From nobody Tue Feb 10 12:58:20 2026 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=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1689089815; cv=none; d=zohomail.com; s=zohoarc; b=OvyxfsdSVBKb6Mg4sVuiLZvfBIMcnNX6EAhNyLdlfEbSfxZrQ27V74E/9POq9KU7FfoVkt38PxNPWlYbLyb75QgLPzxsZtvU1oDCK4w2guaSXJ8/a/pWqOjn5BgXTUZhr7P4D4EgVRHVGjqr85erxiQ2cbVbi/SLKTjK+xSm03w= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1689089815; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=2uLwmFuTr/wAV/uBvTQzX96h8o4ZK3oUljwgdfMzvkU=; b=T9PilKXZsYG2yXyKtaxfnZ6t1OE8ndAu1Q4RX/+xeumU+L1vmWDAg33OVYK2qPzL3OHNkPvl39JezlKUfe5aUWLpoG1Tjc9w5e5T1rWsvvPf2hMvk8GqeG2XWoms6XgJe02TCJCsUvFD7eJ/gT7i2+O4ffPEDjoHzBVC38TtN/8= 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=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1689089815807675.826918634407; Tue, 11 Jul 2023 08:36:55 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qJFOb-0007vQ-0K; Tue, 11 Jul 2023 11:35:21 -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 1qJFOQ-0007rT-HT for qemu-devel@nongnu.org; Tue, 11 Jul 2023 11:35:11 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qJFON-0005oL-5g for qemu-devel@nongnu.org; Tue, 11 Jul 2023 11:35:08 -0400 Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-674-3Xp0wFMfPK2rPDz1P6Lddw-1; Tue, 11 Jul 2023 11:35:03 -0400 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.rdu2.redhat.com [10.11.54.8]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 935E41043AC9; Tue, 11 Jul 2023 15:35:02 +0000 (UTC) Received: from t14s.redhat.com (unknown [10.39.194.218]) by smtp.corp.redhat.com (Postfix) with ESMTP id 2A359C478DE; Tue, 11 Jul 2023 15:35:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1689089706; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=2uLwmFuTr/wAV/uBvTQzX96h8o4ZK3oUljwgdfMzvkU=; b=S2EZBFGICorZ+ZOoBrVO7iM+XdFck/rGn30yTGruSTacVISv5JhfOwyTzuqZyF88X/Q+p5 CHwpxxvSuDxEgW9Ct/LI9CGwY8vj1BZlZIzlRjFEqAXPd9qk7Zekq2C7Tdgg78OGe2b0yT O1wlXaQsV+LHndN3DeAJn7tICo9QCnk= X-MC-Unique: 3Xp0wFMfPK2rPDz1P6Lddw-1 From: David Hildenbrand To: qemu-devel@nongnu.org Cc: David Hildenbrand , Peter Maydell , Paolo Bonzini , Richard Henderson , Eduardo Habkost , "Michael S. Tsirkin" , Marcel Apfelbaum , Igor Mammedov , qemu-arm@nongnu.org, Gavin Shan , Mario Casquero Subject: [PATCH v4 5/7] virtio-md-pci: Support unplug requests for compatible devices Date: Tue, 11 Jul 2023 17:34:43 +0200 Message-ID: <20230711153445.514112-6-david@redhat.com> In-Reply-To: <20230711153445.514112-1-david@redhat.com> References: <20230711153445.514112-1-david@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.1 on 10.11.54.8 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=170.10.133.124; envelope-from=david@redhat.com; helo=us-smtp-delivery-124.mimecast.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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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: 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 @redhat.com) X-ZM-MESSAGEID: 1689089816860100003 Content-Type: text/plain; charset="utf-8" Let's support unplug requests for virtio-md-pci devices that provide a unplug_request_check() callback. We'll wire that up for virtio-mem-pci next. Tested-by: Mario Casquero Signed-off-by: David Hildenbrand --- hw/virtio/virtio-md-pci.c | 38 +++++++++++++++++++++++++++++-- include/hw/virtio/virtio-md-pci.h | 3 +++ 2 files changed, 39 insertions(+), 2 deletions(-) diff --git a/hw/virtio/virtio-md-pci.c b/hw/virtio/virtio-md-pci.c index a22a259e2d..62bfb7920b 100644 --- a/hw/virtio/virtio-md-pci.c +++ b/hw/virtio/virtio-md-pci.c @@ -69,8 +69,42 @@ void virtio_md_pci_plug(VirtIOMDPCI *vmd, MachineState *= ms, Error **errp) void virtio_md_pci_unplug_request(VirtIOMDPCI *vmd, MachineState *ms, Error **errp) { - /* We don't support hot unplug of virtio based memory devices */ - error_setg(errp, "virtio based memory devices cannot be unplugged."); + VirtIOMDPCIClass *vmdc =3D VIRTIO_MD_PCI_GET_CLASS(vmd); + DeviceState *dev =3D DEVICE(vmd); + HotplugHandler *bus_handler =3D qdev_get_bus_hotplug_handler(dev); + HotplugHandlerClass *hdc; + Error *local_err =3D NULL; + + if (!vmdc->unplug_request_check) { + error_setg(errp, "this virtio based memory devices cannot be unplu= gged"); + return; + } + + if (!bus_handler) { + error_setg(errp, "hotunplug of virtio based memory devices not" + "supported on this bus"); + return; + } + + vmdc->unplug_request_check(vmd, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + + /* + * Forward the async request or turn it into a sync request (handling = it + * like qdev_unplug()). + */ + hdc =3D HOTPLUG_HANDLER_GET_CLASS(bus_handler); + if (hdc->unplug_request) { + hotplug_handler_unplug_request(bus_handler, dev, &local_err); + } else { + virtio_md_pci_unplug(vmd, ms, &local_err); + if (!local_err) { + object_unparent(OBJECT(dev)); + } + } } =20 void virtio_md_pci_unplug(VirtIOMDPCI *vmd, MachineState *ms, Error **errp) diff --git a/include/hw/virtio/virtio-md-pci.h b/include/hw/virtio/virtio-m= d-pci.h index f9fa857aec..5912e16674 100644 --- a/include/hw/virtio/virtio-md-pci.h +++ b/include/hw/virtio/virtio-md-pci.h @@ -26,6 +26,9 @@ OBJECT_DECLARE_TYPE(VirtIOMDPCI, VirtIOMDPCIClass, VIRTIO= _MD_PCI) struct VirtIOMDPCIClass { /* private */ VirtioPCIClass parent; + + /* public */ + void (*unplug_request_check)(VirtIOMDPCI *vmd, Error **errp); }; =20 struct VirtIOMDPCI { --=20 2.41.0