With regards to the patch here: https://lists.linuxfoundation.org/pipermail/iommu/2021-October/060115.html
It is mentioned this issue can occur if you are passing through a PCI device to a virtual machine guest. This patch seems like it never made it into the kernel. So I am curious if you are using any virtual machines on this host, and if any of them are mapping PCI devices from the host in. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1970453 Title: DMAR: ERROR: DMA PTE for vPFN 0x7bf32 already set To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1970453/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
