Ubuntu
linux package

  1. Bug #1951440
  2. Comment #0

Comment 0 for bug 1951440

Revision history for this message
Andrea Righi (arighi) wrote : Enable INTEL_IOMMU_DEFAULT_ON and CONFIG_INTEL_IOMMU_SCALABLE_MODE_DEFAULT_ON on jammy 5.15

Starting with the following commit, upstream kernel is enabling Intel IOMMU related options by default:

 792fb43ce2c9 ("iommu/vt-d: Enable Intel IOMMU scalable mode by default")

We should follow upstream direction enabling INTEL_IOMMU_DEFAULT_ON and CONFIG_INTEL_IOMMU_SCALABLE_MODE_DEFAULT_ON.

A downside is that this change may introduce boot regressions on old systems (especially those with buggy firmware).