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| author | Denis V. Lunev <den@openvz.org> | 2016-02-13 16:26:26 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2016-02-16 09:27:59 +0100 |
| commit | 7ec13c798a5792c70edbc088ac6aae07c85ee230 (patch) | |
| tree | ee5a164db4efb223c698459a9f463f6e8ea57ad8 | |
| parent | b11d029b0a093e31ae13e4fade03c7848e8af169 (diff) | |
| download | focaccia-qemu-7ec13c798a5792c70edbc088ac6aae07c85ee230.tar.gz focaccia-qemu-7ec13c798a5792c70edbc088ac6aae07c85ee230.zip | |
vl: change QEMU state machine for system reset
This patch implements proposal from Paolo to handle system reset when the guest is not running. "After a reset, main_loop_should_exit should actually transition to VM_STATE_PRELAUNCH (*not* RUN_STATE_PAUSED) for *all* states except RUN_STATE_INMIGRATE, RUN_STATE_SAVE_VM (which I think cannot happen there) and (of course) RUN_STATE_RUNNING." Signed-off-by: Denis V. Lunev <den@openvz.org> CC: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <1455369986-20353-1-git-send-email-den@openvz.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | vl.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/vl.c b/vl.c index 175ebccb81..76dfb54bcf 100644 --- a/vl.c +++ b/vl.c @@ -579,6 +579,7 @@ static const RunStateTransition runstate_transitions_def[] = { /* from -> to */ { RUN_STATE_DEBUG, RUN_STATE_RUNNING }, { RUN_STATE_DEBUG, RUN_STATE_FINISH_MIGRATE }, + { RUN_STATE_DEBUG, RUN_STATE_PRELAUNCH }, { RUN_STATE_INMIGRATE, RUN_STATE_INTERNAL_ERROR }, { RUN_STATE_INMIGRATE, RUN_STATE_IO_ERROR }, @@ -592,15 +593,19 @@ static const RunStateTransition runstate_transitions_def[] = { { RUN_STATE_INTERNAL_ERROR, RUN_STATE_PAUSED }, { RUN_STATE_INTERNAL_ERROR, RUN_STATE_FINISH_MIGRATE }, + { RUN_STATE_INTERNAL_ERROR, RUN_STATE_PRELAUNCH }, { RUN_STATE_IO_ERROR, RUN_STATE_RUNNING }, { RUN_STATE_IO_ERROR, RUN_STATE_FINISH_MIGRATE }, + { RUN_STATE_IO_ERROR, RUN_STATE_PRELAUNCH }, { RUN_STATE_PAUSED, RUN_STATE_RUNNING }, { RUN_STATE_PAUSED, RUN_STATE_FINISH_MIGRATE }, + { RUN_STATE_PAUSED, RUN_STATE_PRELAUNCH }, { RUN_STATE_POSTMIGRATE, RUN_STATE_RUNNING }, { RUN_STATE_POSTMIGRATE, RUN_STATE_FINISH_MIGRATE }, + { RUN_STATE_POSTMIGRATE, RUN_STATE_PRELAUNCH }, { RUN_STATE_PRELAUNCH, RUN_STATE_RUNNING }, { RUN_STATE_PRELAUNCH, RUN_STATE_FINISH_MIGRATE }, @@ -608,8 +613,10 @@ static const RunStateTransition runstate_transitions_def[] = { { RUN_STATE_FINISH_MIGRATE, RUN_STATE_RUNNING }, { RUN_STATE_FINISH_MIGRATE, RUN_STATE_POSTMIGRATE }, + { RUN_STATE_FINISH_MIGRATE, RUN_STATE_PRELAUNCH }, { RUN_STATE_RESTORE_VM, RUN_STATE_RUNNING }, + { RUN_STATE_RESTORE_VM, RUN_STATE_PRELAUNCH }, { RUN_STATE_RUNNING, RUN_STATE_DEBUG }, { RUN_STATE_RUNNING, RUN_STATE_INTERNAL_ERROR }, @@ -626,17 +633,21 @@ static const RunStateTransition runstate_transitions_def[] = { { RUN_STATE_SHUTDOWN, RUN_STATE_PAUSED }, { RUN_STATE_SHUTDOWN, RUN_STATE_FINISH_MIGRATE }, + { RUN_STATE_SHUTDOWN, RUN_STATE_PRELAUNCH }, { RUN_STATE_DEBUG, RUN_STATE_SUSPENDED }, { RUN_STATE_RUNNING, RUN_STATE_SUSPENDED }, { RUN_STATE_SUSPENDED, RUN_STATE_RUNNING }, { RUN_STATE_SUSPENDED, RUN_STATE_FINISH_MIGRATE }, + { RUN_STATE_SUSPENDED, RUN_STATE_PRELAUNCH }, { RUN_STATE_WATCHDOG, RUN_STATE_RUNNING }, { RUN_STATE_WATCHDOG, RUN_STATE_FINISH_MIGRATE }, + { RUN_STATE_WATCHDOG, RUN_STATE_PRELAUNCH }, { RUN_STATE_GUEST_PANICKED, RUN_STATE_RUNNING }, { RUN_STATE_GUEST_PANICKED, RUN_STATE_FINISH_MIGRATE }, + { RUN_STATE_GUEST_PANICKED, RUN_STATE_PRELAUNCH }, { RUN_STATE__MAX, RUN_STATE__MAX }, }; @@ -1881,8 +1892,9 @@ static bool main_loop_should_exit(void) cpu_synchronize_all_states(); qemu_system_reset(VMRESET_REPORT); resume_all_vcpus(); - if (runstate_needs_reset()) { - runstate_set(RUN_STATE_PAUSED); + if (!runstate_check(RUN_STATE_RUNNING) && + !runstate_check(RUN_STATE_INMIGRATE)) { + runstate_set(RUN_STATE_PRELAUNCH); } } if (qemu_wakeup_requested()) { |