linux-kernel - Thunderbolt DMAR errors (bugzilla 214259)

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Date:   Mon, 7 Nov 2022 12:06:13 -0600
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Andreas Noever <andreas.noever@...il.com>,
        Michael Jamet <michael.jamet@...el.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Yehezkel Bernat <YehezkelShB@...il.com>
Cc:     wse@...edocomputers.com, Konrad J Hambrick <kjhambrick@...il.com>,
        linux-usb@...r.kernel.org, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Thunderbolt DMAR errors (bugzilla 214259)

See https://bugzilla.kernel.org/show_bug.cgi?id=214259
>From comment 42 of this bugzilla:

v6.1-rc4 on On Clevo X170KM Barebone:

  [    0.000000] BIOS-e820: [mem 0x00000000694af000-0x000000006b2fefff] reserved
  [    0.739226] pci 0000:05:00.0: [8086:1137] type 00 class 0x0c0340
  [    0.739266] pci 0000:05:00.0: reg 0x10: [mem 0x425a000000-0x425a03ffff 64bit pref]
  [    0.739288] pci 0000:05:00.0: reg 0x18: [mem 0x425a040000-0x425a040fff 64bit pref]
  [    1.587809] DMAR: [DMA Write NO_PASID] Request device [05:00.0] fault addr 0x69974000 [fault reason 0x05] PTE Write access is not set
  [   23.594763] DMAR: [DMA Write NO_PASID] Request device [05:00.0] fault addr 0x69974000 [fault reason 0x05] PTE Write access is not set
  [   44.074761] DMAR: [DMA Write NO_PASID] Request device [05:00.0] fault addr 0x69974000 [fault reason 0x05] PTE Write access is not set
  [   64.554820] DMAR: [DMA Write NO_PASID] Request device [05:00.0] fault addr 0x69974000 [fault reason 0x05] PTE Write access is not set
  [   85.031314] thunderbolt 0000:05:00.0: failed to send driver ready to ICM
  [   85.031403] thunderbolt: probe of 0000:05:00.0 failed with error -110

The initial report from wse@ was on v5.15 (faults at the exact same
address).