[Spice-devel] [PATCH 3/3] Fix corrupted ram data (e.g., release_ring), and unsynchronized worker, after driver is disabled and re-enabled.

[Gerd Hoffmann]

On 07/12/10 11:15, Yonit Halperin wrote:
> On logoff in Win7 guest, and on switch user and login into Winxp guest,
> the driver is disabled and re-enabled (while the miniport in not reset).
> However, before the fix, all the draw objects, e.g., surfaces,
> were still alive in the worker and the release ring still contained objects, while all the driver's data
> was initialized. This caused blue screens, and panics in the worker.

Hmm, I'd suggest to go straight for a plain IO_RESET in the driver 
initialization to start fresh with a known state of the qxl device. 
That should avoid all unpleasant surprises due to the qxl device not 
being in the state the driver expects.

cheers,
   Gerd