Re: [PATCH V2 1/4] softmmu/runstate.c: add RunStateTransition support form COLO to PRELAUNCH

["Dr. David Alan Gilbert" <dgilbert@redhat.com>]

* Jason Wang (jasowang@redhat.com) wrote:
> On Sat, May 7, 2022 at 10:03 AM Zhang, Chen <chen.zhang@intel.com> wrote:
> >
> >
> >
> > > -----Original Message-----
> > > From: Zhang, Chen
> > > Sent: Wednesday, April 27, 2022 5:26 PM
> > > To: Jason Wang <jasowang@redhat.com>; Paolo Bonzini
> > > <pbonzini@redhat.com>
> > > Cc: Li Zhijian <lizhijian@cn.fujitsu.com>; qemu-dev <qemu-
> > > devel@nongnu.org>; Like Xu <like.xu@linux.intel.com>
> > > Subject: RE: [PATCH V2 1/4] softmmu/runstate.c: add RunStateTransition
> > > support form COLO to PRELAUNCH
> > >
> > >
> > >
> > > > -----Original Message-----
> > > > From: Jason Wang <jasowang@redhat.com>
> > > > Sent: Wednesday, April 27, 2022 4:57 PM
> > > > To: Zhang, Chen <chen.zhang@intel.com>
> > > > Cc: Li Zhijian <lizhijian@cn.fujitsu.com>; qemu-dev <qemu-
> > > > devel@nongnu.org>; Like Xu <like.xu@linux.intel.com>
> > > > Subject: Re: [PATCH V2 1/4] softmmu/runstate.c: add RunStateTransition
> > > > support form COLO to PRELAUNCH
> > > >
> > > > On Fri, Apr 1, 2022 at 11:59 AM Zhang Chen <chen.zhang@intel.com> wrote:
> > > > >
> > > > > If the checkpoint occurs when the guest finishes restarting but has
> > > > > not started running, the runstate_set() may reject the transition
> > > > > from COLO to PRELAUNCH with the crash log:
> > > > >
> > > > > {"timestamp": {"seconds": 1593484591, "microseconds": 26605},\
> > > > > "event": "RESET", "data": {"guest": true, "reason": "guest-reset"}}
> > > > > qemu-system-x86_64: invalid runstate transition: 'colo' -> 'prelaunch'
> > > > >
> > > > > Long-term testing says that it's pretty safe.
> > > > >
> > > > > Signed-off-by: Like Xu <like.xu@linux.intel.com>
> > > > > Signed-off-by: Zhang Chen <chen.zhang@intel.com>
> > > >
> > > > I'd expect this to get ack from the relevant maintainers.
> > > >
> > >
> > > The scripts/get_maintainer.pl can't find relevant maintainers for this patch.
> > > Maybe Paolo have time to cover this simple patch related to runstate?
> >
> > No news for a while, any comments for unmaintained files changes ?
> > Ping...
> 
> Adding David and Juan.

This looks OK to me;

Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

it should be fine to merge it along with the pull that takes the other
patches.

Dave

> Thanks
> 
> >
> > Thanks
> > Chen
> >
> > >
> > > Thanks
> > > Chen
> > >
> > > > Thanks
> > > >
> > > > > ---
> > > > >  softmmu/runstate.c | 1 +
> > > > >  1 file changed, 1 insertion(+)
> > > > >
> > > > > diff --git a/softmmu/runstate.c b/softmmu/runstate.c index
> > > > > e0d869b21a..c021c56338 100644
> > > > > --- a/softmmu/runstate.c
> > > > > +++ b/softmmu/runstate.c
> > > > > @@ -127,6 +127,7 @@ static const RunStateTransition
> > > > runstate_transitions_def[] = {
> > > > >      { RUN_STATE_RESTORE_VM, RUN_STATE_PRELAUNCH },
> > > > >
> > > > >      { RUN_STATE_COLO, RUN_STATE_RUNNING },
> > > > > +    { RUN_STATE_COLO, RUN_STATE_PRELAUNCH },
> > > > >      { RUN_STATE_COLO, RUN_STATE_SHUTDOWN},
> > > > >
> > > > >      { RUN_STATE_RUNNING, RUN_STATE_DEBUG },
> > > > > --
> > > > > 2.25.1
> > > > >
> >
> 
-- 
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK