RE: Supermicro X9SRL-F - channel enumeration error & ACPI/firmware bug question

[Justin Piszcz]

> [    0.696357] ioatdma: Intel(R) QuickData Technology Driver 4.00
> [    0.696487] ioatdma 0000:00:04.0: channel error register unreachable
> I assume this is something Supermicro has to fix?

You are probably missing some kernel config option(s) :) - I did fight
similar
issues on a Fujitsu SandyBridge Xeon based server.

Check if enabling CONFIG_X86_X2APIC helps as well as other APIC/IOMMU
options.

Bruno

=> Enabled:
CONFIG_IOMMU_SUPPORT
CONFIG_INTEL_IOMMU
CONFIG_INTEL_IOMMU_DEFAULT_ON
CONFIG_IRQ_REMAP

Also tried enabling NUMA, etc:

[    0.330998] ACPI FADT declares the system doesn't support PCIe ASPM, so
disable it
[    0.331068] ACPI: bus type pci registered

[    0.615234] ACPI: Dynamic OEM Table Load:
[    0.615373] ACPI: PRAD           (null) 000BE (v02 PRADID  PRADTID
00000001 MSFT 04000000)
[    0.615631] \_SB_:_OSC invalid UUID
[    0.615633] _OSC request data:1 7


[    0.663138] pci 0000:ff:13.5: [8086:3c44] type 00 class 0x110100
[    0.663170] pci 0000:ff:13.6: [8086:3c45] type 00 class 0x088000
[    0.663211]  pci0000:ff: ACPI _OSC support notification failed, disabling
PCIe ASPM
[    0.663281]  pci0000:ff: Unable to request _OSC control (_OSC support
mask: 0x08)

:(

Justin.



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