[Bug 201957] amdgpu: ring gfx timeout

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=201957

--- Comment #41 from Panagiotis Polychronis (panospolychronis at gmail.com) ---
(In reply to j.cordoba from comment #40)
> (In reply to Randune from comment #39)
> > There doesn't appear to be any progress on this bug, does anyone have any
> > suggestions with regards on how to fix this issue?
> 
> Try to add iommu=pt as parameter

I'm running Linux Kernel 5.10.9 with those kernel parameters 
"amdgpu.ppfeaturemask=0xffffbffb amdgpu.noretry=0 amdgpu.lockup_timeout=0
amdgpu.gpu_recovery=1 amdgpu.audio=0 amdgpu.deep_color=1 amd_iommu=on iommu=pt"
My graphics card is Radeon 5600XT and i can confirm that this issue still exist
:)
Meanwhile i looked at
https://lists.freedesktop.org/archives/amd-gfx/2021-January/date.html and there
are some patches about ring timeout which i think they aren't yet merged for
the next Linux Kernel release. Probably Alex Deucher will merge them later.

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