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=-3.9 required=3.0 tests=BAYES_00,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 75E01C388F9 for ; Wed, 21 Oct 2020 14:46:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EF0F82224E for ; Wed, 21 Oct 2020 14:46:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Vlqs9FqT" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2443307AbgJUOqA (ORCPT ); Wed, 21 Oct 2020 10:46:00 -0400 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:51549 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2442690AbgJUOqA (ORCPT ); Wed, 21 Oct 2020 10:46:00 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1603291559; 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: in-reply-to:in-reply-to:references:references; bh=NaMXT/y4BrbebVGe8E7alCrveFoprjBwvt8pmethQp0=; b=Vlqs9FqTX6rXo+9IRb9w/V13MOAkOfNK6pAQmN0FljZl77aqd/PNd3WQKpVh7FSuQf/+XG YXBIGo+TE85EvcJotYrGs7osSwwIK7KFLozFDiZJ7Ng1AbqVO6vzlC6IXeqtQhIW0MTdQg FvQ0kpsD97u8M72lu1ZvGSpdhAAHroc= 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-12-QbOWxe5gOm6-jglYJVbKgA-1; Wed, 21 Oct 2020 10:45:55 -0400 X-MC-Unique: QbOWxe5gOm6-jglYJVbKgA-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 0EC7464162; Wed, 21 Oct 2020 14:45:53 +0000 (UTC) Received: from redhat.com (ovpn-115-38.ams2.redhat.com [10.36.115.38]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 0C5F719930; Wed, 21 Oct 2020 14:45:47 +0000 (UTC) Date: Wed, 21 Oct 2020 10:45:44 -0400 From: "Michael S. Tsirkin" To: Jason Wang 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 Subject: Re: [PATCH 0/4] vDPA: API for reporting IOVA range Message-ID: <20201021104508-mutt-send-email-mst@kernel.org> References: <20200617032947.6371-1-jasowang@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200617032947.6371-1-jasowang@redhat.com> X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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? > 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