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

[Yonit Halperin]

On 07/12/2010 12:43 PM, Gerd Hoffmann wrote:
> 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
>
I wanted to avoid moving to VGA mode and initializing unnecessary data. 
But I'll send another version that uses QXL_IO_RESET.
Yonit.