[PATCH v10 15/31] tools/libx{l, c}: add postcopy/suspend callback to restore side

From: Wen Congyang <wency@cn.fujitsu.com>
To: xen devel <xen-devel@lists.xen.org>,
	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
	Andrew Cooper <andrew.cooper3@citrix.com>,
	Ian Campbell <ian.campbell@citrix.com>,
	Ian Jackson <ian.jackson@eu.citrix.com>,
	Wei Liu <wei.liu2@citrix.com>
Cc: Lars Kurth <lars.kurth@citrix.com>,
	Changlong Xie <xiecl.fnst@cn.fujitsu.com>,
	Wen Congyang <wency@cn.fujitsu.com>,
	Gui Jianfeng <guijianfeng@cn.fujitsu.com>,
	Jiang Yunhong <yunhong.jiang@intel.com>,
	Dong Eddie <eddie.dong@intel.com>,
	Shriram Rajagopalan <rshriram@cs.ubc.ca>,
	Yang Hongyang <hongyang.yang@easystack.cn>
Subject: [PATCH v10 15/31] tools/libx{l, c}: add postcopy/suspend callback to restore side
Date: Mon, 22 Feb 2016 10:52:19 +0800	[thread overview]
Message-ID: <1456109555-28299-16-git-send-email-wency@cn.fujitsu.com> (raw)
In-Reply-To: <1456109555-28299-1-git-send-email-wency@cn.fujitsu.com>

Secondary(restore side) is running under COLO, we also need
postcopy/suspend callbacks.

Signed-off-by: Yang Hongyang <hongyang.yang@easystack.cn>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
---
 tools/libxc/include/xenguest.h     | 10 ++++++++++
 tools/libxl/libxl_save_msgs_gen.pl |  4 ++--
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/tools/libxc/include/xenguest.h b/tools/libxc/include/xenguest.h
index f598bec..cb0bbcf 100644
--- a/tools/libxc/include/xenguest.h
+++ b/tools/libxc/include/xenguest.h
@@ -101,6 +101,16 @@ int xc_domain_save(xc_interface *xch, int io_fd, uint32_t dom, uint32_t max_iter
 
 /* callbacks provided by xc_domain_restore */
 struct restore_callbacks {
+    /* Called after a new checkpoint to suspend the guest.
+     */
+    int (*suspend)(void* data);
+
+    /* Called after the secondary vm is ready to resume.
+     * Callback function resumes the guest & the device model,
+     * returns to xc_domain_restore.
+     */
+    int (*postcopy)(void* data);
+
     /* A checkpoint record has been found in the stream.
      * returns: */
 #define XGR_CHECKPOINT_ERROR    0 /* Terminate processing */
diff --git a/tools/libxl/libxl_save_msgs_gen.pl b/tools/libxl/libxl_save_msgs_gen.pl
index 51d004d..6016706 100755
--- a/tools/libxl/libxl_save_msgs_gen.pl
+++ b/tools/libxl/libxl_save_msgs_gen.pl
@@ -23,8 +23,8 @@ our @msgs = (
                                                  STRING doing_what),
                                                 'unsigned long', 'done',
                                                 'unsigned long', 'total'] ],
-    [  3, 'scxA',   "suspend", [] ],
-    [  4, 'scxA',   "postcopy", [] ],
+    [  3, 'srcxA',  "suspend", [] ],
+    [  4, 'srcxA',  "postcopy", [] ],
     [  5, 'srcxA',  "checkpoint", [] ],
     [  6, 'srcxA',  "wait_checkpoint", [] ],
     [  7, 'scxA',   "switch_qemu_logdirty",  [qw(int domid
-- 
2.5.0
