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=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham 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 8647FC65BAF for ; Wed, 12 Dec 2018 10:08:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5316F2086D for ; Wed, 12 Dec 2018 10:08:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5316F2086D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727027AbeLLKI3 (ORCPT ); Wed, 12 Dec 2018 05:08:29 -0500 Received: from mx1.redhat.com ([209.132.183.28]:42176 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726727AbeLLKI2 (ORCPT ); Wed, 12 Dec 2018 05:08:28 -0500 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 mx1.redhat.com (Postfix) with ESMTPS id 6AE9B307D857; Wed, 12 Dec 2018 10:08:28 +0000 (UTC) Received: from jason-ThinkPad-T450s.redhat.com (ovpn-12-55.pek2.redhat.com [10.72.12.55]) by smtp.corp.redhat.com (Postfix) with ESMTP id 0D5615C3FA; Wed, 12 Dec 2018 10:08:22 +0000 (UTC) From: Jason Wang To: mst@redhat.com, jasowang@redhat.com, kvm@vger.kernel.org, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH net V2 0/4] Fix various issue of vhost Date: Wed, 12 Dec 2018 18:08:15 +0800 Message-Id: <20181212100819.21295-1-jasowang@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.48]); Wed, 12 Dec 2018 10:08:28 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi: This series tries to fix various issues of vhost: - Patch 1 adds a missing write barrier between used idx updating and logging. - Patch 2-3 brings back the protection of device IOTLB through vq mutex, this fixes possible use after free in device IOTLB entries. - Patch 4-7 fixes the diry page logging when device IOTLB is enabled. We should done through GPA instead of GIOVA, this was done through intorudce HVA->GPA reverse mapping and convert HVA to GPA during logging dirty pages. Please consider them for -stable. Thanks Changes from V1: - silent compiler warning for 32bit. - use mutex_trylock() on slowpath instead of mutex_lock() even on fast path. Jason Wang (4): vhost: make sure used idx is seen before log in vhost_add_used_n() vhost_net: switch to use mutex_trylock() in vhost_net_busy_poll() Revert "net: vhost: lock the vqs one by one" vhost: log dirty page correctly drivers/vhost/net.c | 11 ++++- drivers/vhost/vhost.c | 102 ++++++++++++++++++++++++++++++++++-------- drivers/vhost/vhost.h | 3 +- 3 files changed, 95 insertions(+), 21 deletions(-) -- 2.17.1