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 Kernel Packages, which is subscribed to linux-nvidia-6.14 in Ubuntu. https://bugs.launchpad.net/bugs/2129776 Title: Set CONFIG_IOMMU_DEFAULT_PASSTHROUGH as default for Nvidia CPUs Status in linux-nvidia-6.14 package in Ubuntu: New Bug description: 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-nvidia-6.14/+bug/2129776/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
