Linux 5.6 Flipping On GPU Reset Support For AMD Renoir + Radeon Navi

[phoronix]

Phoronix: Linux 5.6 Flipping On GPU Reset Support For AMD Renoir + Radeon Navi

Last week the main set of kernel graphics driver improvements were merged while today is an interesting secondary batch of changes for the in-development Linux 5.6 kernel...

http://www.phoronix.com/scan.php?page=news_item&px=Linux-5.6-Navi-GPU-Reset

[DMJC]

Can a dev clarify? Does this mean that Navi cards can now be hotswap removed? or will it take down the console if I try to unplug my thunderbolt connected GPU?

[Snaipersky]

As far as I can tell, this is a party of gnifs work on pcie FLR (function level reset) allowing re-initialization of the gpu after boot. The main targeted use is recovering the GPU after a driver or VM crash.

[dwagner]

A GPU with a reasonably stable driver would not require any such feature (which isn't really going to save the OS from crashing when the GPU driver crashes, anyway).

[RussianNeuroMancer]

Can a dev clarify? Does this mean that Navi cards can now be hotswap removed? or will it take down the console if I try to unplug my thunderbolt connected GPU?

Yeah, what about detaching eGPUs? Is AMD going to implement this?

[castlefox]

It is surprising to see GPU reset support is finally happening for Navi. I would have thought that was already implemented.

[agd5f]

It is surprising to see GPU reset support is finally happening for Navi. I would have thought that was already implemented.

It was already implemented (the driver uses reset for a variety of things internally), it was just not enabled by default for GPU hangs until now.

[castlefox]

It was already implemented (the driver uses reset for a variety of things internally), it was just not enabled by default for GPU hangs until now.

It was implemented for the official driver and/or the open source driver?

[agd5f]

It was implemented for the official driver and/or the open source driver?

Same driver.