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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 46A95C432C2 for ; Wed, 25 Sep 2019 08:00:08 +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 1E701214D9 for ; Wed, 25 Sep 2019 08:00:07 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1E701214D9 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:46896 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iD2DV-0007rI-Ih for qemu-devel@archiver.kernel.org; Wed, 25 Sep 2019 04:00:05 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:49284) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iD2Bz-0006qy-EJ for qemu-devel@nongnu.org; Wed, 25 Sep 2019 03:58:32 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iD2By-0007cS-Fb for qemu-devel@nongnu.org; Wed, 25 Sep 2019 03:58:31 -0400 Received: from mx1.redhat.com ([209.132.183.28]:60242) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iD2By-0007c1-8b for qemu-devel@nongnu.org; Wed, 25 Sep 2019 03:58:30 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id CE6778830A; Wed, 25 Sep 2019 07:58:28 +0000 (UTC) Received: from colo-mx.corp.redhat.com (colo-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.20]) by smtp.corp.redhat.com (Postfix) with ESMTPS id C514F60872; Wed, 25 Sep 2019 07:58:28 +0000 (UTC) Received: from zmail21.collab.prod.int.phx2.redhat.com (zmail21.collab.prod.int.phx2.redhat.com [10.5.83.24]) by colo-mx.corp.redhat.com (Postfix) with ESMTP id B0BA21808876; Wed, 25 Sep 2019 07:58:28 +0000 (UTC) Date: Wed, 25 Sep 2019 03:58:28 -0400 (EDT) From: Pankaj Gupta To: David Hildenbrand Message-ID: <432023601.2927575.1569398308205.JavaMail.zimbra@redhat.com> In-Reply-To: References: <20190924124433.96810-1-slp@redhat.com> Subject: Re: [PATCH v4 0/8] Introduce the microvm machine type MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Originating-IP: [10.67.116.223, 10.4.195.3] Thread-Topic: Introduce the microvm machine type Thread-Index: VOfRsAtu2e4i6aDKaq9jV9YIctSiGA== X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.28]); Wed, 25 Sep 2019 07:58:28 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 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: kvm@vger.kernel.org, ehabkost@redhat.com, Sergio Lopez , mst@redhat.com, lersek@redhat.com, mtosatti@redhat.com, qemu-devel@nongnu.org, kraxel@redhat.com, pbonzini@redhat.com, imammedo@redhat.com, philmd@redhat.com, rth@twiddle.net Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" > On 24.09.19 14:44, Sergio Lopez wrote: > > Microvm is a machine type inspired by both NEMU and Firecracker, and > > constructed after the machine model implemented by the latter. > > > > It's main purpose is providing users a minimalist machine type free > > from the burden of legacy compatibility, serving as a stepping stone > > for future projects aiming at improving boot times, reducing the > > attack surface and slimming down QEMU's footprint. > > > > The microvm machine type supports the following devices: > > > > - ISA bus > > - i8259 PIC > > - LAPIC (implicit if using KVM) > > - IOAPIC (defaults to kernel_irqchip_split = true) > > - i8254 PIT > > - MC146818 RTC (optional) > > - kvmclock (if using KVM) > > - fw_cfg > > - One ISA serial port (optional) > > - Up to eight virtio-mmio devices (configured by the user) > > So I assume also no ACPI (CPU/memory hotplug), correct? > > @Pankaj, I think it would make sense to make virtio-pmem play with > virtio-mmio/microvm. I agree. Its using virtio-blk device over a raw image. Similarly or alternatively(as an experiment) we can use virtio-pmem which will even reduce the guest memory footprint. Best regards, Pankaj > > -- > > Thanks, > > David / dhildenb >