From 16c188d246f8d74f3d25098effdb836cdeb17e16 Mon Sep 17 00:00:00 2001
From: jipengfei <jipengfei_yewu@cmss.chinamobile.com>
Date: Sat, 1 Jul 2023 13:08:53 +0800
Subject: [PATCH] migration: report compress thread pid to libvirt

Supports migrating compressed threads bound to physical cores,qemu need to tell libvirt the compress thread pids.

Signed-off-by:jipengfei <jipengfei_yewu@cmss.chinamobile.com>
---
 migration/ram.c     |  3 +++
 qapi/migration.json | 13 +++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/migration/ram.c b/migration/ram.c
index c3484ee1a9..c6c59b54d9 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -755,6 +755,9 @@ static void *do_data_compress(void *opaque)
     RAMBlock *block;
     bool zero_page;
 
+    /* report compress thread pids to libvirt */
+    qapi_event_send_migration_compress_pid(qemu_get_thread_id());
+
     qemu_mutex_lock(&param->mutex);
     while (!param->quit) {
         if (param->block) {
diff --git a/qapi/migration.json b/qapi/migration.json
index 8e18fd30e4..e965f4329b 100644
--- a/qapi/migration.json
+++ b/qapi/migration.json
@@ -1308,6 +1308,19 @@
 { 'event': 'MIGRATION_PID',
   'data': { 'pid': 'int' } }
 
+##
+# @MIGRATION_COMPRESS_PID:
+#
+# Emitted when compress thread appear
+#
+# @pid: pid of compress thread
+#
+# Since: 6.2
+##
+{ 'event': 'MIGRATION_COMPRESS_PID',
+  'data': { 'pid': 'int' } }
+
+
 ##
 # @COLOMessage:
 #
-- 
2.41.0.windows.1