From patchwork Tue Feb 13 18:28:31 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eric Auger X-Patchwork-Id: 13555489 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 536EDC48260 for ; Tue, 13 Feb 2024 18:31:21 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rZxXg-0006hx-Pq; Tue, 13 Feb 2024 13:30:04 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rZxXe-0006hV-8E for qemu-devel@nongnu.org; Tue, 13 Feb 2024 13:30:03 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rZxXb-0001uY-UW for qemu-devel@nongnu.org; Tue, 13 Feb 2024 13:30:01 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1707848999; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=QIDmTnaAUiishdIiFaeP/BW6AbE5AkNMCdkImrTN2v0=; b=Cj+BMt0dAxXSnqABLMLvCLK0WDtOPr3VViRm8F4wKb8IsTlcudYiakAt2DvX2SNy58YKjo 9qI8LB4KTaSlDdsCikOzhyoPSYN+QksZrvsJfnzgQ1ibOfXrbHR93xld0qqytT/L0KkSIu MnzlJejbz9jNYoseGMKkSvoKNVYeqII= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-257-UNU4iw8WN_albE_ioc9_5g-1; Tue, 13 Feb 2024 13:29:56 -0500 X-MC-Unique: UNU4iw8WN_albE_ioc9_5g-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id C6A1C863061; Tue, 13 Feb 2024 18:29:55 +0000 (UTC) Received: from laptop.redhat.com (unknown [10.39.193.101]) by smtp.corp.redhat.com (Postfix) with ESMTP id B648F40D1B60; Tue, 13 Feb 2024 18:29:52 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, qemu-devel@nongnu.org, qemu-arm@nongnu.org, jean-philippe@linaro.org, mst@redhat.com, peter.maydell@linaro.org, clg@redhat.com, zhenzhong.duan@intel.com, yanghliu@redhat.com Cc: alex.williamson@redhat.com, jasowang@redhat.com Subject: [PATCH v4 4/4] qemu-options.hx: Add an entry for virtio-iommu-pci and document aw-bits Date: Tue, 13 Feb 2024 19:28:31 +0100 Message-ID: <20240213182933.825268-5-eric.auger@redhat.com> In-Reply-To: <20240213182933.825268-1-eric.auger@redhat.com> References: <20240213182933.825268-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.2 Received-SPF: pass client-ip=170.10.129.124; envelope-from=eric.auger@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -25 X-Spam_score: -2.6 X-Spam_bar: -- X-Spam_report: (-2.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.504, 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_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org We are missing an entry for the virtio-iommu-pci device. Add the information on which machine it is currently supported and document the new aw-bits option. Signed-off-by: Eric Auger Reviewed-by: Cédric Le Goater --- qemu-options.hx | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/qemu-options.hx b/qemu-options.hx index 8547254dbf..6a8c970640 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -1172,6 +1172,14 @@ SRST Please also refer to the wiki page for general scenarios of VT-d emulation in QEMU: https://wiki.qemu.org/Features/VT-d. +``-device virtio-iommu-pci[,option=...]`` + This is only supported by ``-machine q35`` and ``-machine virt``. + It supports below options: + + ``aw-bits=val`` (val between 32 and 64, default depends on machine) + This decides the address width of IOVA address space. With + q35 it defaults to 39 bits. On arm virt it defaults to 48 bits. + ERST DEF("name", HAS_ARG, QEMU_OPTION_name,