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 8E44FC4450A for ; Sat, 18 Jul 2026 22:07:02 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists1p.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1wlDBG-00039n-6d; Sat, 18 Jul 2026 18:06:46 -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 1wlDBE-0002u9-7Y; Sat, 18 Jul 2026 18:06:44 -0400 Received: from pdx-out-003.esa.us-west-2.outbound.mail-perimeter.amazon.com ([44.246.68.102]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1wlDBC-0006GZ-CC; Sat, 18 Jul 2026 18:06:43 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazoncorp2; t=1784412402; x=1815948402; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=v7Gg0RTMoE3PHga7JOaBPxL+IE5NtvtLRm4f+QKNUWQ=; b=r5i3S6bEnvjlMfZQcQGi3B0VqdbUZzN3+FTBBMO5Pp9VZSoam9/kkYHc 8hFYboHcIeA+4NHdSxMWb22AWggSc/vm1lTESaIK8+fh7baKuKCMPt2Ne il2uhARFPgOOGL+ANtJ4MdfG61J23rfLG2/CBqKGVeo9XTIDnoUB3YPm+ 2M6y+/0wYIS7fUPc48KrDXEZ72HoAHYAknMSC8ekmax/XXtn1HBEqdlrB PcSY5zSvtmsxX8sGujqOu4zbV51q/6vwt2nMReFi/M9NMRB0Y9UEQBNiY OSxDwJQrF/N71C10oeFL+Y1Jve7RK9Ag8s4T+1rv0IjsZus5q5vpodeXU Q==; X-CSE-ConnectionGUID: U19EcyNiR4qGvGPOvW+lDA== X-CSE-MsgGUID: kST7DPDuTcyFgqZbsj8dig== X-IronPort-AV: E=Sophos;i="6.25,171,1779148800"; d="scan'208";a="23942435" 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-003.esa.us-west-2.outbound.mail-perimeter.amazon.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Jul 2026 22:06:38 +0000 Received: from EX19MTAUWC001.ant.amazon.com [205.251.233.105:20403] by smtpin.naws.us-west-2.prod.farcaster.email.amazon.dev [10.0.58.199:2525] with esmtp (Farcaster) id b648b38f-d09c-483b-bbcb-871a0b98d8b5; Sat, 18 Jul 2026 22:06:38 +0000 (UTC) X-Farcaster-Flow-ID: b648b38f-d09c-483b-bbcb-871a0b98d8b5 Received: from EX19D001UWA001.ant.amazon.com (10.13.138.214) by EX19MTAUWC001.ant.amazon.com (10.250.64.174) 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 22:06:38 +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 22:06:28 +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 106/137] system, backends: Give named memory regions an explicit owner Date: Sat, 18 Jul 2026 21:36:21 +0000 Message-ID: <20260718213652.37673-107-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=44.246.68.102; envelope-from=prvs=65292d44c=graf@amazon.de; helo=pdx-out-003.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-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org memory_map_init() creates the "system" and "io" root memory regions after qemu_create_machine() has instantiated current_machine, so qdev_get_machine() is available as owner. The IGVM backend creates guest-memory regions on behalf of the confidential-guest machine it carries in ctx->machine_state; use that as owner. subpage_init() and io_mem_init() pass name==NULL and thus never QOM-parent their MemoryRegion; leave owner NULL there. No functional change intended. AI-used-for: code (refactoring) Signed-off-by: Alexander Graf --- backends/igvm.c | 6 ++++-- system/physmem.c | 4 ++-- 2 files changed, 6 insertions(+), 4 deletions(-) diff --git a/backends/igvm.c b/backends/igvm.c index 80e87fe602..544a51b70e 100644 --- a/backends/igvm.c +++ b/backends/igvm.c @@ -256,13 +256,15 @@ static void *qigvm_prepare_memory(QIgvm *ctx, uint64_t addr, uint64_t size, igvm_pages = g_new0(MemoryRegion, 1); if (ctx->machine_state->cgs && ctx->machine_state->cgs->require_guest_memfd) { - if (!memory_region_init_ram_guest_memfd(igvm_pages, NULL, + if (!memory_region_init_ram_guest_memfd(igvm_pages, + OBJECT(ctx->machine_state), region_name, size, errp)) { g_free(igvm_pages); return NULL; } } else { - if (!memory_region_init_ram(igvm_pages, NULL, region_name, size, + if (!memory_region_init_ram(igvm_pages, OBJECT(ctx->machine_state), + region_name, size, errp)) { g_free(igvm_pages); return NULL; diff --git a/system/physmem.c b/system/physmem.c index c21ea92915..8466885994 100644 --- a/system/physmem.c +++ b/system/physmem.c @@ -3100,11 +3100,11 @@ static void memory_map_init(void) { system_memory = g_malloc(sizeof(*system_memory)); - memory_region_init(system_memory, NULL, "system", UINT64_MAX); + memory_region_init(system_memory, qdev_get_machine(), "system", UINT64_MAX); address_space_init(&address_space_memory, system_memory, "memory"); system_io = g_malloc(sizeof(*system_io)); - memory_region_init_io(system_io, NULL, &unassigned_io_ops, NULL, "io", + memory_region_init_io(system_io, qdev_get_machine(), &unassigned_io_ops, NULL, "io", 65536); address_space_init(&address_space_io, system_io, "I/O"); } -- 2.47.1