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=-0.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 61F12C433DF for ; Wed, 17 Jun 2020 03:30:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 357C22073E for ; Wed, 17 Jun 2020 03:30:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="IEIVnhxW" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726686AbgFQDaF (ORCPT ); Tue, 16 Jun 2020 23:30:05 -0400 Received: from us-smtp-2.mimecast.com ([205.139.110.61]:60642 "EHLO us-smtp-delivery-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726044AbgFQDaF (ORCPT ); Tue, 16 Jun 2020 23:30:05 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1592364603; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=S6LxcsbNQFyva+euo/WtpLxOTX7LsaRMorCNc/7+mDo=; b=IEIVnhxWXuEQUa/T3FW4dYlxXQXuAsquZKPooxG+NOcG1QZBgn99nydY/fTxle8fC4wDfr /SBBchuJTqe1c2eQesuW4N5wTiK7EdYuRybYsTtE4KJcnF1Y5o3QgRiEXhmOi4Y0hnXwzL Nb7c53+JL2U0p+abGtCdmtwURlKQxdY= 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-196-cqAyHXRJOgucOdsOqjKJ9Q-1; Tue, 16 Jun 2020 23:29:59 -0400 X-MC-Unique: cqAyHXRJOgucOdsOqjKJ9Q-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 19DED10059B9; Wed, 17 Jun 2020 03:29:58 +0000 (UTC) Received: from jason-ThinkPad-X1-Carbon-6th.redhat.com (ovpn-13-217.pek2.redhat.com [10.72.13.217]) by smtp.corp.redhat.com (Postfix) with ESMTP id 400985C1BD; Wed, 17 Jun 2020 03:29:49 +0000 (UTC) From: Jason Wang To: mst@redhat.com, jasowang@redhat.com, virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org Cc: 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 Subject: [PATCH 0/4] vDPA: API for reporting IOVA range Date: Wed, 17 Jun 2020 11:29:43 +0800 Message-Id: <20200617032947.6371-1-jasowang@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 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