[PATCH V2 08/22] cpr: QMP interfaces

From: Steve Sistare <steven.sistare@oracle.com>
To: qemu-devel@nongnu.org
Cc: "Daniel P. Berrange" <berrange@redhat.com>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	"Jason Zeng" <jason.zeng@linux.intel.com>,
	"Alex Bennée" <alex.bennee@linaro.org>,
	"Juan Quintela" <quintela@redhat.com>,
	"Dr. David Alan Gilbert" <dgilbert@redhat.com>,
	"Markus Armbruster" <armbru@redhat.com>,
	"Alex Williamson" <alex.williamson@redhat.com>,
	"Steve Sistare" <steven.sistare@oracle.com>,
	"Stefan Hajnoczi" <stefanha@redhat.com>,
	"Marc-André Lureau" <marcandre.lureau@redhat.com>,
	"Paolo Bonzini" <pbonzini@redhat.com>,
	"Philippe Mathieu-Daudé" <philmd@redhat.com>
Subject: [PATCH V2 08/22] cpr: QMP interfaces
Date: Tue,  5 Jan 2021 07:41:56 -0800	[thread overview]
Message-ID: <1609861330-129855-9-git-send-email-steven.sistare@oracle.com> (raw)
In-Reply-To: <1609861330-129855-1-git-send-email-steven.sistare@oracle.com>

cprsave calls cprsave().  Syntax:
  { 'enum': 'CprMode', 'data': [ 'reboot', 'restart' ] }
  { 'command': 'cprsave', 'data': { 'file': 'str', 'mode': 'CprMode' } }

cprload calls cprload().  Syntax:
  { 'command': 'cprload', 'data': { 'file': 'str' } }

cprinfo returns a list of supported modes.  Syntax:
  { 'struct': 'CprInfo', 'data': { 'modes': [ 'CprMode' ] } }
  { 'command': 'cprinfo', 'returns': 'CprInfo' }

Signed-off-by: Mark Kanda <mark.kanda@oracle.com>
Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
---
 monitor/qmp-cmds.c    | 31 +++++++++++++++++++++++
 qapi/Makefile.objs    |  3 ++-
 qapi/cpr.json         | 68 +++++++++++++++++++++++++++++++++++++++++++++++++++
 qapi/qapi-schema.json |  1 +
 4 files changed, 102 insertions(+), 1 deletion(-)
 create mode 100644 qapi/cpr.json

diff --git a/monitor/qmp-cmds.c b/monitor/qmp-cmds.c
index 864cbfa..3778b04 100644
--- a/monitor/qmp-cmds.c
+++ b/monitor/qmp-cmds.c
@@ -35,9 +35,11 @@
 #include "qapi/qapi-commands-machine.h"
 #include "qapi/qapi-commands-misc.h"
 #include "qapi/qapi-commands-ui.h"
+#include "qapi/qapi-commands-cpr.h"
 #include "qapi/qmp/qerror.h"
 #include "hw/mem/memory-device.h"
 #include "hw/acpi/acpi_dev_interface.h"
+#include "migration/cpr.h"
 
 NameInfo *qmp_query_name(Error **errp)
 {
@@ -161,6 +163,35 @@ void qmp_cont(Error **errp)
     }
 }
 
+CprInfo *qmp_cprinfo(Error **errp)
+{
+    CprInfo *cprinfo;
+    CprModeList *mode, *mode_list = NULL;
+    CprMode i;
+
+    cprinfo = g_malloc0(sizeof(*cprinfo));
+
+    for (i = 0; i < CPR_MODE__MAX; i++) {
+        mode = g_malloc0(sizeof(*mode));
+        mode->value = i;
+        mode->next = mode_list;
+        mode_list = mode;
+    }
+
+    cprinfo->modes = mode_list;
+    return cprinfo;
+}
+
+void qmp_cprsave(const char *file, CprMode mode, Error **errp)
+{
+    cprsave(file, mode, errp);
+}
+
+void qmp_cprload(const char *file, Error **errp)
+{
+    cprload(file, errp);
+}
+
 void qmp_system_wakeup(Error **errp)
 {
     if (!qemu_wakeup_suspend_enabled()) {
diff --git a/qapi/Makefile.objs b/qapi/Makefile.objs
index 4673ab7..099b325 100644
--- a/qapi/Makefile.objs
+++ b/qapi/Makefile.objs
@@ -5,7 +5,8 @@ util-obj-y += opts-visitor.o qapi-clone-visitor.o
 util-obj-y += qmp-event.o
 util-obj-y += qapi-util.o
 
-QAPI_COMMON_MODULES = audio authz block-core block char common control crypto
+QAPI_COMMON_MODULES = audio authz block-core block char
+QAPI_COMMON_MODULES += common cpr control crypto
 QAPI_COMMON_MODULES += dump error introspect job machine migration misc
 QAPI_COMMON_MODULES += net pragma qdev qom rdma rocker run-state sockets tpm
 QAPI_COMMON_MODULES += trace transaction ui
diff --git a/qapi/cpr.json b/qapi/cpr.json
new file mode 100644
index 0000000..588749f
--- /dev/null
+++ b/qapi/cpr.json
@@ -0,0 +1,68 @@
+# -*- Mode: Python -*-
+#
+# Copyright (c) 2021 Oracle and/or its affiliates.
+#
+# This work is licensed under the terms of the GNU GPL, version 2.
+# See the COPYING file in the top-level directory.
+
+##
+# = CPR
+##
+
+{ 'include': 'common.json' }
+
+##
+# @CprMode:
+#
+# @reboot: checkpoint can be cprload'ed after a host kexec reboot.
+#
+# @restart: checkpoint can be cprload'ed after restarting qemu.
+#
+# Since 5.3
+##
+{ 'enum': 'CprMode', 'data': [ 'reboot', 'restart' ] }
+
+
+##
+# @CprInfo:
+#
+# @modes: @CprMode list
+#
+# Since 5.3
+##
+{ 'struct': 'CprInfo', 'data': { 'modes': [ 'CprMode' ] } }
+
+##
+# @cprinfo:
+#
+# Returns: @CprInfo
+#
+# Since 5.3
+##
+{ 'command': 'cprinfo', 'returns': 'CprInfo' }
+
+##
+# @cprsave:
+#
+# Create a checkpoint of the virtual machine device state in @file.
+# Guest RAM and guest block device blocks are not saved.
+#
+# @file: name of checkpoint file
+# @mode: @CprMode mode
+#
+# Since 5.3
+##
+{ 'command': 'cprsave', 'data': { 'file': 'str', 'mode': 'CprMode' } }
+
+##
+# @cprload:
+#
+# Start virtual machine from checkpoint file that was created earlier using
+# the cprsave command.
+#
+# @file: name of checkpoint file
+#
+# Since 5.3
+##
+{ 'command': 'cprload', 'data': { 'file': 'str' } }
+
diff --git a/qapi/qapi-schema.json b/qapi/qapi-schema.json
index f03ff91..0d47ab6 100644
--- a/qapi/qapi-schema.json
+++ b/qapi/qapi-schema.json
@@ -74,6 +74,7 @@
 { 'include': 'ui.json' }
 { 'include': 'authz.json' }
 { 'include': 'migration.json' }
+{ 'include': 'cpr.json' }
 { 'include': 'transaction.json' }
 { 'include': 'trace.json' }
 { 'include': 'control.json' }
-- 
1.8.3.1


