From patchwork Tue Feb 28 14:03:04 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luiz Capitulino X-Patchwork-Id: 143469 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id B3434B6EF1 for ; Wed, 29 Feb 2012 01:44:34 +1100 (EST) Received: from localhost ([::1]:35019 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1S2Nf1-0008Ui-BB for incoming@patchwork.ozlabs.org; Tue, 28 Feb 2012 09:04:11 -0500 Received: from eggs.gnu.org ([208.118.235.92]:34417) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1S2NeE-0006Hw-DW for qemu-devel@nongnu.org; Tue, 28 Feb 2012 09:03:28 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1S2Ne8-0007jr-Mj for qemu-devel@nongnu.org; Tue, 28 Feb 2012 09:03:21 -0500 Received: from mx1.redhat.com ([209.132.183.28]:24114) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1S2Ne8-0007jE-En for qemu-devel@nongnu.org; Tue, 28 Feb 2012 09:03:16 -0500 Received: from int-mx02.intmail.prod.int.phx2.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id q1SE3AiE001748 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Tue, 28 Feb 2012 09:03:10 -0500 Received: from localhost (ovpn-113-108.phx2.redhat.com [10.3.113.108]) by int-mx02.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id q1SE386m015952; Tue, 28 Feb 2012 09:03:09 -0500 From: Luiz Capitulino To: qemu-devel@nongnu.org Date: Tue, 28 Feb 2012 11:03:04 -0300 Message-Id: <1330437785-15912-3-git-send-email-lcapitulino@redhat.com> In-Reply-To: <1330437785-15912-1-git-send-email-lcapitulino@redhat.com> References: <1330437785-15912-1-git-send-email-lcapitulino@redhat.com> X-Scanned-By: MIMEDefang 2.67 on 10.5.11.12 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 209.132.183.28 Cc: amit.shah@redhat.com, mprivozn@redhat.com, jcody@redhat.com, eblake@redhat.com, mdroth@linux.vnet.ibm.com Subject: [Qemu-devel] [PATCH 2/3] qemu-ga: add guest-suspend-ram X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Signed-off-by: Luiz Capitulino --- qapi-schema-guest.json | 28 ++++++++++++++++++++++++++++ qga/commands-posix.c | 10 ++++++++++ 2 files changed, 38 insertions(+), 0 deletions(-) diff --git a/qapi-schema-guest.json b/qapi-schema-guest.json index f4e0e1d..b102311 100644 --- a/qapi-schema-guest.json +++ b/qapi-schema-guest.json @@ -319,3 +319,31 @@ # Since: 1.1 ## { 'command': 'guest-suspend-disk' } + +## +# @guest-suspend-ram +# +# Suspend guest to ram. +# +# This command tries to execute the scripts provided by the pm-utils package. +# If it's not available, the suspend operation will be performed by manually +# writing to a sysfs file. +# +# For the best results it's strongly recommended to have the pm-utils +# package installed in the guest. +# +# IMPORTANT: guest-suspend-ram requires QEMU to support the 'system_wakeup' +# command. Thus, it's *required* to query QEMU for the presence of the +# 'system_wakeup' command before issuing guest-suspend-ram. +# +# Returns: nothing on success +# If suspend to ram is not supported, Unsupported +# +# Notes: o This is an asynchronous request. There's no guarantee a response +# will be sent +# o It's strongly recommended to issue the guest-sync command before +# sending commands when the guest resumes +# +# Since: 1.1 +## +{ 'command': 'guest-suspend-ram' } diff --git a/qga/commands-posix.c b/qga/commands-posix.c index af785f5..134c130 100644 --- a/qga/commands-posix.c +++ b/qga/commands-posix.c @@ -705,6 +705,16 @@ void qmp_guest_suspend_disk(Error **err) guest_suspend("pm-hibernate", "disk", err); } +void qmp_guest_suspend_ram(Error **err) +{ + bios_supports_mode("pm-is-supported", "--suspend", "mem", err); + if (error_is_set(err)) { + return; + } + + guest_suspend("pm-suspend", "mem", err); +} + /* register init/cleanup routines for stateful command groups */ void ga_command_state_init(GAState *s, GACommandState *cs) {