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GET /api/1.0/patches/2219365/?format=api
{ "id": 2219365, "url": "http://patchwork.ozlabs.org/api/1.0/patches/2219365/?format=api", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/1.0/projects/14/?format=api", "name": "QEMU Development", "link_name": "qemu-devel", "list_id": "qemu-devel.nongnu.org", "list_email": "qemu-devel@nongnu.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20260402215629.745866-31-ruslichenko.r@gmail.com>", "date": "2026-04-02T21:56:15", "name": "[v3,30/33] hw/core/fdt_generic_util: Add deferred device initialization support", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "9349193745d59b34bc20fc7233f83271de88f382", "submitter": { "id": 92275, "url": "http://patchwork.ozlabs.org/api/1.0/people/92275/?format=api", "name": "Ruslan Ruslichenko", "email": "ruslichenko.r@gmail.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260402215629.745866-31-ruslichenko.r@gmail.com/mbox/", "series": [ { "id": 498555, "url": "http://patchwork.ozlabs.org/api/1.0/series/498555/?format=api", "date": "2026-04-02T21:55:47", "name": "hw/arm: Introduce generic FDT-driven machine", "version": 3, "mbox": "http://patchwork.ozlabs.org/series/498555/mbox/" } ], "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2219365/checks/", "tags": {}, "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=E3Qsigly;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; helo=lists.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=patchwork.ozlabs.org)" ], "Received": [ "from lists.gnu.org (lists.gnu.org [209.51.188.17])\n\t(using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fmwn45fBHz1yDH\n\tfor <incoming@patchwork.ozlabs.org>; Fri, 03 Apr 2026 09:02:00 +1100 (AEDT)", "from localhost ([::1] helo=lists1p.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from <qemu-devel-bounces@nongnu.org>)\n\tid 1w8Q3A-000137-Fv; Thu, 02 Apr 2026 17:58:04 -0400", "from eggs.gnu.org ([2001:470:142:3::10])\n by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from <ruslichenko.r@gmail.com>)\n id 1w8Q2m-0000IY-7F\n for qemu-devel@nongnu.org; Thu, 02 Apr 2026 17:57:40 -0400", "from mail-ej1-x632.google.com ([2a00:1450:4864:20::632])\n by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128)\n (Exim 4.90_1) (envelope-from <ruslichenko.r@gmail.com>)\n id 1w8Q2j-0007HS-Co\n for qemu-devel@nongnu.org; Thu, 02 Apr 2026 17:57:38 -0400", "by mail-ej1-x632.google.com with SMTP id\n a640c23a62f3a-b97f9587e6eso189496166b.3\n for <qemu-devel@nongnu.org>; Thu, 02 Apr 2026 14:57:36 -0700 (PDT)", "from thinkpad-t470s.. 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Iglesias\" <edgar.iglesias@gmail.com>,\n Ruslan_Ruslichenko@epam.com, balaton@eik.bme.hu", "Subject": "[PATCH v3 30/33] hw/core/fdt_generic_util: Add deferred device\n initialization support", "Date": "Thu, 2 Apr 2026 23:56:15 +0200", "Message-ID": "<20260402215629.745866-31-ruslichenko.r@gmail.com>", "X-Mailer": "git-send-email 2.43.0", "In-Reply-To": "<20260402215629.745866-1-ruslichenko.r@gmail.com>", "References": "<20260402215629.745866-1-ruslichenko.r@gmail.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Received-SPF": "pass client-ip=2a00:1450:4864:20::632;\n envelope-from=ruslichenko.r@gmail.com; helo=mail-ej1-x632.google.com", "X-Spam_score_int": "-20", "X-Spam_score": "-2.1", "X-Spam_bar": "--", "X-Spam_report": "(-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001,\n RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001,\n 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": "qemu development <qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<https://lists.nongnu.org/archive/html/qemu-devel>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org" }, "content": "From: Ruslan Ruslichenko <Ruslan_Ruslichenko@epam.com>\n\nAdd a mechanism to defer device initialization\nuntil after the main FDT traversal.\n\nThis introduces a deferred queue in FDTMachineInfo.\nDevices in this queue are processed in fdt_init_deferred(),\nwhich handles their realization, reset registration,\nand resource parsing (interrupts and memory regions).\n\nThis allows resolving initialization where devices need to\nbe realized on latest stages or outside of co-routine context.\n\nSigned-off-by: Ruslan Ruslichenko <Ruslan_Ruslichenko@epam.com>\n---\n hw/core/fdt_generic_util.c | 28 ++++++++++++++++++++++++++++\n include/hw/core/fdt_generic.h | 8 ++++++++\n 2 files changed, 36 insertions(+)", "diff": "diff --git a/hw/core/fdt_generic_util.c b/hw/core/fdt_generic_util.c\nindex c92b5c287b..ae54ada11d 100644\n--- a/hw/core/fdt_generic_util.c\n+++ b/hw/core/fdt_generic_util.c\n@@ -93,6 +93,13 @@ static bool qemu_irq_shared_or_handler(bool *inputs, int n)\n return false;\n }\n \n+static void fdt_parse_node_reg_prop(FDTMachineInfo *fdti, char *node_path,\n+ Object *dev);\n+static void fdt_parse_node_irq_prop(FDTMachineInfo *fdti, char *node_path,\n+ Object *dev);\n+static void fdt_init_device_realize(FDTMachineInfo *fdti, char *node_path,\n+ Object *dev);\n+\n static void qemu_irq_shared_handler(void *opaque, int n, int level)\n {\n QEMUIRQSharedState *s = opaque;\n@@ -162,6 +169,26 @@ static void fdt_init_cpu_clusters(FDTMachineInfo *fdti)\n }\n }\n \n+static void fdt_init_deferred(FDTMachineInfo *fdti)\n+{\n+ while (fdti->deferred) {\n+ FDTDeferredNode *dnode = fdti->deferred;\n+\n+ fdt_debug(\"FDT: Deferred realize node: %s\\n\",\n+ dnode->node_path);\n+\n+ fdt_init_device_realize(fdti, dnode->node_path, OBJECT(dnode->dev));\n+\n+ fdt_parse_node_reg_prop(fdti, dnode->node_path, OBJECT(dnode->dev));\n+\n+ fdt_parse_node_irq_prop(fdti, dnode->node_path, OBJECT(dnode->dev));\n+\n+ fdti->deferred = dnode->next;\n+ g_free(dnode->node_path);\n+ g_free(dnode);\n+ }\n+}\n+\n FDTMachineInfo *fdt_generic_create_machine(void *fdt, qemu_irq *cpu_irq)\n {\n FDTMachineInfo *fdti = fdt_init_new_fdti(fdt);\n@@ -175,6 +202,7 @@ FDTMachineInfo *fdt_generic_create_machine(void *fdt, qemu_irq *cpu_irq)\n while (qemu_co_enter_next(fdti->cq, NULL)) {\n ;\n }\n+ fdt_init_deferred(fdti);\n fdt_init_cpu_clusters(fdti);\n fdt_init_all_irqs(fdti);\n memory_region_transaction_commit();\ndiff --git a/include/hw/core/fdt_generic.h b/include/hw/core/fdt_generic.h\nindex 3961615a9c..2d507392fa 100644\n--- a/include/hw/core/fdt_generic.h\n+++ b/include/hw/core/fdt_generic.h\n@@ -35,6 +35,12 @@ typedef struct FDTIRQConnection {\n void *next;\n } FDTIRQConnection;\n \n+typedef struct FDTDeferredNode {\n+ DeviceState *dev;\n+ char *node_path;\n+ void *next;\n+} FDTDeferredNode;\n+\n typedef struct FDTMachineInfo {\n /* the fdt blob */\n void *fdt;\n@@ -48,6 +54,8 @@ typedef struct FDTMachineInfo {\n FDTIRQConnection *irqs;\n /* list of all CPU clusters */\n FDTCPUCluster *clusters;\n+ /* list of devices for deferred init */\n+ FDTDeferredNode *deferred;\n } FDTMachineInfo;\n \n /*\n", "prefixes": [ "v3", "30/33" ] }