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 659A2C4450A for ; Sat, 18 Jul 2026 22:06:44 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists1p.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1wlDB9-0002Jj-Ch; Sat, 18 Jul 2026 18:06:39 -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 1wlDB4-0001ky-Li; Sat, 18 Jul 2026 18:06:34 -0400 Received: from pdx-out-005.esa.us-west-2.outbound.mail-perimeter.amazon.com ([52.13.214.179]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1wlDB2-0006Fa-QV; Sat, 18 Jul 2026 18:06:34 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazoncorp2; t=1784412392; x=1815948392; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=XlKYJHYIZUhyMDU2fWk1xdpYp67/NUuYdfIoCtufLrc=; b=el2ijtnHRM70MsjEoboAK+CQit86ez1ETNegz9beC+y5G+0pI7BW7u1h XxM9NG/6o5jsjXiJVYl7agumacdj5AQUkPNrwMKYhgbOyWzgOLOyuqfeu vfWoGl6R1SM0kFvpScjUViRGTEkhNA9JWbay2n+lbfJlFduW/G3FEtiF2 iW/QchcSkagbpA3S6keNXQ7It9kAaFkPk+ot9pKMj6nAaAn9deFz2T2BN jLkYk1fmuXNX+j81ZWH8dB0F5/iyDwz+sSCp0BT5V3EH1PZwdnJo0dnhE 0B0k4ilR0shg+bF1iy2Cc7E8lXCqytEPMkCG8xN2fyT+3mwOy5kzBJMRx w==; X-CSE-ConnectionGUID: P2eaODHESdqpjVqeKVB4JQ== X-CSE-MsgGUID: BuKzLw8bQZyLmomT7EkOWA== X-IronPort-AV: E=Sophos;i="6.25,171,1779148800"; d="scan'208";a="23904486" Received: from ip-10-5-0-115.us-west-2.compute.internal (HELO smtpout.naws.us-west-2.prod.farcaster.email.amazon.dev) ([10.5.0.115]) by internal-pdx-out-005.esa.us-west-2.outbound.mail-perimeter.amazon.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Jul 2026 22:06:28 +0000 Received: from EX19MTAUWA001.ant.amazon.com [205.251.233.182:24708] by smtpin.naws.us-west-2.prod.farcaster.email.amazon.dev [10.0.48.250:2525] with esmtp (Farcaster) id 77fc81c3-d29e-4682-887e-b70683a9c011; Sat, 18 Jul 2026 22:06:28 +0000 (UTC) X-Farcaster-Flow-ID: 77fc81c3-d29e-4682-887e-b70683a9c011 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, 18 Jul 2026 22:06:28 +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, 18 Jul 2026 22:06:18 +0000 From: Alexander Graf To: CC: , , , , Song Gao <17746591750@163.com>, Aditya Gupta , Alexey Kardashevskiy , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Farhan Ali , Alistair Francis , "Alistair Francis" , Antony Pavlov , Markus Armbruster , Artyom Tarasenko , BALATON Zoltan , Felipe Balbi , =?UTF-8?q?Daniel=20P=20=2E=20Berrang=C3=A9?= , 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 , Fabiano Rosas , 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 , Peter Xu , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , =?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 Subject: [RFC PATCH v2 105/137] hw/remote: Give memory regions an explicit owner Date: Sat, 18 Jul 2026 21:36:20 +0000 Message-ID: <20260718213652.37673-106-graf@amazon.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20260718213652.37673-1-graf@amazon.com> References: <20260711223707.42139-1-graf@amazon.com> <20260718213652.37673-1-graf@amazon.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [172.19.99.218] X-ClientProxiedBy: EX19D036UWB002.ant.amazon.com (10.13.139.139) To EX19D001UWA001.ant.amazon.com (10.13.138.214) Received-SPF: pass client-ip=52.13.214.179; envelope-from=prvs=65292d44c=graf@amazon.de; helo=pdx-out-005.esa.us-west-2.outbound.mail-perimeter.amazon.com X-Spam_score_int: -23 X-Spam_score: -2.4 X-Spam_bar: -- X-Spam_report: (-2.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HEADER_FROM_DIFFERENT_DOMAINS=0.25, 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 remote_machine_init() passes OBJECT(machine). remote_sysmem_reconfig() runs in the multi-process remote and creates system-memory subregions on behalf of the machine; use qdev_get_machine() as owner. dma_register() in the vfio-user server creates DMA windows for a VfuObject; use it as owner. No functional change intended. RAMBlock idstrs are unchanged: the owners added here are Machine or SysBus devices, and memory_region_register_ram() maps both to dev=NULL for qemu_ram_set_idstr(). AI-used-for: code (refactoring) Signed-off-by: Alexander Graf --- hw/remote/machine.c | 2 +- hw/remote/memory.c | 3 ++- hw/remote/vfio-user-obj.c | 2 +- 3 files changed, 4 insertions(+), 3 deletions(-) diff --git a/hw/remote/machine.c b/hw/remote/machine.c index e8e9cf259f..09154fa122 100644 --- a/hw/remote/machine.c +++ b/hw/remote/machine.c @@ -37,7 +37,7 @@ static void remote_machine_init(MachineState *machine) system_io = get_system_io(); pci_memory = g_new(MemoryRegion, 1); - memory_region_init(pci_memory, NULL, "pci", UINT64_MAX); + memory_region_init(pci_memory, OBJECT(machine), "pci", UINT64_MAX); rem_host = REMOTE_PCIHOST(qdev_new(OBJECT(s), "remote-pcihost", TYPE_REMOTE_PCIHOST)); diff --git a/hw/remote/memory.c b/hw/remote/memory.c index 8195aa5fb8..3f8fe54bac 100644 --- a/hw/remote/memory.c +++ b/hw/remote/memory.c @@ -12,6 +12,7 @@ #include "hw/remote/memory.h" #include "qapi/error.h" +#include "hw/core/qdev.h" static void remote_sysmem_reset(void) { @@ -42,7 +43,7 @@ void remote_sysmem_reconfig(MPQemuMsg *msg, Error **errp) for (region = 0; region < msg->num_fds; region++, suffix++) { g_autofree char *name = g_strdup_printf("remote-mem-%u", suffix); subregion = g_new(MemoryRegion, 1); - memory_region_init_ram_from_fd(subregion, NULL, + memory_region_init_ram_from_fd(subregion, qdev_get_machine(), name, sysmem_info->sizes[region], RAM_SHARED, msg->fds[region], sysmem_info->offsets[region], diff --git a/hw/remote/vfio-user-obj.c b/hw/remote/vfio-user-obj.c index 87fa7b6572..685d4c2baf 100644 --- a/hw/remote/vfio-user-obj.c +++ b/hw/remote/vfio-user-obj.c @@ -324,7 +324,7 @@ static void dma_register(vfu_ctx_t *vfu_ctx, vfu_dma_info_t *info) subregion = g_new0(MemoryRegion, 1); - memory_region_init_ram_ptr(subregion, NULL, name, + memory_region_init_ram_ptr(subregion, OBJECT(o), name, iov->iov_len, info->vaddr); dma_as = pci_device_iommu_address_space(o->pci_dev); -- 2.47.1