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=-20.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,NICE_REPLY_A, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=unavailable 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 63C47C433DB for ; Wed, 30 Dec 2020 06:25:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 29B2E207B1 for ; Wed, 30 Dec 2020 06:25:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726477AbgL3GYo (ORCPT ); Wed, 30 Dec 2020 01:24:44 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:59844 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726161AbgL3GYn (ORCPT ); Wed, 30 Dec 2020 01:24:43 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1609309397; 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=zMOHRQRlmmzuXmXJwYwsntjIgSSrZq/XW9h6GVg/eWI=; b=bNxiez54pDzDEXZtFvmDlrL8+SijXP5Oi89Xw/IbrsnbBsASwV3DE3X+7NEp8awblFtUYX 72nd1aZG1FXCcyIYrf0x5BnmRYQxN291Kbt4P2altPAZrX78Rgl5T3q/2xmpAOETq3XS17 Nq3cn5pFZrCqFFQCNl8wrIounRXEfUA= 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-489-EQtmwsDoOMSTdZvFTvX8SQ-1; Wed, 30 Dec 2020 01:23:15 -0500 X-MC-Unique: EQtmwsDoOMSTdZvFTvX8SQ-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 1CF0015720; Wed, 30 Dec 2020 06:23:14 +0000 (UTC) Received: from [10.72.13.30] (ovpn-13-30.pek2.redhat.com [10.72.13.30]) by smtp.corp.redhat.com (Postfix) with ESMTP id 50A6271C8B; Wed, 30 Dec 2020 06:23:03 +0000 (UTC) Subject: Re: [PATCH 11/21] vhost-vdpa: introduce asid based IOTLB To: Eli Cohen Cc: mst@redhat.com, eperezma@redhat.com, kvm@vger.kernel.org, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, lulu@redhat.com, eli@mellanox.com, lingshan.zhu@intel.com, rob.miller@broadcom.com, stefanha@redhat.com, sgarzare@redhat.com References: <20201216064818.48239-1-jasowang@redhat.com> <20201216064818.48239-12-jasowang@redhat.com> <20201229114110.GC195479@mtl-vdi-166.wap.labs.mlnx> From: Jason Wang Message-ID: <02c7a7ea-3765-3ff8-0742-0520d6cc4ca5@redhat.com> Date: Wed, 30 Dec 2020 14:23:01 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20201229114110.GC195479@mtl-vdi-166.wap.labs.mlnx> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2020/12/29 下午7:41, Eli Cohen wrote: > On Wed, Dec 16, 2020 at 02:48:08PM +0800, Jason Wang wrote: >> This patch converts the vhost-vDPA device to support multiple IOTLBs >> tagged via ASID via hlist. This will be used for supporting multiple >> address spaces in the following patches. >> >> Signed-off-by: Jason Wang >> --- >> drivers/vhost/vdpa.c | 106 ++++++++++++++++++++++++++++++++----------- >> 1 file changed, 80 insertions(+), 26 deletions(-) >> >> diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c >> index feb6a58df22d..060d5b5b7e64 100644 >> --- a/drivers/vhost/vdpa.c >> +++ b/drivers/vhost/vdpa.c >> @@ -33,13 +33,21 @@ enum { >> >> #define VHOST_VDPA_DEV_MAX (1U << MINORBITS) >> >> +#define VHOST_VDPA_IOTLB_BUCKETS 16 >> + >> +struct vhost_vdpa_as { >> + struct hlist_node hash_link; >> + struct vhost_iotlb iotlb; >> + u32 id; >> +}; >> + >> struct vhost_vdpa { >> struct vhost_dev vdev; >> struct iommu_domain *domain; >> struct vhost_virtqueue *vqs; >> struct completion completion; >> struct vdpa_device *vdpa; >> - struct vhost_iotlb *iotlb; >> + struct hlist_head as[VHOST_VDPA_IOTLB_BUCKETS]; >> struct device dev; >> struct cdev cdev; >> atomic_t opened; >> @@ -49,12 +57,64 @@ struct vhost_vdpa { >> struct eventfd_ctx *config_ctx; >> int in_batch; >> struct vdpa_iova_range range; >> + int used_as; > This is not really used. Not in this patch and later removed. Right, will remove this. Thanks