How to gracefully handle pci remove

[Andrey Grodzovsky]

Hi everybody , I am trying to resolve various problems I observe when 
logically removing AMDGPU device from pci - echo 1 > 
/sys/class/drm/card0/device/remove

One of the problems I encountered was hitting WARNs  in 
amdgpu_gem_force_release. It complaints  about still open client FDs and 
BOs allocations which is obvious since

we didn't let user space clients know about the device removal and hence 
they won't release allocations and won't close their FDs.

Question - how other drivers handle this use case, especially eGPUs 
since they indeed may be extracted in any moment, is there any way to 
notify Xorg and other clients about this so they may

have a chance to release all their allocations and probably terminate ? 
Maybe some kind of uevent ?

Andrey