From nobody Mon Feb 9 10:48:17 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=1633450824; cv=none; d=zohomail.com; s=zohoarc; b=THUb1Ixc7a2+LoNyytRTzeItlNLZVyJNexmBBhQ4kyJ//7JcrMovC7nFv29s5z6Jgn6gtpp09z4OV7GhemjVOrrEPNBt6ZYkZdIX02J+Gj0cUX023nhi7HhX9qlroqmz8VnrCEtT9V/AQfP82X0xJKREGxxQpbhUFui5kvqvBJI= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1633450824; h=Content-Type: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=fh2VpJXcxJxzBAVFO9OEfTC6q1W7DfmN4tRkON1Y0l0=; b=ENqMk1GaUTWa3iPF+hUUobFTOKt7Vk0TpuXf+5wC+dE+YAS+PBST92LTmhVc7OgmL3/J3+D8hOlUee3YT+MacF+pdy1NeZ+b+i0NmkflElFu3QgaitemV2AHBIyahURuKcuKMqdUWmiw3b2kZAJwTCap+TSUX6ZBaMlpRYrd4KU= 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 16334508242081003.7397616448327; Tue, 5 Oct 2021 09:20:24 -0700 (PDT) Received: from localhost ([::1]:57004 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mXnB0-0001dn-Ou for importer@patchew.org; Tue, 05 Oct 2021 12:20:22 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:46780) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mXmsN-0008O2-GF for qemu-devel@nongnu.org; Tue, 05 Oct 2021 12:01:08 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:44089) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mXmsJ-0004bK-LA for qemu-devel@nongnu.org; Tue, 05 Oct 2021 12:01:07 -0400 Received: from mail-wm1-f71.google.com (mail-wm1-f71.google.com [209.85.128.71]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-507-XpsgrE3sP1-H_pTJyA4mXg-1; Tue, 05 Oct 2021 12:01:00 -0400 Received: by mail-wm1-f71.google.com with SMTP id 75-20020a1c004e000000b00307b9b32cc9so1118435wma.1 for ; Tue, 05 Oct 2021 09:01:00 -0700 (PDT) Received: from redhat.com ([2.55.147.134]) by smtp.gmail.com with ESMTPSA id y6sm7157068wro.63.2021.10.05.09.00.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 05 Oct 2021 09:00:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1633449662; 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: in-reply-to:in-reply-to:references:references; bh=fh2VpJXcxJxzBAVFO9OEfTC6q1W7DfmN4tRkON1Y0l0=; b=gWigkoRY88lRG9EY3+JM9eXNGNgVuARhbCgcsaUkbn8izrjqgFnJDZWtqI4zuSC1KCRjrz XtpViXfNXReyC1VTOC/H/k7VWweVKNNYIBJmzogAGc93/fmG9MdL9ibbAS89iBVnUpbpgj 8wQquBGGs7zHfuDUDCAd628QsyIbv+A= X-MC-Unique: XpsgrE3sP1-H_pTJyA4mXg-1 X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=fh2VpJXcxJxzBAVFO9OEfTC6q1W7DfmN4tRkON1Y0l0=; b=yE6m5pUIGzo4kezeLJsZCeLmJa0CaZmlEvdbqdwSj4ZsiP2yMP3w4XQXzxwiMrijYv EvDYNtRI1kZfYBDPQ6cFMiqz/ZTvPr/8kfws1i2bXhqjLU/ED9lFzwsZBsyYkCXPONEn Gv6Tmb4otyKKuWQ26ioYdwUd4FnGeTE275lNQ3mxnfGtCDjaJbkcKbveDQbE9AWA5cDl WJ2i5O22gITPKNPk89mdPs4ML9W7dWgbaclCXdNnHFi7lPgoe6enCup3aMW5EbwttsJA TtciOKBRhNATnulV2Xtgq7CJr0VQpwdwhhbElxZNfRRdZcyq1FT2j7xUi5nEEWgYXPXq CFeA== X-Gm-Message-State: AOAM533hrD+TM6B0U9dqNnPAboRqD7dx+j5apj1DyH7p9iGIF7w1hidX aPFQjeoG5m4QV3jlWwCQBEL+qDPN9L3xJl6v6EJqmmfuXSaQqwTnoVySGezoFc+0ADS1LGjvRpk CdkSITqfcwKxQKjPTf1IrOBxfe8TmYhzYWOhZBdLBnCb/yUE5tOMb0Wdkbc45 X-Received: by 2002:a05:600c:1553:: with SMTP id f19mr4364147wmg.66.1633449658826; Tue, 05 Oct 2021 09:00:58 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxl5yHJwhofQS9dq0CCX8L+VKJiWobW9rsU0NzAXMJmT6zS/EkcE7PDezTnrizjd6rF8uvfHQ== X-Received: by 2002:a05:600c:1553:: with SMTP id f19mr4364125wmg.66.1633449658626; Tue, 05 Oct 2021 09:00:58 -0700 (PDT) Date: Tue, 5 Oct 2021 12:00:55 -0400 From: "Michael S. Tsirkin" To: qemu-devel@nongnu.org Subject: [PULL 04/57] vhost-vdpa: classify one time request Message-ID: <20211005155946.513818-5-mst@redhat.com> References: <20211005155946.513818-1-mst@redhat.com> MIME-Version: 1.0 In-Reply-To: <20211005155946.513818-1-mst@redhat.com> X-Mailer: git-send-email 2.27.0.106.g8ac3dc51b1 X-Mutt-Fcc: =sent Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=mst@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Disposition: inline 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=216.205.24.124; envelope-from=mst@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.066, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , Jason Wang Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1633450826287100001 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Jason Wang Vhost-vdpa uses one device multiqueue queue (pairs) model. So we need to classify the one time request (e.g SET_OWNER) and make sure those request were only called once per device. This is used for multiqueue support. Signed-off-by: Jason Wang Message-Id: <20210907090322.1756-3-jasowang@redhat.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- include/hw/virtio/vhost-vdpa.h | 1 + hw/virtio/vhost-vdpa.c | 52 ++++++++++++++++++++++++++++++---- 2 files changed, 47 insertions(+), 6 deletions(-) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index a8963da2d9..6b9288fef8 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -21,6 +21,7 @@ typedef struct VhostVDPAHostNotifier { =20 typedef struct vhost_vdpa { int device_fd; + int index; uint32_t msg_type; bool iotlb_batch_begin_sent; MemoryListener listener; diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 47d7a5a23d..edac4017da 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -279,6 +279,13 @@ static void vhost_vdpa_add_status(struct vhost_dev *de= v, uint8_t status) vhost_vdpa_call(dev, VHOST_VDPA_SET_STATUS, &s); } =20 +static bool vhost_vdpa_one_time_request(struct vhost_dev *dev) +{ + struct vhost_vdpa *v =3D dev->opaque; + + return v->index !=3D 0; +} + static int vhost_vdpa_init(struct vhost_dev *dev, void *opaque, Error **er= rp) { struct vhost_vdpa *v; @@ -291,6 +298,10 @@ static int vhost_vdpa_init(struct vhost_dev *dev, void= *opaque, Error **errp) v->listener =3D vhost_vdpa_memory_listener; v->msg_type =3D VHOST_IOTLB_MSG_V2; =20 + if (vhost_vdpa_one_time_request(dev)) { + return 0; + } + vhost_vdpa_add_status(dev, VIRTIO_CONFIG_S_ACKNOWLEDGE | VIRTIO_CONFIG_S_DRIVER); =20 @@ -401,6 +412,10 @@ static int vhost_vdpa_memslots_limit(struct vhost_dev = *dev) static int vhost_vdpa_set_mem_table(struct vhost_dev *dev, struct vhost_memory *mem) { + if (vhost_vdpa_one_time_request(dev)) { + return 0; + } + trace_vhost_vdpa_set_mem_table(dev, mem->nregions, mem->padding); if (trace_event_get_state_backends(TRACE_VHOST_VDPA_SET_MEM_TABLE) && trace_event_get_state_backends(TRACE_VHOST_VDPA_DUMP_REGIONS)) { @@ -424,6 +439,11 @@ static int vhost_vdpa_set_features(struct vhost_dev *d= ev, uint64_t features) { int ret; + + if (vhost_vdpa_one_time_request(dev)) { + return 0; + } + trace_vhost_vdpa_set_features(dev, features); ret =3D vhost_vdpa_call(dev, VHOST_SET_FEATURES, &features); uint8_t status =3D 0; @@ -448,9 +468,12 @@ static int vhost_vdpa_set_backend_cap(struct vhost_dev= *dev) } =20 features &=3D f; - r =3D vhost_vdpa_call(dev, VHOST_SET_BACKEND_FEATURES, &features); - if (r) { - return -EFAULT; + + if (vhost_vdpa_one_time_request(dev)) { + r =3D vhost_vdpa_call(dev, VHOST_SET_BACKEND_FEATURES, &features); + if (r) { + return -EFAULT; + } } =20 dev->backend_cap =3D features; @@ -559,11 +582,21 @@ static int vhost_vdpa_dev_start(struct vhost_dev *dev= , bool started) { struct vhost_vdpa *v =3D dev->opaque; trace_vhost_vdpa_dev_start(dev, started); + + if (started) { + vhost_vdpa_host_notifiers_init(dev); + vhost_vdpa_set_vring_ready(dev); + } else { + vhost_vdpa_host_notifiers_uninit(dev, dev->nvqs); + } + + if (vhost_vdpa_one_time_request(dev)) { + return 0; + } + if (started) { uint8_t status =3D 0; memory_listener_register(&v->listener, &address_space_memory); - vhost_vdpa_host_notifiers_init(dev); - vhost_vdpa_set_vring_ready(dev); vhost_vdpa_add_status(dev, VIRTIO_CONFIG_S_DRIVER_OK); vhost_vdpa_call(dev, VHOST_VDPA_GET_STATUS, &status); =20 @@ -572,7 +605,6 @@ static int vhost_vdpa_dev_start(struct vhost_dev *dev, = bool started) vhost_vdpa_reset_device(dev); vhost_vdpa_add_status(dev, VIRTIO_CONFIG_S_ACKNOWLEDGE | VIRTIO_CONFIG_S_DRIVER); - vhost_vdpa_host_notifiers_uninit(dev, dev->nvqs); memory_listener_unregister(&v->listener); =20 return 0; @@ -582,6 +614,10 @@ static int vhost_vdpa_dev_start(struct vhost_dev *dev,= bool started) static int vhost_vdpa_set_log_base(struct vhost_dev *dev, uint64_t base, struct vhost_log *log) { + if (vhost_vdpa_one_time_request(dev)) { + return 0; + } + trace_vhost_vdpa_set_log_base(dev, base, log->size, log->refcnt, log->= fd, log->log); return vhost_vdpa_call(dev, VHOST_SET_LOG_BASE, &base); @@ -647,6 +683,10 @@ static int vhost_vdpa_get_features(struct vhost_dev *d= ev, =20 static int vhost_vdpa_set_owner(struct vhost_dev *dev) { + if (vhost_vdpa_one_time_request(dev)) { + return 0; + } + trace_vhost_vdpa_set_owner(dev); return vhost_vdpa_call(dev, VHOST_SET_OWNER, NULL); } --=20 MST