[Bug 201753] AMD-Vi: Unable to write to IOMMU perf counter

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https://bugzilla.kernel.org/show_bug.cgi?id=201753

--- Comment #37 from Neil (ledufff@xxxxxxxxxxx) ---
Whoops,  I forgot to report as well that this is fixed for me.
Thinkpad E495 / Ryzen 3500u / debian 11 linux 5.10.46-5


[    0.366749] iommu: Default domain type: Translated 
[    0.805580] pci 0000:00:01.0: Adding to iommu group 0
[    0.805589] pci 0000:00:01.1: Adding to iommu group 1
[    0.805600] pci 0000:00:01.2: Adding to iommu group 2
[    0.805608] pci 0000:00:01.3: Adding to iommu group 3
[    0.805616] pci 0000:00:01.6: Adding to iommu group 4
[    0.805635] pci 0000:00:08.0: Adding to iommu group 5
[    0.805644] pci 0000:00:08.1: Adding to iommu group 6
[    0.805651] pci 0000:00:08.2: Adding to iommu group 5
[    0.805663] pci 0000:00:14.0: Adding to iommu group 7
[    0.805670] pci 0000:00:14.3: Adding to iommu group 7
[    0.805701] pci 0000:00:18.0: Adding to iommu group 8
[    0.805709] pci 0000:00:18.1: Adding to iommu group 8
[    0.805716] pci 0000:00:18.2: Adding to iommu group 8
[    0.805723] pci 0000:00:18.3: Adding to iommu group 8
[    0.805730] pci 0000:00:18.4: Adding to iommu group 8
[    0.805736] pci 0000:00:18.5: Adding to iommu group 8
[    0.805743] pci 0000:00:18.6: Adding to iommu group 8
[    0.805749] pci 0000:00:18.7: Adding to iommu group 8
[    0.805758] pci 0000:01:00.0: Adding to iommu group 9
[    0.805767] pci 0000:02:00.0: Adding to iommu group 10
[    0.805775] pci 0000:03:00.0: Adding to iommu group 11
[    0.805783] pci 0000:04:00.0: Adding to iommu group 12
[    0.805809] pci 0000:05:00.0: Adding to iommu group 13
[    0.805835] pci 0000:05:00.1: Adding to iommu group 14
[    0.805846] pci 0000:05:00.2: Adding to iommu group 14
[    0.805857] pci 0000:05:00.3: Adding to iommu group 14
[    0.805868] pci 0000:05:00.4: Adding to iommu group 14
[    0.805879] pci 0000:05:00.5: Adding to iommu group 14
[    0.805890] pci 0000:05:00.6: Adding to iommu group 14
[    0.805895] pci 0000:06:00.0: Adding to iommu group 5
[    0.810116] perf/amd_iommu: Detected AMD IOMMU #0 (2 banks, 4
counters/bank).

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