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=-3.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,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 197F9C433E2 for ; Wed, 2 Sep 2020 08:03:16 +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 CF2262084C for ; Wed, 2 Sep 2020 08:03:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="L6GhyQrm" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CF2262084C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:59088 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kDNjf-00038p-2W for qemu-devel@archiver.kernel.org; Wed, 02 Sep 2020 04:03:15 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:39978) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kDNj5-0002U9-38 for qemu-devel@nongnu.org; Wed, 02 Sep 2020 04:02:39 -0400 Received: from us-smtp-1.mimecast.com ([205.139.110.61]:59120 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kDNj3-00011Q-E7 for qemu-devel@nongnu.org; Wed, 02 Sep 2020 04:02:38 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1599033756; 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=VwgCfN6HrAvoUq/u/IelGJOEpCbdgEM2cmZ9l+uCD98=; b=L6GhyQrmzYMlFFZCF54EIiNA+AYrwpb/RoCiV7Uapov4MQXefbe2xKcmB++scT90+oxBTU 7qx3me7oFHq+RwO9uEd1S7fwuDraaX8G1P6eamoHewuhlO181muqOVPRcNybDgD1o2lGiy EBlX5cS0z7ihB1/hP/qsARDIm8FSmOA= Received: from mail-qv1-f71.google.com (mail-qv1-f71.google.com [209.85.219.71]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-474-EEHoUdcTO06abhGFVllDCg-1; Wed, 02 Sep 2020 04:02:35 -0400 X-MC-Unique: EEHoUdcTO06abhGFVllDCg-1 Received: by mail-qv1-f71.google.com with SMTP id k17so2848363qvj.12 for ; Wed, 02 Sep 2020 01:02:35 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=VwgCfN6HrAvoUq/u/IelGJOEpCbdgEM2cmZ9l+uCD98=; b=mSPUGOO1N0X27Sphxa7fskcz9sLrndzWYN9/t3i19M+T+4N3iNUMFU3RYVumz6UZd6 B+AScFgPiviulgdhEH20OMHDQrwKHnQ4tdYGow3g4RZNKiIY9GDk67JFu1Lf1E6WP876 LI+XESywq7AZHlTDTUJdmeexxEz7apn36qKOCHfE8aXfZJh894prrFaoDPSc56Qm1YPs CvBjWe+dt+PhXAl3kq5612HA/t1DZQN3u8Hi/Gu0PNkumsrIL+v3N5NVF+FmkOS94w/5 cc8lzshjC6U71rnAVTriPjIFNf8rucO4vvnMd3o0kbZe0QycVtHn0XnzEva54Vm+euc1 o7Eg== X-Gm-Message-State: AOAM532xOmgGdsr1d3VLFIP9aYk6iDn5NoqfV+M2EdhFvgzcIQgRKP9X yYVJb5xX+MHhajfPju852JjqPiYGw84eR9cqCztbnV1RKFnJbsva5F/8lPreEvHLFDnu4BK2Udk 4ea//aQwryqsMlSTb3Dc8Mw89CoztiGY= X-Received: by 2002:a05:620a:ed3:: with SMTP id x19mr5464540qkm.89.1599033754876; Wed, 02 Sep 2020 01:02:34 -0700 (PDT) X-Google-Smtp-Source: ABdhPJw3Q4tX7RC2kdnB0NX2d2SepmXL90MvcajWr9dRb+rJCiebiF3Hswl4zysUBfvc22DK5TL26mUfPoU7yj1H0KE= X-Received: by 2002:a05:620a:ed3:: with SMTP id x19mr5464530qkm.89.1599033754703; Wed, 02 Sep 2020 01:02:34 -0700 (PDT) MIME-Version: 1.0 References: <20200901142608.24481-1-eperezma@redhat.com> <20200901211357.GH3053@xz-x1> In-Reply-To: <20200901211357.GH3053@xz-x1> From: Eugenio Perez Martin Date: Wed, 2 Sep 2020 10:01:58 +0200 Message-ID: Subject: Re: [RFC v8 0/5] memory: Delete assertion in memory_region_unregister_iommu_notifier To: Peter Xu Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eperezma@redhat.com X-Mimecast-Spam-Score: 0.002 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=205.139.110.61; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/02 03:24:55 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 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: Peter Maydell , Aleksandar Rikalo , Yan Zhao , Eduardo Habkost , "Michael S. Tsirkin" , qemu-ppc@nongnu.org, Jason Wang , Juan Quintela , qemu-level , Eric Auger , qemu-arm@nongnu.org, =?UTF-8?Q?Herv=C3=A9_Poussineau?= , Avi Kivity , Paolo Bonzini , Richard Henderson , David Gibson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Tue, Sep 1, 2020 at 11:14 PM Peter Xu wrote: > > On Tue, Sep 01, 2020 at 04:26:03PM +0200, Eugenio P=C3=A9rez wrote: > > I am able to hit this assertion when a Red Hat 7 guest virtio_net devic= e > > raises an "Invalidation" of all the TLB entries. This happens in the > > guest's startup if 'intel_iommu=3Don' argument is passed to the guest > > kernel and right IOMMU/ATS devices are declared in qemu's command line. > > Thanks for working on this, Eugenio! Sorry to let the original one-liner= patch > grow into a patchset... :) > On the contrary, I knew it was not going to be so easy and it's been a pleasure to learn the DEVIOTLB intrinsics with it :). > I think it at least looks very good to me in general, besides another tri= vial > comment on patch 4. > Will address it and send PATCH then. Thanks! > -- > Peter Xu >