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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 353D7C433F5 for ; Fri, 12 Nov 2021 17:55:35 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id B791460EBD for ; Fri, 12 Nov 2021 17:55:34 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org B791460EBD Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:35932 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mlalx-0002nF-GB for qemu-devel@archiver.kernel.org; Fri, 12 Nov 2021 12:55:33 -0500 Received: from eggs.gnu.org ([209.51.188.92]:38740) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mlakX-0001uo-OS for qemu-devel@nongnu.org; Fri, 12 Nov 2021 12:54:05 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:24203) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mlakU-0003XZ-EJ for qemu-devel@nongnu.org; Fri, 12 Nov 2021 12:54:04 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1636739635; 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=8vFdjrq0fXhtiAoX6780dYCZ8d+uF0hswdrZyaVOiEs=; b=TLoPCfQJuGDOtU6cVk/6gFskwNPFsamSEz9mF/hvf58Iu+BRJ0n+qqMaLM+twePyP66NwT 9EIz1GBRT+4qrIcYKnF9qjtCorhrrB7YaH1IFCYbD7QqbCrqaK7lrOlFCFr3ygzYGYwMXh IXoaKt4oLpNZrL/Wn0PPzQQapQUtfvc= 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-388-Ke042Tt2Mn2PkMoegWb6tQ-1; Fri, 12 Nov 2021 12:53:48 -0500 X-MC-Unique: Ke042Tt2Mn2PkMoegWb6tQ-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id DAA3DC747C; Fri, 12 Nov 2021 17:53:46 +0000 (UTC) Received: from redhat.com (unknown [10.33.36.12]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 64BD55F4EA; Fri, 12 Nov 2021 17:53:45 +0000 (UTC) Date: Fri, 12 Nov 2021 17:53:42 +0000 From: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= To: brak@gameservers.com Subject: Re: Guests wont start with 15 pcie-root-port devices Message-ID: References: MIME-Version: 1.0 In-Reply-To: User-Agent: Mutt/2.0.7 (2021-05-04) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=berrange@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=170.10.133.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -34 X-Spam_score: -3.5 X-Spam_bar: --- X-Spam_report: (-3.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.699, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham 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: , Reply-To: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= Cc: qemu-devel Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Fri, Nov 12, 2021 at 12:35:07PM -0500, Brian Rak wrote: > In 6.1, a guest with 15 empty pcie-root-port devices will not boot properly > - it just hangs on "Guest has not initialized the display (yet).".  As soon > as I remove the last pcie-root-port, the guest begins starting up normally.  Yes, QEMU 6.1 has a regression https://gitlab.com/qemu-project/qemu/-/issues/641 > commit e2a6290aab578b2170c1f5909fa556385dc0d820 > Author: Marcel Apfelbaum > Date:   Mon Aug 2 12:00:57 2021 +0300 > >     hw/pcie-root-port: Fix hotplug for PCI devices requiring IO > > Although I can't say I really understand why that commit triggered it. It caused the firmware to always allocate I/O space for every port and there's limited total I/O space, so it runs out at 15 devices. Regards, Daniel -- |: 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 :|