Re: [PATCH AUTOSEL 6.11 72/76] drm/amdgpu: nuke the VM PD/PT shadow handling

Sasha Levin
2024-10-08T13:04:41Z

On Tue, Oct 08, 2024 at 08:46:01AM +0200, Christian König wrote:
>Hi Sasha,
>
>Am 04.10.24 um 20:17 schrieb Sasha Levin:
>>From: Christian König <christian.koenig@amd.com>
>>
>>[ Upstream commit 7181faaa4703705939580abffaf9cb5d6b50dbb7 ]
>>
>>This was only used as workaround for recovering the page tables after
>>VRAM was lost and is no longer necessary after the function
>>amdgpu_vm_bo_reset_state_machine() started to do the same.
>>
>>Compute never used shadows either, so the only proplematic case left is
>>SVM and that is most likely not recoverable in any way when VRAM is
>>lost.
>
>why is that backported to older kernels? It's basically just removing
>an old and now unused feature.
>
>Lijo pointed out a related bug fixed by removing the feature, but that
>only happens extremely rarely and in my view doesn't really justify a
>backport.

I'll drop it then, thanks!

--
Thanks,
Sasha