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=-5.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 9C1A3C388F2 for ; Thu, 22 Oct 2020 05:47:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 305EB21481 for ; Thu, 22 Oct 2020 05:47:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Kc5O2xUj" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2508048AbgJVFrk (ORCPT ); Thu, 22 Oct 2020 01:47:40 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:54329 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2508040AbgJVFrk (ORCPT ); Thu, 22 Oct 2020 01:47:40 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1603345659; 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=g4B//qnaxTvyagU4Ta4XmHD0G1WDTvcCQn1ISIno4ag=; b=Kc5O2xUjpMbgtyLygBwmqGXIYejZDoWjy8uQWLfUVnn22URh5zE7JB7RNmeum1/ewFa7/t zui+KRLiqqrEQIkCowTx3HT0vciq5iARY6teVfaudiq/ZndceSgsfWmXWaNmBYzfS9tuNh TvtcHj+nMaaC1NEXgGo5nHVLw9mGyO8= 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-55-24ki4_b3MOywOgsTgU-wwA-1; Thu, 22 Oct 2020 01:47:37 -0400 X-MC-Unique: 24ki4_b3MOywOgsTgU-wwA-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 3A3F98797F6; Thu, 22 Oct 2020 05:47:34 +0000 (UTC) Received: from [10.72.13.119] (ovpn-13-119.pek2.redhat.com [10.72.13.119]) by smtp.corp.redhat.com (Postfix) with ESMTP id DA8CD5C1C7; Thu, 22 Oct 2020 05:47:25 +0000 (UTC) Subject: Re: [PATCH 0/4] vDPA: API for reporting IOVA range To: "Michael S. Tsirkin" Cc: virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org, rob.miller@broadcom.com, lingshan.zhu@intel.com, eperezma@redhat.com, lulu@redhat.com, shahafs@mellanox.com, hanand@xilinx.com, mhabets@solarflare.com, gdawar@xilinx.com, saugatm@xilinx.com, vmireyno@marvell.com, zhangweining@ruijie.com.cn, eli@mellanox.com References: <20200617032947.6371-1-jasowang@redhat.com> <20201021104508-mutt-send-email-mst@kernel.org> From: Jason Wang Message-ID: <09525e8b-2c7a-de5d-128a-79b5b0725224@redhat.com> Date: Thu, 22 Oct 2020 13:47:19 +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: <20201021104508-mutt-send-email-mst@kernel.org> 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 2020/10/21 下午10:45, Michael S. Tsirkin wrote: > On Wed, Jun 17, 2020 at 11:29:43AM +0800, Jason Wang wrote: >> Hi All: >> >> This series introduces API for reporing IOVA range. This is a must for >> userspace to work correclty: >> >> - for the process that uses vhost-vDPA directly to properly allocate >> IOVA >> - for VM(qemu), when vIOMMU is not enabled, fail early if GPA is out >> of range >> - for VM(qemu), when vIOMMU is enabled, determine a valid guest >> address width >> >> Please review. >> >> Thanks > OK so what is the plan here? Change begin-end->first-last and repost? I've posted V2 with this change, but it get some warning for buildbot. Will post a V3. Thanks > >> Jason Wang (4): >> vdpa: introduce config op to get valid iova range >> vdpa_sim: implement get_iova_range bus operation >> vdpa: get_iova_range() is mandatory for device specific DMA >> translation >> vhost: vdpa: report iova range >> >> drivers/vdpa/vdpa.c | 4 ++++ >> drivers/vdpa/vdpa_sim/vdpa_sim.c | 11 +++++++++++ >> drivers/vhost/vdpa.c | 27 +++++++++++++++++++++++++++ >> include/linux/vdpa.h | 14 ++++++++++++++ >> include/uapi/linux/vhost.h | 4 ++++ >> include/uapi/linux/vhost_types.h | 5 +++++ >> 6 files changed, 65 insertions(+) >> >> -- >> 2.20.1