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 X-Spam-Level: X-Spam-Status: No, score=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1D7E9C3A59F for ; Thu, 29 Aug 2019 09:04:35 +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 E6B97215EA for ; Thu, 29 Aug 2019 09:04:34 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E6B97215EA Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:47064 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1i3GM5-0004Ef-Es for qemu-devel@archiver.kernel.org; Thu, 29 Aug 2019 05:04:33 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:33291) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1i3GJv-0002AG-QM for qemu-devel@nongnu.org; Thu, 29 Aug 2019 05:02:25 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1i3GJu-0001MC-Hk for qemu-devel@nongnu.org; Thu, 29 Aug 2019 05:02:19 -0400 Received: from mga07.intel.com ([134.134.136.100]:16861) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1i3GJu-0001AO-0x for qemu-devel@nongnu.org; Thu, 29 Aug 2019 05:02:18 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 29 Aug 2019 02:02:07 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,442,1559545200"; d="scan'208";a="264926291" Received: from liujing-mobl.ccr.corp.intel.com (HELO [10.238.129.23]) ([10.238.129.23]) by orsmga001.jf.intel.com with ESMTP; 29 Aug 2019 02:02:03 -0700 To: Sergio Lopez , mst@redhat.com, marcel.apfelbaum@gmail.com, pbonzini@redhat.com, rth@twiddle.net, ehabkost@redhat.com, maran.wilson@oracle.com, sgarzare@redhat.com, kraxel@redhat.com References: <20190702121106.28374-1-slp@redhat.com> From: Jing Liu Message-ID: <879c7f68-95a3-3bf6-cba8-d3465770d399@linux.intel.com> Date: Thu, 29 Aug 2019 17:02:02 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <20190702121106.28374-1-slp@redhat.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 134.134.136.100 Subject: Re: [Qemu-devel] [PATCH v3 0/4] Introduce the microvm machine type 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: qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Hi Sergio, The idea is interesting and I tried to launch a guest by your guide but seems failed to me. I tried both legacy and normal modes, but the vncviewer connected and told me that: The vm has no graphic display device. All the screen in vnc is just black. kernel config: CONFIG_KVM_MMIO=y CONFIG_VIRTIO_MMIO=y I don't know if any specified kernel version/patch/config is needed or anything I missed. Could you kindly give some tips? Thanks very much. Jing > A QEMU instance with the microvm machine type can be invoked this way: > > - Normal mode: > > qemu-system-x86_64 -M microvm -m 512m -smp 2 \ > -kernel vmlinux -append "console=hvc0 root=/dev/vda" \ > -nodefaults -no-user-config \ > -chardev pty,id=virtiocon0,server \ > -device virtio-serial-device \ > -device virtconsole,chardev=virtiocon0 \ > -drive id=test,file=test.img,format=raw,if=none \ > -device virtio-blk-device,drive=test \ > -netdev tap,id=tap0,script=no,downscript=no \ > -device virtio-net-device,netdev=tap0 > > - Legacy mode: > > qemu-system-x86_64 -M microvm,legacy -m 512m -smp 2 \ > -kernel vmlinux -append "console=ttyS0 root=/dev/vda" \ > -nodefaults -no-user-config \ > -drive id=test,file=test.img,format=raw,if=none \ > -device virtio-blk-device,drive=test \ > -netdev tap,id=tap0,script=no,downscript=no \ > -device virtio-net-device,netdev=tap0 \ > -serial stdio >