qemu-kvm/SOURCES/kvm-migration-Move-migrate_colo_enabled-to-options.c.patch

From 13da9060fa2dfc666cd6f4b9bc85b7cee0fef45e Mon Sep 17 00:00:00 2001
From: Juan Quintela <quintela@redhat.com>
Date: Wed, 1 Mar 2023 22:00:16 +0100
Subject: [PATCH 24/56] migration: Move migrate_colo_enabled() to options.c
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RH-Author: Peter Xu <peterx@redhat.com>
RH-MergeRequest: 162: migration: Pretty failures for postcopy on unsupported memory types
RH-Bugzilla: 2057267
RH-Acked-by: Leonardo Brás <leobras@redhat.com>
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
RH-Acked-by: quintela1 <quintela@redhat.com>
RH-Commit: [23/50] 4809b1091edee38bd222af41b6313133705785c7 (peterx/qemu-kvm)

Once that we are there, we rename the function to migrate_colo() to be
consistent with all other capabilities.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
(cherry picked from commit 5e8046445575dc5879e63c5d07af893d174813d0)
Signed-off-by: Peter Xu <peterx@redhat.com>
---
 migration/migration.c | 16 +++++-----------
 migration/migration.h |  1 -
 migration/options.c   |  6 ++++++
 migration/options.h   |  1 +
 4 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/migration/migration.c b/migration/migration.c
index 66ea55be06..59ee0ef82b 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -2411,7 +2411,7 @@ static bool migrate_prepare(MigrationState *s, bool blk, bool blk_inc,
     }
 
     if (blk || blk_inc) {
-        if (migrate_colo_enabled()) {
+        if (migrate_colo()) {
             error_setg(errp, "No disk migration is required in COLO mode");
             return false;
         }
@@ -3304,7 +3304,7 @@ static void migration_completion(MigrationState *s)
                  * have done so in order to remember to reactivate
                  * them if migration fails or is cancelled.
                  */
-                s->block_inactive = !migrate_colo_enabled();
+                s->block_inactive = !migrate_colo();
                 qemu_file_set_rate_limit(s->to_dst_file, INT64_MAX);
                 ret = qemu_savevm_state_complete_precopy(s->to_dst_file, false,
                                                          s->block_inactive);
@@ -3357,7 +3357,7 @@ static void migration_completion(MigrationState *s)
         goto fail;
     }
 
-    if (migrate_colo_enabled() && s->state == MIGRATION_STATUS_ACTIVE) {
+    if (migrate_colo() && s->state == MIGRATION_STATUS_ACTIVE) {
         /* COLO does not support postcopy */
         migrate_set_state(&s->state, MIGRATION_STATUS_ACTIVE,
                           MIGRATION_STATUS_COLO);
@@ -3435,12 +3435,6 @@ fail:
                       MIGRATION_STATUS_FAILED);
 }
 
-bool migrate_colo_enabled(void)
-{
-    MigrationState *s = migrate_get_current();
-    return s->capabilities[MIGRATION_CAPABILITY_X_COLO];
-}
-
 typedef enum MigThrError {
     /* No error detected */
     MIG_THR_ERR_NONE = 0,
@@ -3771,7 +3765,7 @@ static void migration_iteration_finish(MigrationState *s)
         runstate_set(RUN_STATE_POSTMIGRATE);
         break;
     case MIGRATION_STATUS_COLO:
-        if (!migrate_colo_enabled()) {
+        if (!migrate_colo()) {
             error_report("%s: critical error: calling COLO code without "
                          "COLO enabled", __func__);
         }
@@ -3967,7 +3961,7 @@ static void *migration_thread(void *opaque)
         qemu_savevm_send_postcopy_advise(s->to_dst_file);
     }
 
-    if (migrate_colo_enabled()) {
+    if (migrate_colo()) {
         /* Notify migration destination that we enable COLO */
         qemu_savevm_send_colo_enable(s->to_dst_file);
     }
diff --git a/migration/migration.h b/migration/migration.h
index a25fed6ef0..42f0c68b6f 100644
--- a/migration/migration.h
+++ b/migration/migration.h
@@ -463,7 +463,6 @@ bool migrate_use_zero_copy_send(void);
 int migrate_use_tls(void);
 int migrate_use_xbzrle(void);
 uint64_t migrate_xbzrle_cache_size(void);
-bool migrate_colo_enabled(void);
 
 bool migrate_use_block(void);
 bool migrate_use_block_incremental(void);
diff --git a/migration/options.c b/migration/options.c
index 88a9a45913..bd33c5da0a 100644
--- a/migration/options.c
+++ b/migration/options.c
@@ -33,6 +33,12 @@ bool migrate_background_snapshot(void)
     return s->capabilities[MIGRATION_CAPABILITY_BACKGROUND_SNAPSHOT];
 }
 
+bool migrate_colo(void)
+{
+    MigrationState *s = migrate_get_current();
+    return s->capabilities[MIGRATION_CAPABILITY_X_COLO];
+}
+
 bool migrate_dirty_bitmaps(void)
 {
     MigrationState *s;
diff --git a/migration/options.h b/migration/options.h
index 0dfa0af245..2a0ee61ff8 100644
--- a/migration/options.h
+++ b/migration/options.h
@@ -18,6 +18,7 @@
 
 bool migrate_auto_converge(void);
 bool migrate_background_snapshot(void);
+bool migrate_colo(void);
 bool migrate_dirty_bitmaps(void);
 bool migrate_ignore_shared(void);
 bool migrate_late_block_activate(void);
-- 
2.39.1