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[209.51.188.17]) by mx.google.com with ESMTPS id p8si1183703qtq.104.2020.02.27.03.17.50 for (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 27 Feb 2020 03:17:51 -0800 (PST) Received-SPF: pass (google.com: domain of qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; Authentication-Results: mx.google.com; dkim=fail header.i=@redhat.com header.s=mimecast20190719 header.b="B/n7yag2"; spf=pass (google.com: domain of qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org"; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: from localhost ([::1]:57498 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j7HAr-0007cg-Ez for alex.bennee@linaro.org; Thu, 27 Feb 2020 06:17:49 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:34522) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j7HAg-0007c0-7g for qemu-arm@nongnu.org; Thu, 27 Feb 2020 06:17:39 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1j7HAe-0007zE-Gw for qemu-arm@nongnu.org; Thu, 27 Feb 2020 06:17:37 -0500 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:52770 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1j7HAe-0007yt-CA for qemu-arm@nongnu.org; Thu, 27 Feb 2020 06:17:36 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1582802255; h=from:from:reply-to: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=8/Qao5mVrMLtiFprpgRK9mpQ8H/RGFsXAG8L+fjZqCI=; b=B/n7yag2G89osl7BghQf1NnqGDtJ8rBueUwru58GIsNyHAKX7S9BN3Bqfpi+/yS1cluATQ K8WZw/z8zJ4R5+JnCvSW94SpjyWxPH/5X3IiFn026oLXqlkSan8Xkgnfhge3EbCQ8eUi2N 6IcHJNBUFWwkCnJI0AM4cFKbIxVgU8o= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-372-W2xLvMUCNqyqmdRH4pt75A-1; Thu, 27 Feb 2020 06:17:32 -0500 X-MC-Unique: W2xLvMUCNqyqmdRH4pt75A-1 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 mimecast-mx01.redhat.com (Postfix) with ESMTPS id 697281005512; Thu, 27 Feb 2020 11:17:31 +0000 (UTC) Received: from redhat.com (ovpn-112-43.ams2.redhat.com [10.36.112.43]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 2C4BF60BE2; Thu, 27 Feb 2020 11:17:20 +0000 (UTC) Date: Thu, 27 Feb 2020 11:17:17 +0000 From: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= To: Eric Auger Subject: Re: [PATCH v16 00/10] VIRTIO-IOMMU device Message-ID: <20200227111717.GG1645630@redhat.com> References: <20200214132745.23392-1-eric.auger@redhat.com> MIME-Version: 1.0 In-Reply-To: <20200214132745.23392-1-eric.auger@redhat.com> User-Agent: Mutt/1.13.3 (2020-01-12) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 205.139.110.120 X-BeenThere: qemu-arm@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= Cc: peter.maydell@linaro.org, kevin.tian@intel.com, tnowicki@marvell.com, jean-philippe@linaro.org, quintela@redhat.com, qemu-devel@nongnu.org, peterx@redhat.com, dgilbert@redhat.com, bharatb.linux@gmail.com, qemu-arm@nongnu.org, mst@redhat.com, eric.auger.pro@gmail.com Errors-To: qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org Sender: "Qemu-arm" X-TUID: /3NVKyDRakY9 On Fri, Feb 14, 2020 at 02:27:35PM +0100, Eric Auger wrote: > This series implements the QEMU virtio-iommu device. >=20 > This matches the v0.12 spec (voted) and the corresponding > virtio-iommu driver upstreamed in 5.3. All kernel dependencies > are resolved for DT integration. The virtio-iommu can be > instantiated in ARM virt using: >=20 > "-device virtio-iommu-pci". Is there any more documentation besides this ? I'm wondering on the intended usage of this, and its relation or pros/cons vs other iommu devices You mention Arm here, but can this virtio-iommu-pci be used on ppc64, s390x, x86_64 too ? If so, is it a better choice than using intel-iommu on x86_64 ? Anything else that is relevant for management applications to know about when using this ? Regards, Daniel --=20 |: https://berrange.com -o- https://www.flickr.com/photos/dberrange= :| |: https://libvirt.org -o- https://fstop138.berrange.com= :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange= :|