Public bug reported: On NVIDIA CPU CONFIG_IOMMU_DEFAULT_PASSTHROUGH=y/iommu.passthrough=1 is recommended[0] though bcause of a missing patch [1] we switched to CONFIG_IOMMU_DEFAULT_DMA_LAZY with https://bugs.launchpad.net/ubuntu/+source/linux-nvidia-6.14/+bug/2119661
Now that the patch is there in 6.14 make sure we set CONFIG_IOMMU_DEFAULT_PASSTHROUGH=y by default. [0] https://docs.nvidia.com/grace-perf-tuning-guide/os-settings.html#input-output-memory-management-unit-passthrough [1] https://web.git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ce26ea9e6e12df01432bd2a1cb8cbfa025b8a977 ** Affects: linux-nvidia-6.14 (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2129776 Title: Set CONFIG_IOMMU_DEFAULT_PASSTHROUGH as default for Nvidia CPUs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-nvidia-6.14/+bug/2129776/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
