Better Intel IOMMU Debugging Is On The Way, ARM IOMMU Working On Faster Performance

    Date27 Oct 2018
    CategoryLatest News
    1199
    Posted ByBrittany Day
    Better/easier debugging for Intel VT-d IOMMU is on the way to help iron out any lingering issues with virtualization for directed I/O. The Intel IOMMU driver code is picking up DebugFS support for exposing more data useful to developers when this support is enabled. Via /sys/kernel/debug/intel_iommu/, the IOMMU registers, internal context, and individual table entries are exposed for assisting developers in debugging any issues. The INTEL_IOMMU_DEBUG kernel config switch is added for controlling this behavior and on most platforms reading the kernel debugfs data requires root anyhow for not exposing potentially sensitive data.
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