[PATCH v5 3/4] drm/xe: Use device wedged event

[Ghimiray, Himal Prasad]

On 17-09-2024 12:08, Raag Jadav wrote:
> On Tue, Sep 17, 2024 at 10:11:05AM +0530, Ghimiray, Himal Prasad wrote:
>> On 17-09-2024 09:32, Raag Jadav wrote:
>>> This was previously attempted as xe specific reset uevent but dropped
>>> in commit 77a0d4d1cea2 ("drm/xe/uapi: Remove reset uevent for now")
>>> as part of refactoring.
>>>
>>> Now that we have device wedged event supported by DRM core, make use
>>> of it. With this in place userspace will be notified of wedged device,
>>> on the basis of which, userspace may take respective action to recover
>>> the device.
>>
>>
>> As per earlier discussions, the UAPI was also supposed to provide the reason
>> for wedging( which is supposedly used by L0). IS that requirement nomore in
>> place ?
> 
> Wondering how does that contribute to the usecase?


ZES_EVENT_TYPE_FLAG_DEVICE_RESET_REQUIRED uses zesDeviceGetState

"Get information about the state of the device - if a reset is required, 
reasons for the reset and if the device has been repaired. "

https://spec.oneapi.io/level-zero/latest/sysman/api.html#zes__api_8h_1aec73230b938f08ad632d0b7817b66183

> 
> Raag