From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists1p.gnu.org (lists1p.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4E147C43458 for ; Sat, 11 Jul 2026 22:41:16 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists1p.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1wigNT-0004ey-Pm; Sat, 11 Jul 2026 18:40:55 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1wigNQ-0004Q0-D4; Sat, 11 Jul 2026 18:40:52 -0400 Received: from pdx-out-013.esa.us-west-2.outbound.mail-perimeter.amazon.com ([34.218.115.239]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1wigNO-0005os-AX; Sat, 11 Jul 2026 18:40:52 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazoncorp2; t=1783809650; x=1815345650; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=ZLtpU6t0pkB0bJ724CMQihST0BRaAPM8GUkYNktSJgY=; b=aCFBKFS4xbAGNih85Hk9xnN0+ypOjafqjYpgvWmZcZ6WzIsrnPS3XMfX /5Kk5A0hF8V7dSKFn19Gh9oMWFtP9NSf8nCga+/hI43XC7j8lKVt9T/7U MI6YtBnRwuIgX/wdeNqHW2vSDyWk5Dz98fWalUvxEMTmwS6IsEJbZ/b5k Atn5bZoHrWGAz3oWXW3rmqoXvNtIPMw11LNhbhJwpV5CTIdwcKvGZ4cqE JiQ2MZp94P4jg8h57A9HTEs++9Eo6JMV/F4aHsaUOb9vfjy7Joi/isdCa H/SRttZFxHEdnDVuklKcSrrV6hcicMScOKoYa3teWWCW/LlK9a+eWWfZS g==; X-CSE-ConnectionGUID: wmjeqMWCR/CG0ag96zf8IA== X-CSE-MsgGUID: CBhn+ZQLROyDI1olWo342Q== X-IronPort-AV: E=Sophos;i="6.25,154,1779148800"; d="scan'208";a="23296563" Received: from ip-10-5-9-48.us-west-2.compute.internal (HELO smtpout.naws.us-west-2.prod.farcaster.email.amazon.dev) ([10.5.9.48]) by internal-pdx-out-013.esa.us-west-2.outbound.mail-perimeter.amazon.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Jul 2026 22:40:45 +0000 Received: from EX19MTAUWA001.ant.amazon.com [205.251.233.182:20728] by smtpin.naws.us-west-2.prod.farcaster.email.amazon.dev [10.0.51.175:2525] with esmtp (Farcaster) id ceb96b90-fa1d-4111-9117-20fc3f6abbc4; Sat, 11 Jul 2026 22:40:45 +0000 (UTC) X-Farcaster-Flow-ID: ceb96b90-fa1d-4111-9117-20fc3f6abbc4 Received: from EX19D001UWA001.ant.amazon.com (10.13.138.214) by EX19MTAUWA001.ant.amazon.com (10.250.64.217) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA) id 15.2.2562.43; Sat, 11 Jul 2026 22:40:45 +0000 Received: from ip-10-253-83-51.amazon.com (172.19.99.218) by EX19D001UWA001.ant.amazon.com (10.13.138.214) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA) id 15.2.2562.43; Sat, 11 Jul 2026 22:40:36 +0000 From: Alexander Graf To: CC: , , , , Song Gao <17746591750@163.com>, Aditya Gupta , Alexey Kardashevskiy , Farhan Ali , Alistair Francis , "Alistair Francis" , Antony Pavlov , Markus Armbruster , Artyom Tarasenko , BALATON Zoltan , Felipe Balbi , Christian Borntraeger , "Brian Cain" , Hendrik Brueckner , Chao Liu , "Huacai Chen" , =?UTF-8?q?Cl=C3=A9ment=20Chigot?= , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , Helge Deller , Dorjoy Chowdhury , "Edgar E . Iglesias" , Alexandre Iooss , Eric Farman , Francisco Iglesias , Gaurav Sharma , "Gautam Gala" , Harsh Prateek Bora , =?UTF-8?q?Herv=C3=A9=20Poussineau?= , Jan Kiszka , Max Filippov , Joel Stanley , Jared Rossi , Tyrone Ting , Frederic Konrad , "Laurent Vivier" , Manos Pitsidianakis , Bibo Mao , "Mark Cave-Ayland" , Glenn Miles , Matthew Rosato , "Michael Rolnik" , "Michael S . Tsirkin" , "Niek Linnenbank" , Nicholas Piggin , Palmer Dabbelt , Halil Pasic , "Paolo Bonzini" , Peter Maydell , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , "Pierrick Bouvier" , Richard Henderson , Sai Pavan Boddu , Samuel Tardieu , Bernhard Beschow , Stafford Horne , Sergio Lopez , "Subbaraya Sundeep" , Thomas Huth , "Ran Wang" , Hao Wu , =?UTF-8?q?Daniel=20P=20=2E=20Berrang=C3=A9?= Subject: [RFC PATCH 014/134] hw/nitro: Give onboard devices a QOM parent Date: Sat, 11 Jul 2026 22:35:07 +0000 Message-ID: <20260711223707.42139-15-graf@amazon.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20260711223707.42139-1-graf@amazon.com> References: <20260711223707.42139-1-graf@amazon.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [172.19.99.218] X-ClientProxiedBy: EX19D031UWC004.ant.amazon.com (10.13.139.246) To EX19D001UWA001.ant.amazon.com (10.13.138.214) Received-SPF: pass client-ip=34.218.115.239; envelope-from=prvs=645f258d4=graf@amazon.de; helo=pdx-out-013.esa.us-west-2.outbound.mail-perimeter.amazon.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.445, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HEADER_FROM_DIFFERENT_DOMAINS=0.249, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, T_SPF_PERMERROR=0.01, UNPARSEABLE_RELAY=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-arm@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-arm-bounces+qemu-arm=archiver.kernel.org@nongnu.org Sender: qemu-arm-bounces+qemu-arm=archiver.kernel.org@nongnu.org Convert the *_orphan() device-creation calls in hw/nitro to the new parented API introduced earlier in this series, so every onboard device gets a stable path in the composition tree instead of landing in /machine/unattached with an unstable device[N] name. The parent for each device is the object that owns its lifetime: the machine for board-created devices, the containing device for composite children. Names follow existing QOM conventions. Per-site rationale (reviewers: dispute the modeling here): file:line | parent | name | rationale machine.c:200 | OBJECT(bridge) | "heartbeat" | onboard heartbeat is a fixed child of the vsock bridge it plugs into; bridge owns its lifetime machine.c:212 | OBJECT(bridge) | "serial" | debug-mode serial-over-vsock is a fixed child of the same bridge nitro-vsock-bus.c:51 | ORPHAN-JUSTIFIED| - | bridge is parented immediately after via qdev_set_id() to /machine/peripheral/nitro-vsock; keep the orphan creator here Link: https://lore.kernel.org/qemu-devel/87jyr3w9tc.fsf@pond.sub.org/ Assisted-by: Kiro Signed-off-by: Alexander Graf --- hw/nitro/machine.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/hw/nitro/machine.c b/hw/nitro/machine.c index efcc2c8a3f..6b61de911f 100644 --- a/hw/nitro/machine.c +++ b/hw/nitro/machine.c @@ -195,10 +195,11 @@ static void nitro_machine_init(MachineState *machine) if (defaults_enabled()) { NitroVsockBridge *bridge = nitro_vsock_bridge_create(); + DeviceState *dev; /* Nitro Enclaves require a heartbeat device. Provide one. */ - qdev_realize(qdev_new_orphan(TYPE_NITRO_HEARTBEAT), - BUS(&bridge->bus), &error_fatal); + dev = qdev_new(OBJECT(bridge), "heartbeat", TYPE_NITRO_HEARTBEAT); + qdev_realize(dev, BUS(&bridge->bus), &error_fatal); /* * In debug mode, Nitro Enclaves expose the guest's serial output via @@ -209,8 +210,8 @@ static void nitro_machine_init(MachineState *machine) Chardev *chr = serial_hd(0); if (chr) { - DeviceState *dev = qdev_new_orphan(TYPE_NITRO_SERIAL_VSOCK); - + dev = qdev_new(OBJECT(bridge), "serial", + TYPE_NITRO_SERIAL_VSOCK); qdev_prop_set_chr(dev, "chardev", chr); qdev_realize(dev, BUS(&bridge->bus), &error_fatal); } -- 2.47.1