From patchwork Thu Jul 20 18:14:56 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eugenio Perez Martin X-Patchwork-Id: 13320947 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 EF1D6EB64DA for ; Thu, 20 Jul 2023 18:15:52 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qMYBk-00059Q-TX; Thu, 20 Jul 2023 14:15:45 -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 1qMYBR-0004L8-UT for qemu-devel@nongnu.org; Thu, 20 Jul 2023 14:15:36 -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 1qMYBQ-0003Lx-JC for qemu-devel@nongnu.org; Thu, 20 Jul 2023 14:15:25 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1689876923; 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=+ytfb3HXV+wFwSIUmTNAnsUHTHuXBYfLCvZ0GHbLF5w=; b=ijUGZ9Pc19Q8ABUrYNU8psEVXzZzCJI7ZvSdO1AgtBZ1VpIoxiptJb14x2/waq4NazacCB MDPmrojVfJLSC2i2ALiW9kpyBgGrtlQdmXhoZFTckl6ytzxEjgeNfWwuZaE+Ofjx1DGdE+ warKu/aCorz4gJRKepCgBi7aG0Zgmy8= 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-372-di8aBrTNMa6DgL5B80uODA-1; Thu, 20 Jul 2023 14:15:18 -0400 X-MC-Unique: di8aBrTNMa6DgL5B80uODA-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 8CFAC88D196; Thu, 20 Jul 2023 18:15:17 +0000 (UTC) Received: from eperezma.remote.csb (unknown [10.39.193.122]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3A7222166B25; Thu, 20 Jul 2023 18:15:16 +0000 (UTC) From: =?utf-8?q?Eugenio_P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: yvugenfi@redhat.com, =?utf-8?q?Eugenio_P=C3=A9rez?= , si-wei.liu@oracle.com, Jason Wang , "Michael S. Tsirkin" , Dragos Tatulea , Shannon Nelson Subject: [RFC PATCH 09/12] vdpa: add vhost_vdpa_restart_queue Date: Thu, 20 Jul 2023 20:14:56 +0200 Message-Id: <20230720181459.607008-10-eperezma@redhat.com> In-Reply-To: <20230720181459.607008-1-eperezma@redhat.com> References: <20230720181459.607008-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.6 Received-SPF: pass client-ip=170.10.133.124; envelope-from=eperezma@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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Split out vq restart operation in its own function, as it may be called with ring reset. Signed-off-by: Eugenio Pérez --- hw/virtio/vhost-vdpa.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 7248072989..7b24fa3e12 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -562,6 +562,29 @@ static void vhost_vdpa_reset_queue(struct vhost_dev *dev, int idx) } } +/* TODO: Properly reorder static functions */ +static bool vhost_vdpa_svq_start(struct vhost_dev *dev, unsigned i, + Error **errp); +static int vhost_vdpa_restart_queue(struct vhost_dev *dev, int idx) +{ + struct vhost_vdpa *v = dev->opaque; + + if (v->shadow_vqs_enabled) { + Error *err = NULL; + bool ok = vhost_vdpa_svq_start(dev, idx, &err); + if (unlikely(!ok)) { + error_report_err(err); + return -1; + } + } + + if (dev->features & VIRTIO_F_RING_RESET) { + return vhost_vdpa_set_vring_ready_internal(v, idx, true); + } + + return 0; +} + /* * The use of this function is for requests that only need to be * applied once. Typically such request occurs at the beginning @@ -1574,4 +1597,5 @@ const VhostOps vdpa_ops = { .vhost_set_config_call = vhost_vdpa_set_config_call, .vhost_reset_status = vhost_vdpa_reset_status, .vhost_reset_queue = vhost_vdpa_reset_queue, + .vhost_restart_queue = vhost_vdpa_restart_queue, };