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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8D087C433EF for ; Tue, 12 Oct 2021 14:10:03 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 1D43060EFE for ; Tue, 12 Oct 2021 14:10:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 1D43060EFE Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:34540 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1maITh-0005hF-TS for qemu-devel@archiver.kernel.org; Tue, 12 Oct 2021 10:10:01 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:53692) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1maIRQ-0002uS-9Z for qemu-devel@nongnu.org; Tue, 12 Oct 2021 10:07:41 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:26661) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1maIRL-0002Wu-Br for qemu-devel@nongnu.org; Tue, 12 Oct 2021 10:07:39 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1634047653; 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; bh=LuTySLnVQJB8wN9HxIsBfpOq+iIy8fTbtE3HnX0LhDk=; b=CjXD+zPeIAf5BgzKDvfVuAAvQRxD8YZ2aBIfPL14xkfH68E5legML1/Q8rzkQ0PySuT/qs 8B+lAezv11QJC18e8wblKHUBE3WeNTKH3Aj9zKyaz9jjOLnf2tRCWCCrJApMXasup2rYia 693JmbdRmRzLKcJ6aTCQEh2mvgBQE04= 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-436-4Slfj3WyPcy5_ZXO4ZaSMQ-1; Tue, 12 Oct 2021 10:07:30 -0400 X-MC-Unique: 4Slfj3WyPcy5_ZXO4ZaSMQ-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 D646F801A93; Tue, 12 Oct 2021 14:07:29 +0000 (UTC) Received: from eperezma.remote.csb (unknown [10.39.193.131]) by smtp.corp.redhat.com (Postfix) with ESMTP id 15954196FA; Tue, 12 Oct 2021 14:07:13 +0000 (UTC) From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= To: qemu-devel@nongnu.org Subject: [PATCH v3 0/3] vdpa: Check iova range on memory regions ops Date: Tue, 12 Oct 2021 16:07:07 +0200 Message-Id: <20211012140710.804529-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eperezma@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable 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: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.049, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, T_SPF_TEMPERROR=0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Parav Pandit , "Michael S. Tsirkin" , Jason Wang , virtualization@lists.linux-foundation.org, Stefan Hajnoczi , Eli Cohen , Stefano Garzarella Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" At this moment vdpa will not send memory regions bigger than 1<<63.=0D However, actual iova range could be way more restrictive than that.=0D =0D Since we can obtain the range through vdpa ioctl call, just save it=0D from the beginning of the operation and check against it.=0D =0D Changes from v2:=0D * Fallback to a default value in case kernel does not support=0D VHOST_VDPA_GET_IOVA_RANGE syscall.=0D =0D Changes from v1:=0D * Use of int128_gt instead of plain uint64_t < comparison on memory=0D range end.=0D * Document vhost_vdpa_section_end's return value so it's clear that=0D it returns "one past end".=0D =0D Eugenio P=C3=A9rez (3):=0D vdpa: Skip protected ram IOMMU mappings=0D vdpa: Add vhost_vdpa_section_end=0D vdpa: Check for iova range at mappings changes=0D =0D include/hw/virtio/vhost-vdpa.h | 2 +=0D hw/virtio/vhost-vdpa.c | 81 +++++++++++++++++++++++++---------=0D hw/virtio/trace-events | 1 +=0D 3 files changed, 63 insertions(+), 21 deletions(-)=0D =0D --=20=0D 2.27.0=0D =0D