https://bugzilla.kernel.org/show_bug.cgi?id=220057 --- Comment #19 from Alex Williamson (alex.williamson@xxxxxxxxxx) --- (In reply to Adolfo from comment #16) > > Doesn't seam to do anything, no. > > ---- > cores: 8 > cpu: host,flags=+pdpe1gb,phys-bits=39 > cpuunits: 200 > efidisk0: local-lvm:vm-200-disk-0,efitype=4m,pre-enrolled-keys=1,size=4 > ... I'm getting that option from here: https://pve.proxmox.com/wiki/Manual:_qm.conf Can you find the QEMU command line in ps while the VM is running? ex. `ps aux | grep qemu` There should be a difference in the QEMU command line proxmox is using with the option, and it should at least change the addresses based at 0x380000000000 in the logs. I think the issue with the failed mappings is that you CPU physical address width is 46-bits: Address sizes: 46 bits physical, 48 bits virtual But the host IOMMU width is 39-bits: [ 0.341856] DMAR: Host address width 39 Therefore the VM is giving the devices an IOVA that cannot be mapped by the host IOMMU. I don't know if ultimately that contributes to the issue you're reporting, but it might. -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
