Code Review Request for AMDGPU Hotplug Support

[Andrey Grodzovsky]

Looks like you are using 5.13 kernel for this work, FYI we added
hot plug support for the graphic stack in 5.14 kernel (see 
https://www.phoronix.com/scan.php?page=news_item&px=Linux-5.14-AMDGPU-Hot-Unplug) 


I am not sure about the code part since it all touches KFD driver (KFD 
team can comment on that) - but I was just wondering if you try 5.14 
kernel would things just work for you out of the box ?

Andrey

On 2022-04-05 22:45, Shuotao Xu wrote:
> Dear AMD Colleagues,
> 
> We are from Microsoft Research, and are working on GPU disaggregation 
> technology.
> 
> We have created a new pull requestAdd PCIe hotplug support for amdgpu by 
> xushuotao · Pull Request #131 · RadeonOpenCompute/ROCK-Kernel-Driver 
> (github.com) 
> <https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2FRadeonOpenCompute%2FROCK-Kernel-Driver%2Fpull%2F131&data=04%7C01%7Candrey.grodzovsky%40amd.com%7C4e8dc7d4feb84b19edf208da17a54fac%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637848296133682200%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=GE4XHNeLaWfbuoJbM4a1ecH8KKJbKbd2mRCnFinn7eI%3D&reserved=0>in 
> ROCK-Kernel-Driver, which will enable PCIe hot-plug support for amdgpu.
> 
> We believe the support of hot-plug of GPU devices can open doors for 
> many advanced applications in data center in the next few years, and we 
> would like to have some reviewers on this PR so we can continue further 
> technical discussions around this feature.
> 
> Would you please help review this PR?
> 
> Thank you very much!
> 
> Best regards,
> 
> Shuotao Xu
>