Received: by 2002:a05:6a10:8c0a:0:0:0:0 with SMTP id go10csp5107127pxb; Mon, 15 Feb 2021 09:38:19 -0800 (PST) X-Google-Smtp-Source: ABdhPJxjTbSdaxS9MB3xkOLE+f6fTR2V6Vpk4Bf4sF+S/t/dQnae24cI1FFgvKZ68K10Y1DRC2PC X-Received: by 2002:a17:906:c049:: with SMTP id bm9mr16256721ejb.535.1613410698859; Mon, 15 Feb 2021 09:38:18 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1613410698; cv=none; d=google.com; s=arc-20160816; b=cX8tbudxEDxMy6CrIs8UQJZ3oC8+PivT2f535xyNa8J+gPuShlRwcYSO8E9oiv2jIF BjgzubAtd2CKh+ih+AcX2a58j//geFbninNfbnvTQFCDrWQohaEBH28bF+vWdjA0QKgg dRR13oRr83BWdNinVpaTXFLNQi5cFVXRv9ESzpa+DJpB6E7y2fNSPeceqf5qTXOJboI1 AMAVqCacm0WEpMXRiyQNioDjP8tBvLj4F6JOiemtkKeAPtklaM8+uJ5oewLkTg++lctt z213UPco+URCAHkOIZekuLtWrAvsnElptIOQ/CT8OBZqbn/12yWRRmz0CNYuINInCt/m m3YQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:content-language :mime-version:user-agent:date:message-id:subject:from:cc:to; bh=LFRUFBMygHQQZIctDqrcMgwQIocoGIjd9BskjhCx5ss=; b=kna1hgyMlj36VBx7whlNhU7zs5ftVssRX0hgRj9XsBtHRwPBpq1yZ2vgOTzmyMmkwA uqKAvT8PPxKhIaq1kM/hdlJFC0go4Z8+jyRtekQChzL4KUAmjO172o57VtJs37nxyxBy OCi1+b8vMCDn1qTUjWWgETu8wp2Lomnu+kyRBR5R0AjXt9/+YOzILdTTL6PGzKawm8WJ PMHdFlMq8WnLFpD4gAgHaen470JHeIHtKzmu+Gyv0ZzucSo2j3gGUV6sYj69g+IrLnsC sqOwLAG62RmonG6WORM6qPWIX6vISTdsP82a0uCAkLjuOqWoa02JEWmNaI/qvdOcoSM+ qaEg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id h24si13727283ejt.11.2021.02.15.09.37.54; Mon, 15 Feb 2021 09:38:18 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231192AbhBORhV (ORCPT + 99 others); Mon, 15 Feb 2021 12:37:21 -0500 Received: from mx3.molgen.mpg.de ([141.14.17.11]:54923 "EHLO mx1.molgen.mpg.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S231555AbhBOQyr (ORCPT ); Mon, 15 Feb 2021 11:54:47 -0500 Received: from [192.168.0.6] (unknown [95.90.234.157]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: pmenzel) by mx.molgen.mpg.de (Postfix) with ESMTPSA id B07A520647913; Mon, 15 Feb 2021 17:53:51 +0100 (CET) To: Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org, Bjorn Helgaas Cc: linux-pci@vger.kernel.org, LKML , it+x86@molgen.mpg.de From: Paul Menzel Subject: acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended PCI configuration space under this bridge. Message-ID: Date: Mon, 15 Feb 2021 17:53:51 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.7.1 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Dear Linux folks, All the way up to QEMU emulator version 5.2.0 (Debian 1:5.2+dfsg-5) and Linux 5.10.13, Linux logs the warning below: acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended PCI configuration space under this bridge. One way to reproduce it: qemu-system-x86_64 -enable-kvm -m 2G -hda /dev/shm/debian.img -kernel /boot/vmlinuz-5.10.0-3-amd64 -initrd /boot/initrd.img-5.10.0-3-amd64 -append root="/dev/sda1 console=ttyS0,115200" -serial stdio Please find more details and the full log in the Bugzilla issue #211765 [1]. Kind regards, Paul [1]: https://bugzilla.kernel.org/show_bug.cgi?id=211765 "[Bug 211765] acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended PCI configuration space under this bridge."