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=-8.0 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_2 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 ABA46C433DF for ; Tue, 13 Oct 2020 09:17:10 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (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 A5CE7214DB for ; Tue, 13 Oct 2020 09:17:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="1nziDY6W" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A5CE7214DB Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id 02EB387B1A; Tue, 13 Oct 2020 09:17:09 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from hemlock.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id wKKHVM8kuPtg; Tue, 13 Oct 2020 09:17:08 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by hemlock.osuosl.org (Postfix) with ESMTP id 7A7DF87A81; Tue, 13 Oct 2020 09:17:08 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 5EA45C07FF; Tue, 13 Oct 2020 09:17:08 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists.linuxfoundation.org (Postfix) with ESMTP id 22B85C0051 for ; Tue, 13 Oct 2020 09:17:07 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id 113B187A81 for ; Tue, 13 Oct 2020 09:17:07 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from hemlock.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id aDQegqeBy+-5 for ; Tue, 13 Oct 2020 09:17:06 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by hemlock.osuosl.org (Postfix) with ESMTPS id 2AB9187ABB for ; Tue, 13 Oct 2020 09:17:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.20170209; h=Mime-Version:Content-Type:References: In-Reply-To:Date:Cc:To:From:Subject:Message-ID:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=Cror/4YAHtl2GLF8gbEGI9g0cnQ/P2QupDEC8+Ofr/0=; b=1nziDY6WaI5PYMiFS2vFPIU4CB LKAWESp1jrbp4yIskK+tn+lfqvkiEg+Af4WtKQZoGbNEgiDtiyUrmOsI3vGsY3XOdZp4dtAsCb2ot WbfkRjSjJ9BGN4wLh/u0qkzxrXktOO86HB/O+6VzNrmWqOPvM2yJWfTyB78ZtOo3vKbdAPTS3X/6c 4Vq1Go+jYZbfmV4lIqE+ZAKVwoT6bQk/AVT1R5ERi7EwSAG2SS+IEWHvh9Sq4eUXPhpbVCx7PuRaK eALgp9K5+wl5h7D/dAsVnIt7/pAM7av+E9fqA/j1Goe1/fCh/M6jlmeW0r98oQlNGbadxIOvU6tOV 6+0HKx7g==; Received: from 54-240-197-239.amazon.com ([54.240.197.239] helo=u3832b3a9db3152.ant.amazon.com) by merlin.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kSGQW-0003ed-T1; Tue, 13 Oct 2020 09:17:01 +0000 Message-ID: Subject: Re: [PATCH next] iommu: intel: don't dereference iommu_device if IOMMU_API is not built From: David Woodhouse To: Bartosz Golaszewski , Lu Baolu , Joerg Roedel Date: Tue, 13 Oct 2020 10:16:58 +0100 In-Reply-To: <20201013073055.11262-1-brgl@bgdev.pl> References: <20201013073055.11262-1-brgl@bgdev.pl> X-Mailer: Evolution 3.28.5-0ubuntu0.18.04.2 Mime-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by merlin.infradead.org. See http://www.infradead.org/rpr.html Cc: Bartosz Golaszewski , iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============7321193603300365487==" Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" --===============7321193603300365487== Content-Type: multipart/signed; micalg="sha-256"; protocol="application/x-pkcs7-signature"; boundary="=-tWhkBBfeNNwyvNLMBxAZ" --=-tWhkBBfeNNwyvNLMBxAZ Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Tue, 2020-10-13 at 09:30 +0200, Bartosz Golaszewski wrote: > From: Bartosz Golaszewski >=20 > Since commit c40aaaac1018 ("iommu/vt-d: Gracefully handle DMAR units > with no supported address widths") dmar.c needs struct iommu_device to > be selected. We can drop this dependency by not dereferencing struct > iommu_device if IOMMU_API is not selected and by reusing the information > stored in iommu->drhd->ignored instead. >=20 > This fixes the following build error when IOMMU_API is not selected: >=20 > drivers/iommu/intel/dmar.c: In function =E2=80=98free_iommu=E2=80=99: > drivers/iommu/intel/dmar.c:1139:41: error: =E2=80=98struct iommu_device= =E2=80=99 has no member named =E2=80=98ops=E2=80=99 > 1139 | if (intel_iommu_enabled && iommu->iommu.ops) { > ^ >=20 > Fixes: c40aaaac1018 ("iommu/vt-d: Gracefully handle DMAR units with no su= pported address widths") > Signed-off-by: Bartosz Golaszewski Oops, apologies for that. Thanks for fixing it. 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