> [ 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. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
