Re: [PATCH 1/2] drm: introduce page_flip_timeout()

["Michel Dänzer" <michel.daenzer@mailbox.org>]

On 1/28/26 12:25, Christian König wrote:
> On 1/28/26 10:19, Timur Kristóf wrote:
>> On 2026. január 26., hétfő 14:00:59 közép-európai téli idő Christian König 
>> wrote:
>>> On 1/26/26 11:27, Michel Dänzer wrote:
>>>> On 1/26/26 11:14, Christian König wrote:
>>>>>
>>>>> But looking at the slide Harry actually pointed out what immediately came
>>>>> to my mind as well, e.g. that the Compositor needs to issue a full
>>>>> modeset to re-program the CRTC.> 
>>>> In principle, the kernel driver has all the information it needs to
>>>> reprogram the HW by itself. Not sure why the compositor would need to be
>>>> actively involved.
>>>
>>> [...]
>>>
>>> Then second even if the kernel can do it I'm not sure if it should do it.
>>>
>>> [...]
>>
>> I agree with Michel here. It's a kernel bug, it should be solved by the 
>> kernel. I don't like the tendency of pushing userspace to handle kernel bugs, 
>> especially if this is just needed for one vendor's buggy driver. (No offence.)
> 
> Well I strongly disagree. The kernel is not here to serve userspace, [...]

Can't say I agree with that statement.

Anyway, user space certainly isn't here to kick the kernel back into gear after it hit a bug, or to tell it things it already knows.


-- 
Earthling Michel Dänzer       \        GNOME / Xwayland / Mesa developer
https://redhat.com             \               Libre software enthusiast