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=-0.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 8EAE3C3279B for ; Mon, 2 Jul 2018 18:23:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3C5762503E for ; Mon, 2 Jul 2018 18:23:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="RJaV6Qqo" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3C5762503E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.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 S1753250AbeGBSXF (ORCPT ); Mon, 2 Jul 2018 14:23:05 -0400 Received: from mail-wm0-f66.google.com ([74.125.82.66]:55812 "EHLO mail-wm0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752208AbeGBSXD (ORCPT ); Mon, 2 Jul 2018 14:23:03 -0400 Received: by mail-wm0-f66.google.com with SMTP id v16-v6so10016630wmv.5 for ; Mon, 02 Jul 2018 11:23:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=UUCX6jLRSx2FWWfvnssM0JbPWK5OLqOYc+jJ+yqeeTU=; b=RJaV6QqoLXAcVoXE7f2ToWGBjG/cWq5aBzLb39cLIs1094fnPF2lw3AXE4h6Up4bNR GBAfpqwxM5n5LY2jlPRwTSN6JkUSKtmtQG/ejgIdB1qje+tnqIi6+432jgDsy1futumA 2lnINoLuVxiakYPRhuyVtEkkJC9fL6bmboloMXe9S1ftKiNORhrQZp7A8lwozVHerwC9 UKI2wOAfftdNTvYwnwZ7NtNy0snM9Hy5msjjmohRvrHuv/JN7vLZVc2h5un8y0Y3wm95 IzwYObDIfniLdHBTa5ldWTINmW+3KIz68vOVB3LtgPT7C/1PQqz0ATiK1VZqpy4MB6HV wZnw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=UUCX6jLRSx2FWWfvnssM0JbPWK5OLqOYc+jJ+yqeeTU=; b=r1ooO1/KJvg2aBYv43xSQlDfhpiO28WKNLNO6x2xekizZ/Zz3pR0tlDTdUsg9Zq32Z sy28/1woqMENT5OhDiITpeqqFtydD3Ec6/NUirp2POQkrN83orSF0zfLZjiEnWFB+tG4 WvTkEVsH3TuV3IcRziKXH2/dk1bf57DW44/+7U2qUVsmqX9S3NdU0EGyYdvBW6hWmwaW c0TKFs9pz5yXUyYNvSVFwAvQHniU9htn/fK40V9afV/qdXc168vF2E2IzBlMcgSw0++I vJzT8BbR2MPoG8IJqdQ4E9NXuI98mTAr5JihLWh84vZ0IjI/H/hAim0dtTYiuaTsqENl aRFA== X-Gm-Message-State: APt69E0p6AiLFXT2fcvOgGFzxplE0+xNqUx7PYsW8lk160I1Tf09E682 yHmdoIOHaC3gCj0StWNpmV1+gyJv X-Google-Smtp-Source: AAOMgpemxXIMR3B4WN3V9o68ao+mwYocsII/lj4nVxEwHYkjlYlNoEi8UzD9jmt1HC9vNyQNWB0vng== X-Received: by 2002:a1c:647:: with SMTP id 68-v6mr9469417wmg.82.1530555782603; Mon, 02 Jul 2018 11:23:02 -0700 (PDT) Received: from hobbes.localnet (p2003006F8C519F28421514A03F240DFB.dip0.t-ipconnect.de. [2003:6f:8c51:9f28:4215:14a0:3f24:dfb]) by smtp.gmail.com with ESMTPSA id q70-v6sm16558009wmd.45.2018.07.02.11.23.01 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 02 Jul 2018 11:23:01 -0700 (PDT) From: Fabio Coatti To: Christoph Hellwig Cc: LKML , Greg Kroah-Hartman Subject: Re: iwlwifi problem with iommu/intel-iommu: Enable CONFIG_DMA_DIRECT_OPS=y and clean up intel_{alloc,free}_coherent() Date: Mon, 02 Jul 2018 20:23:00 +0200 Message-ID: <2006717.WYUGMmW7i0@hobbes> In-Reply-To: <20180702131951.GA5786@lst.de> References: <1537224.nkESeFtY4z@hobbes> <20180702131951.GA5786@lst.de> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Monday 2 July 2018 15:19:51 CEST Christoph Hellwig wrote: > > By reverting this commit the card works again, tested in 4.17.3 . I've > > noticed that the corresponding amd commit ( > > b468620f2a1dfdcfddfd6fa54367b8bcc1b51248) has been reverted in linus tree > > (e16c4790de39dc861b749674c2a9319507f6f64f), and 4.16.X stable tree iirc, > > but the intel one has not been reverted. > > > > hw: Lenovo P50 Intel(R) Core(TM) i7-6820HQ CPU @ 2.70GHz > > > > Please let me know if more details are needed, but CC: me as I'm not > > currently subscribed to LKML. > > It probablty is the same issue. Did you check if you can just revert > the commit cleanly on top of current mainline and that fixes the issue > for you? Yep, it does. I issued a git revert d657c5c73ca987214a6f9436e435b34fc60f332a on mainline (4.18-rc3) and recompiled, the card works just fine.