From nobody Wed Nov 12 05:28:11 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1568364258; cv=none; d=zoho.com; s=zohoarc; b=Nv4V3iuvzeRjYMAHB5zSnz8OkduOPPnduWCj8E4QDd0kBlMy8ElNYep7m4AtcanSpjb54kwpz53KcGUWedKRFioqd6uMXVB5UrMwMFnVAq8sPBUwvYLyaOpKfVxDivf293dkIoXDFTF5035Fk/i5Tg3h3KI+nyyMoeBgtTqUZ+g= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1568364258; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To:ARC-Authentication-Results; bh=dXuZIba3IHNaGBtDbBt2pmvhrEw6RdPsx/vKf8BwbOA=; b=bZzFjJpViVC98FNHySqGz2FnWT+TGbXTscmENd64eKeTfqm1eMclBcSKWcrKu/Bwraxo11/bvO690z4ttwxyurP5+FdUX/xip/xakUyIZDp+gZol6wqNaKOLWJFmuZZtt/kEu2+pys73br3cGtu6k3tDYNqzcYhqJibrn80uOhM= ARC-Authentication-Results: i=1; mx.zoho.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (209.51.188.17 [209.51.188.17]) by mx.zohomail.com with SMTPS id 1568364258461528.9654894532923; Fri, 13 Sep 2019 01:44:18 -0700 (PDT) Received: from localhost ([::1]:41380 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1i8hBX-0004jp-QR for importer@patchew.org; Fri, 13 Sep 2019 04:44:07 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:46467) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1i8h4v-00066n-9z for qemu-devel@nongnu.org; Fri, 13 Sep 2019 04:37:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1i8h4u-0008J0-Ay for qemu-devel@nongnu.org; Fri, 13 Sep 2019 04:37:17 -0400 Received: from mx1.redhat.com ([209.132.183.28]:50080) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1i8h4s-0008HU-3H; Fri, 13 Sep 2019 04:37:14 -0400 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 6795D18CB8EA; Fri, 13 Sep 2019 08:37:13 +0000 (UTC) Received: from laptop.redhat.com (ovpn-116-33.ams2.redhat.com [10.36.116.33]) by smtp.corp.redhat.com (Postfix) with ESMTP id 03A4C60F80; Fri, 13 Sep 2019 08:36:57 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, qemu-devel@nongnu.org, qemu-arm@nongnu.org, peter.maydell@linaro.org, pbonzini@redhat.com, alex.williamson@redhat.com, peterx@redhat.com Date: Fri, 13 Sep 2019 10:36:14 +0200 Message-Id: <20190913083615.14719-6-eric.auger@redhat.com> In-Reply-To: <20190913083615.14719-1-eric.auger@redhat.com> References: <20190913083615.14719-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.6.2 (mx1.redhat.com [10.5.110.63]); Fri, 13 Sep 2019 08:37:13 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v1 5/6] intel_iommu: Let vtd_iommu_notify_flag_changed() fail 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: mst@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" In case a MAP notifier is attempted to be registered without caching mode, let's simply return an error. This latter now is handled in the VFIO code. Signed-off-by: Eric Auger --- hw/i386/intel_iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index 7a89ea9ba1..2f66d6882c 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -2931,7 +2931,7 @@ static int vtd_iommu_notify_flag_changed(IOMMUMemoryR= egion *iommu, if (!s->caching_mode && new & IOMMU_NOTIFIER_MAP) { error_report("We need to set caching-mode=3Don for intel-iommu to = enable " "device assignment with IOMMU protection."); - exit(1); + return -EINVAL; } =20 /* Update per-address-space notifier flags */ --=20 2.20.1