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From: Gerd Hoffmann <kraxel@redhat.com>
Date: Tue, 10 Jun 2014 09:44:33 +0200
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Subject: Re: [Qemu-devel] [PATCH 2/3] console: rework text terminal cursor
 logic
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To: Ian Campbell <ijc@hellion.org.uk>
Cc: qemu-devel@nongnu.org, Anthony Liguori <aliguori@amazon.com>

On So, 2014-06-08 at 11:30 +0100, Ian Campbell wrote:
> On Thu, 2014-05-22 at 13:00 +0200, Gerd Hoffmann wrote:
> > Have a global timer.  Update all visible terminal windows syncronously.
> > Right now this can be the active_console only, but that will change
> > soon.  The global timer will disable itself if not needed, so we only
> > have to care start it if needed.  Which might be at console switch time
> > or when a new displaychangelistener is registered.
> 
> Running current master (d7d3d6092cb7) I'm seeing a segmentation fault
> while running:
>         ./aarch64-softmmu/qemu-system-aarch64 -M virt -cpu cortex-a57
>         -sdl
> which goes away if I revert this patch. qemu is configured with
>         ./configure --target-list=aarch64-softmmu  --enable-sdl
> 
> The backtrace shows that the timer is NULL.

http://lists.gnu.org/archive/html/qemu-devel/2014-06/msg00106.html

High time to get the pull request out of the door ...

cheers,
  Gerd