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 lists.gnu.org (lists.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 5CAB7CA0EE4 for ; Wed, 20 Aug 2025 19:57:23 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uoovV-00011X-24; Wed, 20 Aug 2025 15:56:53 -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 1uoovO-00011B-5J for qemu-devel@nongnu.org; Wed, 20 Aug 2025 15:56:47 -0400 Received: from mail-wr1-x42e.google.com ([2a00:1450:4864:20::42e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1uoovM-0001iY-3b for qemu-devel@nongnu.org; Wed, 20 Aug 2025 15:56:45 -0400 Received: by mail-wr1-x42e.google.com with SMTP id ffacd0b85a97d-3b9edf0e4efso169563f8f.2 for ; Wed, 20 Aug 2025 12:56:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1755719802; x=1756324602; darn=nongnu.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=SUCwqd44Qvcng06lI8Kd9VZpkd8nFai0eG7YBGJxu6A=; b=MyblF2NpFzY7QPxhUgHdRefPS15iKAjSIlujE5P8cNrej/BGpy4iQ66ng6SjhZEZ7e Q9ncLYvJFil1b9Wh8Dk9gJE6yXcOv0JG2Z93VLZA0HDTdhCGDpVwIkW1Y0R3VWada3Kp JDsrUf+GIMwXOLva/0/bWFdO2f70ixbtcI8CO5YjOWI0npVReEEx/BqwRCIAntC/YyTD lTxSGU7w3n3ns2gH0IC/HPj0CxWnv6C5sMhiSwK0BfvZNU06fDZkPfpAU4iJgzgo8Uzf Ym9yZd3uYHx5D05pyp/Cg5QxQ5ksrfIJKBAt5418rb133LJ2pS6x2OxoIIcUQ3kPL5Mk mpxw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1755719802; x=1756324602; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=SUCwqd44Qvcng06lI8Kd9VZpkd8nFai0eG7YBGJxu6A=; b=DrSgRMEC2MkX/3faoJERL90w7vScREhDYL4rD08NrD5qhHxF3n2uuFdQBWbJcicRn5 6QwbnpIFh3xyIw14T27hAxVSSMMwGwV4kEOW3aYxZ5XJBbN+NtjEEVThhKtNGY16fFlJ Knggej/p0GN/BS/9aFKgrVDmIVc948PVlT+G1E590pcF1qJTGaQPtPIwaw5OwS+vxeZK zFhSDuyb6tLyXPCg8b294T+NG/7Fdj8t+QWUwSsel5Gb7edLPJJ79Xo2FW6B156pfQpm z+kOMykhjUQ7IEnJR2Uul7kcsCGv+I2AIY5qCGGlHLK86N0yLLDCwXbhqAhQfM/PBCif Ex1w== X-Gm-Message-State: AOJu0YyguynDw4HNzau7+IdgkQ2JWr+hqlZQlNRjvaVZY+ZVX1JIw1r7 28QYp8byPvjzhospFR+5JMks908HWusvY2ZgGYGmukF1t5TpT4gKt2T1QnbiakIe0nY= X-Gm-Gg: ASbGncvVXKZI/ZjuLzFqIopXTxAljEMnM3j5I5lauVX3tzIaiV87deO0oFjALwMlQHj VDZU6gVvvL/npE1MH9CRC9xPUStjxMSQVJrItbtHGZyJreWA+sCX8nfM3Plnv2ZGEYxnB5HA5S0 b+CIZNwMUEsOTIXxEcS6pXQazcRP6J9k1ZSvqLF7AReXA8aBVRwbkib0QBSl+KvOB832B+uqJmI At32ZnGZA43pzmUfIZ5rwyCoREY84MZxZT+gpar1E4ajK9fUI4GG9t8suK0W0JaLpV5A43ItxRN 3QwQUFB9wWjjcW2ZSntc+HojFtpchk7lD8Y/VkLCa+PPHl+g20jbfErm8hg8T42obj8kLhTNwsm KmbVnAe22YxYB6/92eYBXDLs= X-Google-Smtp-Source: AGHT+IGDZdZRUFWjAgiYhJvErSFqRNbD927CciZx5N8I4uk6mZtPvymlkqA/n3K4NN5aSwJ2gCm6fQ== X-Received: by 2002:a05:6000:290d:b0:3b7:9ae1:eb9 with SMTP id ffacd0b85a97d-3c4953a804cmr61327f8f.23.1755719801761; Wed, 20 Aug 2025 12:56:41 -0700 (PDT) Received: from draig.lan ([185.126.160.19]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3c074d439adsm8950064f8f.21.2025.08.20.12.56.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 20 Aug 2025 12:56:40 -0700 (PDT) Received: from draig.lan (localhost [IPv6:::1]) by draig.lan (Postfix) with ESMTP id 1C2CC5F898; Wed, 20 Aug 2025 20:56:40 +0100 (BST) From: =?UTF-8?q?Alex=20Benn=C3=A9e?= To: qemu-devel@nongnu.org Cc: =?UTF-8?q?Alex=20Benn=C3=A9e?= , "Michael S. Tsirkin" , Stefano Garzarella , Paolo Bonzini Subject: [RFC PATCH] hw/virtio: rename vhost-user-device and make user creatable Date: Wed, 20 Aug 2025 20:56:32 +0100 Message-ID: <20250820195632.1956795-1-alex.bennee@linaro.org> X-Mailer: git-send-email 2.47.2 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::42e; envelope-from=alex.bennee@linaro.org; helo=mail-wr1-x42e.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, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-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: 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 We didn't make the device user creatable in the first place because we were worried users might get confused. Rename the device to make its nature as a test device even more explicit. While we are at it add a Kconfig variable so it can be skipped for those that want to thin out their build configuration even further. Signed-off-by: Alex Bennée --- docs/system/devices/vhost-user.rst | 20 +++++++------------ include/hw/virtio/vhost-user-base.h | 2 +- ...ice-pci.c => vhost-user-test-device-pci.c} | 17 +++++++--------- ...user-device.c => vhost-user-test-device.c} | 9 +++------ hw/virtio/Kconfig | 5 +++++ hw/virtio/meson.build | 5 +++-- 6 files changed, 26 insertions(+), 32 deletions(-) rename hw/virtio/{vhost-user-device-pci.c => vhost-user-test-device-pci.c} (77%) rename hw/virtio/{vhost-user-device.c => vhost-user-test-device.c} (87%) diff --git a/docs/system/devices/vhost-user.rst b/docs/system/devices/vhost-user.rst index 35259d8ec7c..bddf8df5ed5 100644 --- a/docs/system/devices/vhost-user.rst +++ b/docs/system/devices/vhost-user.rst @@ -62,26 +62,20 @@ platform details for what sort of virtio bus to use. The referenced *daemons* are not exhaustive, any conforming backend implementing the device and using the vhost-user protocol should work. -vhost-user-device -^^^^^^^^^^^^^^^^^ +vhost-user-test-device +^^^^^^^^^^^^^^^^^^^^^^ -The vhost-user-device is a generic development device intended for -expert use while developing new backends. The user needs to specify -all the required parameters including: +The vhost-user-test-device is a generic development device intended +for expert use while developing new backends. The user needs to +specify all the required parameters including: - Device ``virtio-id`` - The ``num_vqs`` it needs and their ``vq_size`` - The ``config_size`` if needed .. note:: - To prevent user confusion you cannot currently instantiate - vhost-user-device without first patching out:: - - /* Reason: stop inexperienced users confusing themselves */ - dc->user_creatable = false; - - in ``vhost-user-device.c`` and ``vhost-user-device-pci.c`` file and - rebuilding. + While this is a useful device for development it is not recommended + for production use. vhost-user daemon ================= diff --git a/include/hw/virtio/vhost-user-base.h b/include/hw/virtio/vhost-user-base.h index 51d0968b893..387e434b804 100644 --- a/include/hw/virtio/vhost-user-base.h +++ b/include/hw/virtio/vhost-user-base.h @@ -44,6 +44,6 @@ struct VHostUserBaseClass { }; -#define TYPE_VHOST_USER_DEVICE "vhost-user-device" +#define TYPE_VHOST_USER_TEST_DEVICE "vhost-user-test-device" #endif /* QEMU_VHOST_USER_BASE_H */ diff --git a/hw/virtio/vhost-user-device-pci.c b/hw/virtio/vhost-user-test-device-pci.c similarity index 77% rename from hw/virtio/vhost-user-device-pci.c rename to hw/virtio/vhost-user-test-device-pci.c index f10bac874e7..d6a9ca2101d 100644 --- a/hw/virtio/vhost-user-device-pci.c +++ b/hw/virtio/vhost-user-test-device-pci.c @@ -18,13 +18,13 @@ struct VHostUserDevicePCI { VHostUserBase vub; }; -#define TYPE_VHOST_USER_DEVICE_PCI "vhost-user-device-pci-base" +#define TYPE_VHOST_USER_TEST_DEVICE_PCI "vhost-user-test-device-pci" -OBJECT_DECLARE_SIMPLE_TYPE(VHostUserDevicePCI, VHOST_USER_DEVICE_PCI) +OBJECT_DECLARE_SIMPLE_TYPE(VHostUserDevicePCI, VHOST_USER_TEST_DEVICE_PCI) static void vhost_user_device_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp) { - VHostUserDevicePCI *dev = VHOST_USER_DEVICE_PCI(vpci_dev); + VHostUserDevicePCI *dev = VHOST_USER_TEST_DEVICE_PCI(vpci_dev); DeviceState *vdev = DEVICE(&dev->vub); vpci_dev->nvectors = 1; @@ -38,9 +38,6 @@ static void vhost_user_device_pci_class_init(ObjectClass *klass, VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); - /* Reason: stop users confusing themselves */ - dc->user_creatable = false; - k->realize = vhost_user_device_pci_realize; set_bit(DEVICE_CATEGORY_INPUT, dc->categories); pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; @@ -51,15 +48,15 @@ static void vhost_user_device_pci_class_init(ObjectClass *klass, static void vhost_user_device_pci_instance_init(Object *obj) { - VHostUserDevicePCI *dev = VHOST_USER_DEVICE_PCI(obj); + VHostUserDevicePCI *dev = VHOST_USER_TEST_DEVICE_PCI(obj); virtio_instance_init_common(obj, &dev->vub, sizeof(dev->vub), - TYPE_VHOST_USER_DEVICE); + TYPE_VHOST_USER_TEST_DEVICE); } static const VirtioPCIDeviceTypeInfo vhost_user_device_pci_info = { - .base_name = TYPE_VHOST_USER_DEVICE_PCI, - .non_transitional_name = "vhost-user-device-pci", + .base_name = TYPE_VHOST_USER_TEST_DEVICE_PCI, + .non_transitional_name = "vhost-user-test-device-pci", .instance_size = sizeof(VHostUserDevicePCI), .instance_init = vhost_user_device_pci_instance_init, .class_init = vhost_user_device_pci_class_init, diff --git a/hw/virtio/vhost-user-device.c b/hw/virtio/vhost-user-test-device.c similarity index 87% rename from hw/virtio/vhost-user-device.c rename to hw/virtio/vhost-user-test-device.c index 3939bdf7552..1b98ea3e488 100644 --- a/hw/virtio/vhost-user-device.c +++ b/hw/virtio/vhost-user-test-device.c @@ -1,5 +1,5 @@ /* - * Generic vhost-user-device implementation for any vhost-user-backend + * Generic vhost-user-test-device implementation for any vhost-user-backend * * This is a concrete implementation of vhost-user-base which can be * configured via properties. It is useful for development and @@ -25,7 +25,7 @@ */ static const VMStateDescription vud_vmstate = { - .name = "vhost-user-device", + .name = "vhost-user-test-device", .unmigratable = 1, }; @@ -41,16 +41,13 @@ static void vud_class_init(ObjectClass *klass, const void *data) { DeviceClass *dc = DEVICE_CLASS(klass); - /* Reason: stop inexperienced users confusing themselves */ - dc->user_creatable = false; - device_class_set_props(dc, vud_properties); dc->vmsd = &vud_vmstate; set_bit(DEVICE_CATEGORY_INPUT, dc->categories); } static const TypeInfo vud_info = { - .name = TYPE_VHOST_USER_DEVICE, + .name = TYPE_VHOST_USER_TEST_DEVICE, .parent = TYPE_VHOST_USER_BASE, .class_init = vud_class_init, }; diff --git a/hw/virtio/Kconfig b/hw/virtio/Kconfig index 7648a2d68da..10f5c53ac09 100644 --- a/hw/virtio/Kconfig +++ b/hw/virtio/Kconfig @@ -126,3 +126,8 @@ config VHOST_USER_SCMI bool default y depends on VIRTIO && VHOST_USER && ARM + +config VHOST_USER_TEST + bool + default y + depends on VIRTIO && VHOST_USER diff --git a/hw/virtio/meson.build b/hw/virtio/meson.build index 3ea7b3cec83..48b9fedfa56 100644 --- a/hw/virtio/meson.build +++ b/hw/virtio/meson.build @@ -22,7 +22,7 @@ if have_vhost system_virtio_ss.add(files('vhost-user-base.c')) # MMIO Stubs - system_virtio_ss.add(files('vhost-user-device.c')) + system_virtio_ss.add(when: 'CONFIG_VHOST_USER_TEST', if_true: files('vhost-user-test-device.c')) system_virtio_ss.add(when: 'CONFIG_VHOST_USER_GPIO', if_true: files('vhost-user-gpio.c')) system_virtio_ss.add(when: 'CONFIG_VHOST_USER_I2C', if_true: files('vhost-user-i2c.c')) system_virtio_ss.add(when: 'CONFIG_VHOST_USER_RNG', if_true: files('vhost-user-rng.c')) @@ -30,7 +30,8 @@ if have_vhost system_virtio_ss.add(when: 'CONFIG_VHOST_USER_INPUT', if_true: files('vhost-user-input.c')) # PCI Stubs - system_virtio_ss.add(when: 'CONFIG_VIRTIO_PCI', if_true: files('vhost-user-device-pci.c')) + system_virtio_ss.add(when: ['CONFIG_VIRTIO_PCI', 'CONFIG_VHOST_USER_TEST'], + if_true: files('vhost-user-test-device-pci.c')) system_virtio_ss.add(when: ['CONFIG_VIRTIO_PCI', 'CONFIG_VHOST_USER_GPIO'], if_true: files('vhost-user-gpio-pci.c')) system_virtio_ss.add(when: ['CONFIG_VIRTIO_PCI', 'CONFIG_VHOST_USER_I2C'], -- 2.47.2