwarescore=0 spamscore=0 clxscore=1030 bulkscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.22.0-2506270000 definitions=main-2508080056 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=57.103.87.83; envelope-from=mohamed@unpredictable.fr; helo=outbound.qs.icloud.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @unpredictable.fr) X-ZM-MESSAGEID: 1754636282017124100 Content-Type: text/plain; charset="utf-8" Windows Hypervisor Platform's vGIC doesn't support ITS. Deal with this by reporting to the user and not creating the ITS device. Regular configuration: GICv3 + ITS Resulting configuration here: GICv3 with no MSIs And its=3Doff explicitly for the newest machine version: GICv3 + GICv2m Signed-off-by: Mohamed Mediouni Reviewed-by: Pierrick Bouvier --- hw/arm/virt.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/hw/arm/virt.c b/hw/arm/virt.c index 98a1c74c42..0039f6a12b 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -741,6 +741,16 @@ static void create_its(VirtMachineState *vms) return; } =20 + if (whpx_enabled() && vms->tcg_its) { + /* + * Signal to the user when ITS is neither supported by the host + * nor emulated by the machine. + */ + info_report("ITS not supported on WHPX."); + info_report("To support MSIs, use its=3Doff to enable GICv3 + GICv= 2m."); + return; + } + dev =3D qdev_new(its_class_name()); =20 object_property_set_link(OBJECT(dev), "parent-gicv3", OBJECT(vms->gic), --=20 2.39.5 (Apple Git-154)