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 X-Spam-Level: X-Spam-Status: No, score=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F0AC1C433F5 for ; Fri, 3 Sep 2021 09:33:52 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 55AA560F91 for ; Fri, 3 Sep 2021 09:33:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 55AA560F91 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:38136 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mM5a3-0007mR-F8 for qemu-devel@archiver.kernel.org; Fri, 03 Sep 2021 05:33:51 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:44996) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mM5Eq-00035R-73 for qemu-devel@nongnu.org; Fri, 03 Sep 2021 05:11:57 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:25689) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mM5El-0003eZ-Vp for qemu-devel@nongnu.org; Fri, 03 Sep 2021 05:11:54 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1630660311; 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=GvF+X46kEoC49WaueVhaxZbp1HNsn6GPfIHP+JdTxfI=; b=M2a6UdyRcayZBiaLZwZJ6ocjh7Adkqi8cJLYITP0C3xJkp6B3ubbz4JPwKgbTgp769pJga k7qh1nfYRky8AMmvZxeHb3J1sLA3l62Crhx59TL7yyyofyECIKKdTqVOhsDxGJPu3BiqjE fqSfN1HAX9zrppHxnbCl+6Y5jVRaYdo= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-329-V2o_8xIdP-SoFlTOXygleg-1; Fri, 03 Sep 2021 05:11:50 -0400 X-MC-Unique: V2o_8xIdP-SoFlTOXygleg-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id E748A1854E20; Fri, 3 Sep 2021 09:11:48 +0000 (UTC) Received: from localhost.localdomain (ovpn-13-217.pek2.redhat.com [10.72.13.217]) by smtp.corp.redhat.com (Postfix) with ESMTP id A890B60BF1; Fri, 3 Sep 2021 09:11:43 +0000 (UTC) From: Jason Wang To: mst@redhat.com, jasowang@redhat.com, qemu-devel@nongnu.org Subject: [PATCH V2 13/21] vhost-vdpa: classify one time request Date: Fri, 3 Sep 2021 17:10:23 +0800 Message-Id: <20210903091031.47303-14-jasowang@redhat.com> In-Reply-To: <20210903091031.47303-1-jasowang@redhat.com> References: <20210903091031.47303-1-jasowang@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=jasowang@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="US-ASCII" Received-SPF: pass client-ip=216.205.24.124; envelope-from=jasowang@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -31 X-Spam_score: -3.2 X-Spam_bar: --- X-Spam_report: (-3.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.39, 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: eperezma@redhat.com, elic@nvidia.com, gdawar@xilinx.com, lingshan.zhu@intel.com, lulu@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" 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 --- hw/virtio/vhost-vdpa.c | 52 ++++++++++++++++++++++++++++++---- include/hw/virtio/vhost-vdpa.h | 1 + 2 files changed, 47 insertions(+), 6 deletions(-) diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 579f515e65..42c66de791 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -267,6 +267,13 @@ static void vhost_vdpa_add_status(struct vhost_dev *dev, uint8_t status) vhost_vdpa_call(dev, VHOST_VDPA_SET_STATUS, &s); } +static bool vhost_vdpa_one_time_request(struct vhost_dev *dev) +{ + struct vhost_vdpa *v = dev->opaque; + + return v->index != 0; +} + static int vhost_vdpa_init(struct vhost_dev *dev, void *opaque, Error **errp) { struct vhost_vdpa *v; @@ -279,6 +286,10 @@ static int vhost_vdpa_init(struct vhost_dev *dev, void *opaque, Error **errp) v->listener = vhost_vdpa_memory_listener; v->msg_type = VHOST_IOTLB_MSG_V2; + if (vhost_vdpa_one_time_request(dev)) { + return 0; + } + vhost_vdpa_add_status(dev, VIRTIO_CONFIG_S_ACKNOWLEDGE | VIRTIO_CONFIG_S_DRIVER); @@ -389,6 +400,10 @@ 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)) { @@ -412,6 +427,11 @@ static int vhost_vdpa_set_features(struct vhost_dev *dev, uint64_t features) { int ret; + + if (vhost_vdpa_one_time_request(dev)) { + return 0; + } + trace_vhost_vdpa_set_features(dev, features); ret = vhost_vdpa_call(dev, VHOST_SET_FEATURES, &features); uint8_t status = 0; @@ -436,9 +456,12 @@ static int vhost_vdpa_set_backend_cap(struct vhost_dev *dev) } features &= f; - r = vhost_vdpa_call(dev, VHOST_SET_BACKEND_FEATURES, &features); - if (r) { - return -EFAULT; + + if (vhost_vdpa_one_time_request(dev)) { + r = vhost_vdpa_call(dev, VHOST_SET_BACKEND_FEATURES, &features); + if (r) { + return -EFAULT; + } } dev->backend_cap = features; @@ -547,11 +570,21 @@ static int vhost_vdpa_dev_start(struct vhost_dev *dev, bool started) { struct vhost_vdpa *v = dev->opaque; trace_vhost_vdpa_dev_start(dev, started); + if (started) { - uint8_t status = 0; - memory_listener_register(&v->listener, &address_space_memory); 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 = 0; + memory_listener_register(&v->listener, &address_space_memory); vhost_vdpa_add_status(dev, VIRTIO_CONFIG_S_DRIVER_OK); vhost_vdpa_call(dev, VHOST_VDPA_GET_STATUS, &status); @@ -560,7 +593,6 @@ 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); return 0; @@ -570,6 +602,10 @@ 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); @@ -635,6 +671,10 @@ static int vhost_vdpa_get_features(struct vhost_dev *dev, 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); } diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index 9188226d8b..e98e327f12 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -21,6 +21,7 @@ typedef struct VhostVDPAHostNotifier { typedef struct vhost_vdpa { int device_fd; + int index; uint32_t msg_type; MemoryListener listener; struct vhost_dev *dev; -- 2.25.1