[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 #9 from Paul Menzel (pmenzel+bugzilla.kernel.org@xxxxxxxxxxxxx) ---
Created attachment 295423
  --> https://bugzilla.kernel.org/attachment.cgi?id=295423&action=edit
Linux 5.12+ messages

Some days ago, Linus added the commit to this main branch [1].

Unfortunately, I am still seeing this error.

    [    0.000000] Linux version 5.11.0-10281-g19b4f3edd5c9 (root@a2ab663d937e)
(gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian)
2.35.1) #138 SMP Wed Feb 24 11:28:17 UTC 2021
    […]
    [    0.106422] smpboot: CPU0: AMD Ryzen 3 2200G with Radeon Vega Graphics
(family: 0x17, model: 0x11, stepping: 0x0)
    […]
    [    0.291257] pci 0000:00:00.2: AMD-Vi: Unable to read/write to IOMMU perf
counter.
    […]

@00oo00, is the error gone for you now (AMD Ryzen 5 2400G with Radeon Vega
Graphics (family: 0x17, model: 0x11, stepping: 0x0))?


[1]:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6778ff5b21bd8e78c8bd547fd66437cf2657fd9b

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