qemu-kvm/kvm-migration-Create-migration_is_running.patch

From c9e3d13d70a24bf606ce351886b27bdca25ef4dc Mon Sep 17 00:00:00 2001
From: Juan Quintela <quintela@redhat.com>
Date: Tue, 3 Mar 2020 14:51:41 +0000
Subject: [PATCH 09/18] migration: Create migration_is_running()

RH-Author: Juan Quintela <quintela@redhat.com>
Message-id: <20200303145143.149290-9-quintela@redhat.com>
Patchwork-id: 94115
O-Subject: [RHEL-AV-8.2.0 qemu-kvm PATCH v2 08/10] migration: Create migration_is_running()
Bugzilla: 1738451
RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
RH-Acked-by: Peter Xu <peterx@redhat.com>
RH-Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

This function returns true if we are in the middle of a migration.
It is like migration_is_setup_or_active() with CANCELLING and COLO.
Adapt all callers that are needed.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
(cherry picked from commit 392d87e21325fdb01210176faa07472b4985ccf0)
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
 migration/migration.c | 29 ++++++++++++++++++++++++-----
 migration/migration.h |  1 +
 migration/savevm.c    |  4 +---
 3 files changed, 26 insertions(+), 8 deletions(-)

diff --git a/migration/migration.c b/migration/migration.c
index 30c53c6..eb50d77 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -831,6 +831,27 @@ bool migration_is_setup_or_active(int state)
     }
 }
 
+bool migration_is_running(int state)
+{
+    switch (state) {
+    case MIGRATION_STATUS_ACTIVE:
+    case MIGRATION_STATUS_POSTCOPY_ACTIVE:
+    case MIGRATION_STATUS_POSTCOPY_PAUSED:
+    case MIGRATION_STATUS_POSTCOPY_RECOVER:
+    case MIGRATION_STATUS_SETUP:
+    case MIGRATION_STATUS_PRE_SWITCHOVER:
+    case MIGRATION_STATUS_DEVICE:
+    case MIGRATION_STATUS_WAIT_UNPLUG:
+    case MIGRATION_STATUS_CANCELLING:
+    case MIGRATION_STATUS_COLO:
+        return true;
+
+    default:
+        return false;
+
+    }
+}
+
 static void populate_time_info(MigrationInfo *info, MigrationState *s)
 {
     info->has_status = true;
@@ -1090,7 +1111,7 @@ void qmp_migrate_set_capabilities(MigrationCapabilityStatusList *params,
     MigrationCapabilityStatusList *cap;
     bool cap_list[MIGRATION_CAPABILITY__MAX];
 
-    if (migration_is_setup_or_active(s->state)) {
+    if (migration_is_running(s->state)) {
         error_setg(errp, QERR_MIGRATION_ACTIVE);
         return;
     }
@@ -1603,7 +1624,7 @@ static void migrate_fd_cancel(MigrationState *s)
 
     do {
         old_state = s->state;
-        if (!migration_is_setup_or_active(old_state)) {
+        if (!migration_is_running(old_state)) {
             break;
         }
         /* If the migration is paused, kick it out of the pause */
@@ -1900,9 +1921,7 @@ static bool migrate_prepare(MigrationState *s, bool blk, bool blk_inc,
         return true;
     }
 
-    if (migration_is_setup_or_active(s->state) ||
-        s->state == MIGRATION_STATUS_CANCELLING ||
-        s->state == MIGRATION_STATUS_COLO) {
+    if (migration_is_running(s->state)) {
         error_setg(errp, QERR_MIGRATION_ACTIVE);
         return false;
     }
diff --git a/migration/migration.h b/migration/migration.h
index 0b1b0d4..a2b2336 100644
--- a/migration/migration.h
+++ b/migration/migration.h
@@ -279,6 +279,7 @@ void migrate_fd_error(MigrationState *s, const Error *error);
 void migrate_fd_connect(MigrationState *s, Error *error_in);
 
 bool migration_is_setup_or_active(int state);
+bool migration_is_running(int state);
 
 void migrate_init(MigrationState *s);
 bool migration_is_blocked(Error **errp);
diff --git a/migration/savevm.c b/migration/savevm.c
index a80bb52..144ecf0 100644
--- a/migration/savevm.c
+++ b/migration/savevm.c
@@ -1506,9 +1506,7 @@ static int qemu_savevm_state(QEMUFile *f, Error **errp)
     MigrationState *ms = migrate_get_current();
     MigrationStatus status;
 
-    if (migration_is_setup_or_active(ms->state) ||
-        ms->state == MIGRATION_STATUS_CANCELLING ||
-        ms->state == MIGRATION_STATUS_COLO) {
+    if (migration_is_running(ms->state)) {
         error_setg(errp, QERR_MIGRATION_ACTIVE);
         return -EINVAL;
     }
-- 
1.8.3.1