From nobody Wed May 8 19:40:07 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1573834799; cv=none; d=zoho.com; s=zohoarc; b=bMl1uOBBp06FEKwh5HpOCyxf9Q3BFKg3WkXM9cUiC9mVA02lNEflBbX0caU9wyRiohpHxtjRsR+vd6L0WfSMpzjDhtFThKrJLwwwR7/L5dFnxHGG/3utm/ibkJxknufQlqMPAzkmScPWQOfDl9buuVUwM1UxEgXOjwsMKYC5lCQ= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1573834799; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=FOwlAYHOTjYOMcGKDZ8yJvfBbJmA7j/FyCrJYrukFS8=; b=JduGm98gLIL1PIzL4ewyeKY/SYetUhho2YikYyOegDSxpGauqhvmW7TusBYqX1minmdvE0CnX/gywSjyuGM1kapySKBiH6WlHZjIFdd9YbwaPyNsmbQ8HquVKnw37St2PH91uf2kSSJ5NZ92cCvOqlyaoBXun+ra11ZS4pngZ9s= ARC-Authentication-Results: i=1; mx.zoho.com; dkim=fail; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 157383479947656.69154476559777; Fri, 15 Nov 2019 08:19:59 -0800 (PST) Received: from localhost ([::1]:41400 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iVeKE-0004Kc-Df for importer@patchew.org; Fri, 15 Nov 2019 11:19:58 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:50121) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iVeEm-000722-T5 for qemu-devel@nongnu.org; Fri, 15 Nov 2019 11:14:21 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iVeEk-0002yN-SC for qemu-devel@nongnu.org; Fri, 15 Nov 2019 11:14:19 -0500 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:36366 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iVeEk-0002xr-OT for qemu-devel@nongnu.org; Fri, 15 Nov 2019 11:14:18 -0500 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-277-e8q_RBReNO2_nEyTthrbvw-1; Fri, 15 Nov 2019 11:13:45 -0500 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 539EF8EF28A for ; Fri, 15 Nov 2019 16:13:44 +0000 (UTC) Received: from dritchie.redhat.com (unknown [10.33.36.15]) by smtp.corp.redhat.com (Postfix) with ESMTP id 505005E263; Fri, 15 Nov 2019 16:13:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1573834457; h=from:from: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=FOwlAYHOTjYOMcGKDZ8yJvfBbJmA7j/FyCrJYrukFS8=; b=Ht0IsBH9Q9AQ+4KGYHP0uAXI7TM5aDDRrwwjmDRbq93Tl7NS5mvJoZ+Ba5Vyb3P06+k8rk pJSW8n0uDJ9cq8CrKbDXcDc4UjWNVmzrgXo6Cn83BHIimuUgB1msMqepDSO6T0vLgsquxD kwvz7E/Tt65zxSTe1TPCXv38VJZrNWo= From: Sergio Lopez To: qemu-devel@nongnu.org Subject: [PATCH 1/2] docs/microvm.rst: fix alignment in "Limitations" Date: Fri, 15 Nov 2019 17:13:37 +0100 Message-Id: <20191115161338.42864-2-slp@redhat.com> In-Reply-To: <20191115161338.42864-1-slp@redhat.com> References: <20191115161338.42864-1-slp@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-MC-Unique: e8q_RBReNO2_nEyTthrbvw-1 X-Mimecast-Spam-Score: 0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.120 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: Paolo Bonzini , Sergio Lopez Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" Fix the alignment of the items in the "Limitations" section. Signed-off-by: Sergio Lopez --- docs/microvm.rst | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/docs/microvm.rst b/docs/microvm.rst index aae811a922..4cf84746b9 100644 --- a/docs/microvm.rst +++ b/docs/microvm.rst @@ -33,9 +33,9 @@ Limitations =20 Currently, microvm does *not* support the following features: =20 - - PCI-only devices. - - Hotplug of any kind. - - Live migration across QEMU versions. +- PCI-only devices. +- Hotplug of any kind. +- Live migration across QEMU versions. =20 =20 Using the microvm machine type --=20 2.23.0 From nobody Wed May 8 19:40:07 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; 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dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1573834545601451.13802729834026; Fri, 15 Nov 2019 08:15:45 -0800 (PST) Received: from localhost ([::1]:41350 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iVeG8-0008WO-B0 for importer@patchew.org; Fri, 15 Nov 2019 11:15:44 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:49964) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iVeEI-0006UI-Uc for qemu-devel@nongnu.org; Fri, 15 Nov 2019 11:13:51 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iVeEH-0002kr-Na for qemu-devel@nongnu.org; Fri, 15 Nov 2019 11:13:50 -0500 Received: from us-smtp-2.mimecast.com ([205.139.110.61]:44039 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iVeEH-0002j9-Jx for qemu-devel@nongnu.org; Fri, 15 Nov 2019 11:13:49 -0500 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-320-aT8f6FSvPE6hhFDDbNdb1w-1; Fri, 15 Nov 2019 11:13:46 -0500 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id B0A4C10832A5 for ; Fri, 15 Nov 2019 16:13:45 +0000 (UTC) Received: from dritchie.redhat.com (unknown [10.33.36.15]) by smtp.corp.redhat.com (Postfix) with ESMTP id ADEF15ED29; Fri, 15 Nov 2019 16:13:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1573834427; h=from:from: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=aJ8AgVP7ItkR5Ul/UyuU0SvDmcwXtFrRgDShktO4bLk=; b=PR0sXXMeMesGfP+mdde8TvtBdpIbx7cHGlnrFUMt8u3cAQYpgZHA8/b848VS1bImYzVA81 Ru8YwHejIuxoPWRwT6coPy1u6bd1Hll9D+z1r9/6SecnjnU549gYCoLXQrumuxJmiAqFqv rmEHI2qPkO1vbF2yLbM2AwIr6DTs6PY= From: Sergio Lopez To: qemu-devel@nongnu.org Subject: [PATCH 2/2] docs/microvm.rst: add instructions for shutting down the guest Date: Fri, 15 Nov 2019 17:13:38 +0100 Message-Id: <20191115161338.42864-3-slp@redhat.com> In-Reply-To: <20191115161338.42864-1-slp@redhat.com> References: <20191115161338.42864-1-slp@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-MC-Unique: aT8f6FSvPE6hhFDDbNdb1w-1 X-Mimecast-Spam-Score: 0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 205.139.110.61 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: Paolo Bonzini , Sergio Lopez Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" Add a new section explaining the particularities of the microvm machine type for triggering a guest-initiated shut down. Signed-off-by: Sergio Lopez --- docs/microvm.rst | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/docs/microvm.rst b/docs/microvm.rst index 4cf84746b9..fcf41fc1f6 100644 --- a/docs/microvm.rst +++ b/docs/microvm.rst @@ -106,3 +106,24 @@ disabled:: -device virtio-blk-device,drive=3Dtest \ -netdev tap,id=3Dtap0,script=3Dno,downscript=3Dno \ -device virtio-net-device,netdev=3Dtap0 + + +Triggering a guest-initiated shut down +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +As the microvm machine type includes just a small set of system +devices, some x86 mechanisms for rebooting or shutting down the +system, like sending a key sequence to the keyboard or writing to an +ACPI register, doesn't have any effect in the VM. + +The recommended way to trigger a guest-initiated shut down is by +generating a ``triple-fault``, which will cause the VM to initiate a +reboot. Additionally, if the ``-no-reboot`` argument is present in the +command line, QEMU will detect this event and terminate its own +execution gracefully. + +Linux does support this mechanism, but by default will only be used +after other options have been tried and failed, causing the reboot to +be delayed by a small number of seconds. It's possible to instruct it +to try the triple-fault mechanism first, by adding ``reboot=3Dt`` to the +kernel's command line. --=20 2.23.0