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SubjectRe: [git pull] drm for 6.10-rc1
On Wed, 15 May 2024 at 13:06, Linus Torvalds
<torvalds@linux-foundation.org> wrote:
>
> Hmm. There's something seriously wrong with amdgpu.
>
> I'm getting a ton of__force_merge warnings:
>
> WARNING: CPU: 0 PID: 1069 at drivers/gpu/drm/drm_buddy.c:199
> __force_merge+0x14f/0x180 [drm_buddy]

Adding likely culprits to the participants, since it looks like this
is all new with commit 96950929eb23 ("drm/buddy: Implement tracking
clear page feature").

Sadly I can't juist revert that commit to check, because there are
many subsequent commits that then depend on it.

I guess I'll try to revert the later commit that enables it for amdgpu
(commit a68c7eaa7a8f) and see if it at least makes the horrendous
messages go away.

Anyway, this is some old Radeon graphics card in my Threadripper:

49:00.0 VGA compatible controller: Advanced Micro Devices, Inc.
[AMD/ATI] Ellesmere [Radeon RX 470/480/570/570X/580/580X/590] (rev e7)
(prog-if 00 [VGA controller])
Subsystem: Sapphire Technology Limited Radeon RX 570 Pulse 4GB
Flags: bus master, fast devsel, latency 0, IRQ 130, IOMMU group 32
Memory at c0000000 (64-bit, prefetchable) [size=256M]
Memory at d0000000 (64-bit, prefetchable) [size=2M]
I/O ports at 8000 [size=256]
Memory at d1c00000 (32-bit, non-prefetchable) [size=256K]
Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: amdgpu
Kernel modules: amdgpu

I think it's a "Sapphire Radeon Pulse RX 580" or something like that.

Linus

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