diff options
Diffstat (limited to 'softmmu/dirtylimit.c')
| -rw-r--r-- | softmmu/dirtylimit.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/softmmu/dirtylimit.c b/softmmu/dirtylimit.c index 942d876523..a6d854d161 100644 --- a/softmmu/dirtylimit.c +++ b/softmmu/dirtylimit.c @@ -436,6 +436,23 @@ static void dirtylimit_cleanup(void) dirtylimit_state_finalize(); } +/* + * dirty page rate limit is not allowed to set if migration + * is running with dirty-limit capability enabled. + */ +static bool dirtylimit_is_allowed(void) +{ + MigrationState *ms = migrate_get_current(); + + if (migration_is_running(ms->state) && + (!qemu_thread_is_self(&ms->thread)) && + migrate_dirty_limit() && + dirtylimit_in_service()) { + return false; + } + return true; +} + void qmp_cancel_vcpu_dirty_limit(bool has_cpu_index, int64_t cpu_index, Error **errp) @@ -449,6 +466,12 @@ void qmp_cancel_vcpu_dirty_limit(bool has_cpu_index, return; } + if (!dirtylimit_is_allowed()) { + error_setg(errp, "can't cancel dirty page rate limit while" + " migration is running"); + return; + } + if (!dirtylimit_in_service()) { return; } @@ -499,6 +522,12 @@ void qmp_set_vcpu_dirty_limit(bool has_cpu_index, return; } + if (!dirtylimit_is_allowed()) { + error_setg(errp, "can't set dirty page rate limit while" + " migration is running"); + return; + } + if (!dirty_rate) { qmp_cancel_vcpu_dirty_limit(has_cpu_index, cpu_index, errp); return; |