linux-kernel - Linux 6.1-rc1 drm/amdgpu regression

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Message-ID: <efe5a0a4-775e-bc6b-27c2-aa506f5613fa@linuxfoundation.org>
Date:   Wed, 19 Oct 2022 14:00:13 -0600
From:   Shuah Khan <skhan@...uxfoundation.org>
To:     Alexander Deucher <Alexander.Deucher@....com>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Shuah Khan <skhan@...uxfoundation.org>,
        linux-kernel@...r.kernel.org
Subject: Linux 6.1-rc1 drm/amdgpu regression

Hi Alex,

I am seeing the same problem I sent reverts for on 5.10.147 on
Linux 6.1-rc1 on my laptop with AMD Ryzen 7 PRO 5850U with Radeon
Graphics.

commit e3163bc8ffdfdb405e10530b140135b2ee487f89
Author: Alex Deucher <alexander.deucher@....com>
Date:   Fri Sep 9 11:53:27 2022 -0400

     drm/amdgpu: move nbio sdma_doorbell_range() into sdma code for vega

I see that the following has been reverted in Linux 6.1-rc1

commit 66f99628eb24409cb8feb5061f78283c8b65f820
Author: Hamza Mahfooz <hamza.mahfooz@....com>
Date:   Tue Sep 6 15:01:49 2022 -0400

     drm/amdgpu: use dirty framebuffer helper

However I still see the following filling dmesg and system is unusable.
For now I switched back to Linux 6.0 as this is my primary system.

[drm] Fence fallback timer expired on ring sdma0
[drm] Fence fallback timer expired on ring gfx
[drm] Fence fallback timer expired on ring sdma0
[drm] Fence fallback timer expired on ring gfx
[drm] Fence fallback timer expired on ring sdma0
[drm] Fence fallback timer expired on ring sdma0
[drm] Fence fallback timer expired on ring sdma0
[drm] Fence fallback timer expired on ring gfx

Please let me know if I should send revert for this for the mainline
as well.

thanks,
-- Shuah