From 8030666bff991a7bb30bdfb441ad75709c19c26e Mon Sep 17 00:00:00 2001 From: Luiz Capitulino Date: Mon, 5 Mar 2012 12:56:58 -0500 Subject: [PATCH 95/98] qemu-ga: add guest-suspend-ram Signed-off-by: Luiz Capitulino Signed-off-by: Jeff Cody RHEL6 Note: Although this is not yet accepted upstream, here is the submitted patch upstream that was used: http://lists.nongnu.org/archive/html/qemu-devel/2012-02/msg03907.html Signed-off-by: Michal Novotny --- 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 266a414..18e554e 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 41d2d55..f140a5d 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) { -- 1.7.7.6