Code:
dmesg | grep iommu
[ 0.000000] Command line: BOOT_IMAGE=/vmlinuz-6.8.12-2-pve root=/dev/mapper/pve-root ro quiet amd_iommu=on iommu=pt
[ 0.022850] Kernel command line: BOOT_IMAGE=/vmlinuz-6.8.12-2-pve root=/dev/mapper/pve-root ro quiet amd_iommu=on iommu=pt
[ 0.545194] iommu: Default domain type: Passthrough (set via kernel command line)
[ 0.591872] pci 0000:00:01.0: Adding to iommu group 0
[ 0.591888] pci 0000:00:01.2: Adding to iommu group 1
[ 0.591918] pci 0000:00:02.0: Adding to iommu group 2
[ 0.591933] pci 0000:00:02.1: Adding to iommu group 3
[ 0.591949] pci 0000:00:02.2: Adding to iommu group 4
[ 0.591965] pci 0000:00:02.3: Adding to iommu group 5
[ 0.591980] pci 0000:00:02.4: Adding to iommu group 6
[ 0.592009] pci 0000:00:03.0: Adding to iommu group 7
[ 0.592026] pci 0000:00:03.1: Adding to iommu group 7
[ 0.592045] pci 0000:00:04.0: Adding to iommu group 8
[ 0.592081] pci 0000:00:08.0: Adding to iommu group 9
[ 0.592097] pci 0000:00:08.1: Adding to iommu group 10
[ 0.592113] pci 0000:00:08.2: Adding to iommu group 11
[ 0.592129] pci 0000:00:08.3: Adding to iommu group 12
[ 0.592155] pci 0000:00:14.0: Adding to iommu group 13
[ 0.592169] pci 0000:00:14.3: Adding to iommu group 13
[ 0.592234] pci 0000:00:18.0: Adding to iommu group 14
[ 0.592248] pci 0000:00:18.1: Adding to iommu group 14
[ 0.592262] pci 0000:00:18.2: Adding to iommu group 14
[ 0.592276] pci 0000:00:18.3: Adding to iommu group 14
[ 0.592289] pci 0000:00:18.4: Adding to iommu group 14
[ 0.592303] pci 0000:00:18.5: Adding to iommu group 14
[ 0.592317] pci 0000:00:18.6: Adding to iommu group 14
[ 0.592331] pci 0000:00:18.7: Adding to iommu group 14
[ 0.592351] pci 0000:01:00.0: Adding to iommu group 15
[ 0.592367] pci 0000:02:00.0: Adding to iommu group 16
[ 0.592383] pci 0000:03:00.0: Adding to iommu group 17
[ 0.592398] pci 0000:04:00.0: Adding to iommu group 18
[ 0.592414] pci 0000:05:00.0: Adding to iommu group 19
[ 0.592442] pci 0000:66:00.0: Adding to iommu group 20
[ 0.592460] pci 0000:66:00.1: Adding to iommu group 21
[ 0.592477] pci 0000:66:00.2: Adding to iommu group 22
[ 0.592497] pci 0000:66:00.3: Adding to iommu group 23
[ 0.592514] pci 0000:66:00.4: Adding to iommu group 24
[ 0.592531] pci 0000:66:00.6: Adding to iommu group 25
[ 0.592550] pci 0000:67:00.0: Adding to iommu group 26
[ 0.592568] pci 0000:67:00.1: Adding to iommu group 27
[ 0.592587] pci 0000:68:00.0: Adding to iommu group 28
[ 0.592605] pci 0000:68:00.3: Adding to iommu group 29
[ 0.592622] pci 0000:68:00.4: Adding to iommu group 30
[ 0.592640] pci 0000:68:00.5: Adding to iommu group 31
[ 0.594247] perf/amd_iommu: Detected AMD IOMMU #0 (2 banks, 4 counters/bank).