Re: Linux 5.17.5

["Jörg-Volker Peetz" <jvpeetz@web.de>]

Hi,

no, right at the first cold boot with the patched kernel the warning appeared:

May  2 21:50:27 xxx kernel: WARNING: CPU: 0 PID: 1 at
drivers/iommu/amd/init.c:851 amd_iommu_enable_interrupts+0x312/0x3f0
May  2 21:50:27 xxx kernel: Modules linked in:
May  2 21:50:27 xxx kernel: CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.17.5 #2
May  2 21:50:27 xxx kernel: Hardware name: Micro-Star International Co., Ltd.
MS-7C94/MAG B550M MORTAR (MS-7C94), BIOS 1.94 09/23/2021
May  2 21:50:27 xxx kernel: RIP: 0010:amd_iommu_enable_interrupts+0x312/0x3f0
May  2 21:50:27 xxx kernel: Code: ff ff 49 8b 7f 18 89 04 24 e8 2a ff f6 ff 8b
04 24 e9 7b fd ff ff 0f 0b 4d 8b 3f 49 81 ff 90 15 4c 9f 0f 85 35 fd ff ff eb 82
<0f> 0b 4d 8b 3f 49 81 ff 90 15 4c 9f 0f 85 21 fd ff ff e9 6b ff ff
May  2 21:50:27 xxx kernel: RSP: 0018:ffffb9ad4005fdd8 EFLAGS: 00010246
May  2 21:50:27 xxx kernel: RAX: 00000015be386e7c RBX: 0000000000000000 RCX:
0000000000000000
May  2 21:50:27 xxx kernel: RDX: 0000000000009e16 RSI: 0000000000009427 RDI:
00000015be37d066
May  2 21:50:27 xxx kernel: RBP: 0000000080000000 R08: ffffffffffffffff R09:
0000000000000000
May  2 21:50:27 xxx kernel: R10: 00000000000000d1 R11: 0000000000000000 R12:
000ffffffffffff8
May  2 21:50:27 xxx kernel: R13: 0800000000000000 R14: 0008000000000000 R15:
ffff9a4600190000
May  2 21:50:27 xxx kernel: FS:  0000000000000000(0000)
GS:ffff9a53f1e00000(0000) knlGS:0000000000000000
May  2 21:50:27 xxx kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
May  2 21:50:27 xxx kernel: CR2: ffff9a51c9c01000 CR3: 0000000cc960a000 CR4:
0000000000750ef0
May  2 21:50:27 xxx kernel: PKRU: 55555554
May  2 21:50:27 xxx kernel: Call Trace:
May  2 21:50:27 xxx kernel: <TASK>
May  2 21:50:27 xxx kernel: iommu_go_to_state+0x10e0/0x138d
May  2 21:50:27 xxx kernel: ? e820__memblock_setup+0x78/0x78
May  2 21:50:27 xxx kernel: amd_iommu_init+0xa/0x20
May  2 21:50:27 xxx kernel: pci_iommu_init+0x11/0x3a
May  2 21:50:27 xxx kernel: do_one_initcall+0x47/0x180
May  2 21:50:27 xxx kernel: kernel_init_freeable+0x162/0x1a7
May  2 21:50:27 xxx kernel: ? rest_init+0xc0/0xc0
May  2 21:50:27 xxx kernel: kernel_init+0x11/0x110
May  2 21:50:27 xxx kernel: ret_from_fork+0x22/0x30
May  2 21:50:27 xxx kernel: </TASK>

For a cold boot I switch off the computer for ca. 30 seconds and switch it on
again. I booted into a console where I looked out for warnings with `dmesg -l
warn`. Then I tried to start X with `startx` but the screen got blocked. Via ssh
I ordered `reboot`, a warm start. Then the warning didn't appear, I could start
X and work normally.

In 'kern.log' I also found this:

May  2 21:53:27 xxx kernel: [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring gfx
timeout, signaled seq=16, emitted seq=17
May  2 21:53:27 xxx kernel: [drm:amdgpu_job_timedout [amdgpu]] *ERROR* Process
information: process Xorg pid 1787 thread Xorg:cs0 pid 1788
May  2 21:53:27 xxx kernel: amdgpu 0000:30:00.0: amdgpu: GPU reset begin!
May  2 21:53:27 xxx kernel: amdgpu 0000:30:00.0: [drm:amdgpu_ring_test_helper
[amdgpu]] *ERROR* ring kiq_2.1.0 test failed (-110)
May  2 21:53:27 xxx kernel: [drm] free PSP TMR buffer
May  2 21:53:27 xxx kernel: amdgpu 0000:30:00.0: amdgpu: MODE2 reset
May  2 21:53:27 xxx kernel: amdgpu 0000:30:00.0: amdgpu: GPU reset succeeded,
trying to resume
May  2 21:53:27 xxx kernel: [drm] PCIE GART of 1024M enabled.
May  2 21:53:27 xxx kernel: [drm] PTB located at 0x000000F400900000
May  2 21:53:27 xxx kernel: [drm] PSP is resuming...
May  2 21:53:27 xxx kernel: [drm] reserve 0x400000 from 0xf4ff800000 for PSP TMR
May  2 21:53:27 xxx kernel: amdgpu 0000:30:00.0: amdgpu: RAS: optional ras ta
ucode is not available
May  2 21:53:27 xxx kernel: amdgpu 0000:30:00.0: amdgpu: RAP: optional rap ta
ucode is not available
May  2 21:53:27 xxx kernel: amdgpu 0000:30:00.0: amdgpu: SECUREDISPLAY:
securedisplay ta ucode is not available
May  2 21:53:27 xxx kernel: amdgpu 0000:30:00.0: amdgpu: SMU is resuming...
May  2 21:53:27 xxx kernel: amdgpu 0000:30:00.0: amdgpu: SMU is resumed
successfully!
May  2 21:53:27 xxx kernel: [drm] DMUB hardware initialized: version=0x0101001F
May  2 21:53:28 xxx kernel: [drm] kiq ring mec 2 pipe 1 q 0
May  2 21:53:28 xxx kernel: amdgpu 0000:30:00.0: [drm:amdgpu_ring_test_helper
[amdgpu]] *ERROR* ring kiq_2.1.0 test failed (-110)
May  2 21:53:28 xxx kernel: [drm:amdgpu_gfx_enable_kcq.cold [amdgpu]] *ERROR*
KCQ enable failed
May  2 21:53:28 xxx kernel: [drm:amdgpu_device_ip_resume_phase2 [amdgpu]]
*ERROR* resume of IP block <gfx_v9_0> failed -110
May  2 21:53:28 xxx kernel: amdgpu 0000:30:00.0: amdgpu: GPU reset(2) failed
May  2 21:53:28 xxx kernel: amdgpu 0000:30:00.0: amdgpu: GPU reset end with ret
= -110
May  2 21:53:38 xxx kernel: [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring gfx
timeout, signaled seq=17, emitted seq=17
May  2 21:53:38 xxx kernel: [drm:amdgpu_job_timedout [amdgpu]] *ERROR* Process
information: process Xorg pid 1787 thread Xorg:cs0 pid 1788
May  2 21:53:38 xxx kernel: amdgpu 0000:30:00.0: amdgpu: GPU reset begin!

Thanks for your help.
Regards,
Jörg.

JoergRoedel wrote on 02/05/2022 11:45:
> [now with Vasants correct email address]
>
> Hi Jörg,
>
> can you please try the attached patch? It should get rid of the WARNING
> on your system.
>
> Suravee, Vasant, can you please test review the patch and report whether
> the GA log functionality is still working?
>
> Thanks,
>
> 	Joerg
>
>  From 4fee768d5c23715eae31fed3b41cdf045e099aef Mon Sep 17 00:00:00 2001
> From: Joerg Roedel <jroedel@suse.de>
> Date: Mon, 2 May 2022 11:37:43 +0200
> Subject: [PATCH] iommu/amd: Do not poll GA_LOG_RUNNING mask at boot
>
> On some hardware it takes more than a second for the hardware to get
> the GA log into running state. This is too long to poll for in the AMD
> IOMMU driver code.
>
> Instead, check whehter initialization was successful before polling
> the log for the first time.
>
> Signed-off-by: Joerg Roedel <jroedel@suse.de>
> ---
>   drivers/iommu/amd/amd_iommu_types.h |  3 +++
>   drivers/iommu/amd/init.c            | 13 ++-----------
>   drivers/iommu/amd/iommu.c           | 25 ++++++++++++++++++++++++-
>   3 files changed, 29 insertions(+), 12 deletions(-)
<snip>