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 mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by smtp.lore.kernel.org (Postfix) with ESMTP id 29ACEECD6C4 for ; Wed, 11 Feb 2026 16:15:59 +0000 (UTC) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 60F0540B92; Wed, 11 Feb 2026 17:15:32 +0100 (CET) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by mails.dpdk.org (Postfix) with ESMTP id 273AA4066F for ; Wed, 11 Feb 2026 17:15:31 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1770826530; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=6Qy8/WmERnv2t4odyURaRnSAcraFuxZnJpkhpirX6Es=; b=aRlFGMraaFx0XlO7OERzbEo1rnMgBE/l8sn264vUihUZ3B0duXTYGOnkCnIEp0YfMIhAxe A70LrmNdwkwu0iX2j9uPBa6xTmqo5/WwYpJFW0jFmTOddiLbLT6X73TADPFmzLQ7pApp14 0Ue7wiFrDHnU6N9c0KWG931NtVjFWAM= Received: from mx-prod-mc-01.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-518-GHG4GaqSOQiMwySV3j6P8A-1; Wed, 11 Feb 2026 11:15:27 -0500 X-MC-Unique: GHG4GaqSOQiMwySV3j6P8A-1 X-Mimecast-MFC-AGG-ID: GHG4GaqSOQiMwySV3j6P8A_1770826526 Received: from mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.93]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 90623195609F; Wed, 11 Feb 2026 16:15:26 +0000 (UTC) Received: from fedora.redhat.com (unknown [10.45.226.212]) by mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 1777718004AD; Wed, 11 Feb 2026 16:15:23 +0000 (UTC) From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= To: Maxime Coquelin Cc: jasowang@redhat.com, david.marchand@redhat.com, mst@redhat.com, dev@dpdk.org, Yongji Xie , chenbox@nvidia.com Subject: [RFC 08/10] uapi: Align vduse.h for enable and suspend VDUSE messages Date: Wed, 11 Feb 2026 17:14:55 +0100 Message-ID: <20260211161457.2703686-9-eperezma@redhat.com> In-Reply-To: <20260211161457.2703686-1-eperezma@redhat.com> References: <20260211161457.2703686-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.93 X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: QsxplV5_yDunwiZF1vT-xJyFpNknzgzZhfpeF14kqmE_1770826526 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org From: Super User This is a prerequisite for next patches to use them. These features are required to properly support live migration and proper device initialization ordering. These are not in maintainer's branch at the moment: https://lore.kernel.org/lkml/20260210082554.1582553-1-eperezma@redhat.com https://lore.kernel.org/lkml/20260211120158.2501592-1-eperezma@redhat.com Signed-off-by: Eugenio Pérez --- kernel/linux/uapi/linux/vduse.h | 29 ++++++++++++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) diff --git a/kernel/linux/uapi/linux/vduse.h b/kernel/linux/uapi/linux/vduse.h index e19b3c0f51b5..156446cdc712 100644 --- a/kernel/linux/uapi/linux/vduse.h +++ b/kernel/linux/uapi/linux/vduse.h @@ -14,6 +14,13 @@ #define VDUSE_API_VERSION_1 1 +/* Features support */ + +#define VDUSE_API_VERSION_2 2 + +/* The VDUSE instance expects a request for vq ready */ +#define VDUSE_F_QUEUE_READY 0 + /* * Get the version of VDUSE API that kernel supported (VDUSE_API_VERSION). * This is used for future extension. @@ -33,6 +40,7 @@ * @vq_align: the allocation alignment of virtqueue's metadata * @ngroups: number of vq groups that VDUSE device declares * @nas: number of address spaces that VDUSE device declares + * @vduse_features: VDUSE features * @reserved: for future use, needs to be initialized to zero * @config_size: the size of the configuration space * @config: the buffer of the configuration space @@ -49,7 +57,8 @@ struct vduse_dev_config { __u32 vq_align; __u32 ngroups; /* if VDUSE_API_VERSION >= 1 */ __u32 nas; /* if VDUSE_API_VERSION >= 1 */ - __u32 reserved[11]; + __u64 vduse_features; + __u32 reserved[9]; __u32 config_size; __u8 config[]; }; @@ -63,6 +72,9 @@ struct vduse_dev_config { */ #define VDUSE_DESTROY_DEV _IOW(VDUSE_BASE, 0x03, char[VDUSE_NAME_MAX]) +/* Get the VDUSE supported features */ +#define VDUSE_GET_FEATURES _IOR(VDUSE_BASE, 0x04, __u64) + /* The ioctls for VDUSE device (/dev/vduse/$NAME) */ /** @@ -325,6 +337,7 @@ enum vduse_req_type { VDUSE_SET_STATUS, VDUSE_UPDATE_IOTLB, VDUSE_SET_VQ_GROUP_ASID, + VDUSE_SET_VQ_READY, }; /** @@ -372,6 +385,15 @@ struct vduse_iova_range_v2 { __u32 padding; }; +/** + * struct vduse_vq_ready - Virtqueue ready request message + * @num: Virtqueue number + */ +struct vduse_vq_ready { + __u32 num; + __u32 ready; +}; + /** * struct vduse_dev_request - control request * @type: request type @@ -382,6 +404,7 @@ struct vduse_iova_range_v2 { * @iova: IOVA range for updating * @iova_v2: IOVA range for updating if API_VERSION >= 1 * @vq_group_asid: ASID of a virtqueue group + * @vq_ready: Virtqueue ready request * @padding: padding * * Structure used by read(2) on /dev/vduse/$NAME. @@ -399,6 +422,10 @@ struct vduse_dev_request { */ struct vduse_iova_range_v2 iova_v2; struct vduse_vq_group_asid vq_group_asid; + + /* Only if VDUSE_F_QUEUE_READY is negotiated */ + struct vduse_vq_ready vq_ready; + __u32 padding[32]; }; }; -- 2.53.0