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Re: [Qemu-devel] [PATCH] migration: Cleanup during exit


From: Juan Quintela
Subject: Re: [Qemu-devel] [PATCH] migration: Cleanup during exit
Date: Wed, 27 Feb 2019 21:32:11 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux)

"Dr. David Alan Gilbert (git)" <address@hidden> wrote:
> From: "Dr. David Alan Gilbert" <address@hidden>
>
> Currently we cleanup the migration object as we exit main after the
> main_loop finishes; however if there's a migration running things
> get messy and we can end up with the migration thread still trying
> to access freed structures.
>
> We now take a ref to the object around the migration thread itself,
> so the act of dropping the ref during exit doesn't cause us to lose
> the state until the thread quits.
>
> Cancelling the migration during migration also tries to get the thread
> to quit.
>
> We do this a bit earlier; so hopefully migration gets out of the way
> before all the devices etc are freed.
>
> Signed-off-by: Dr. David Alan Gilbert <address@hidden>
> Tested-by: Alex Bennée <address@hidden>

Reviewed-by: Juan Quintela <address@hidden>



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