[PATCH v4 6/9] drm/xe/doc: Document device wedged and runtime survivability

[Riana Tauro]

On 7/11/2025 11:09 AM, Raag Jadav wrote:
> On Wed, Jul 09, 2025 at 04:50:18PM +0530, Riana Tauro wrote:
>> Add documentation for vendor specific device wedged recovery method
>> and runtime survivability.
> 
> ...
> 
>> + * Runtime Survivability
>> + * =====================
>> + *
>> + * Certain runtime firmware errors can cause the device to enter a wedged state
>> + * (:ref:`xe-device-wedging`) requiring a firmware flash to restore normal operation.
>> + * Runtime Survivability Mode indicates that a firmware flash is necessary to recover the device and
>> + * is indicated by the presence of survivability mode sysfs::
>> + *
>> + *	/sys/bus/pci/devices/<device>/survivability_mode
>> + *
>> + * Survivability mode sysfs provides information about the type of survivability mode.
>> + *
>> + * When such errors occur, userspace is notified with the drm device wedged uevent and runtime
>> + * survivability mode. User can then initiate a firmware flash to restore device to normal
>> + * operation.
> 
> Do we have definition on actual procedure? Can we add a reference to it?
> Otherwise it's telling me to do something I have no idea about.

That is a userspace tool. I don't see any kernel code refering to 
userspace documentation.

Thanks
Riana


> 
> Raag