How do I load the vfio-mdev kernel module?
I always get this error:
$ sudo modprobe vfio-mdev
modprobe: FATAL: Module vfio-mdev not found in directory /usr/lib/modules/6.1.105-1-MANJARO
I never had any issues with it on Fedora or Ubuntu. Does the Manjaro kernel not support it or am I missing some package?
perhaps this:
Was the vfio_mdev module removed from the 5.15 kernel? | Proxmox Support Forum
(I see two modules: vfio.ko and mdev.ko)
perhaps it is part of the nvidia driver and not present when this driver isn’t installed?
You might start by checking whether or not this module is actually available.
lsmod
modinfo vfio-mdev
Some possibly useful links for reference:
Cheers.
A quick web search indicates that it might now be known as just mdev:
I just ran the command modinfo mdev & got the following output:
filename: /lib/modules/6.10.6-10-MANJARO/kernel/drivers/vfio/mdev/mdev.ko.zst
description: Mediated device Core Driver
author: NVIDIA Corporation
license: GPL v2
version: 0.1
srcversion: E521FE242701157284843B2
depends:
retpoline: Y
intree: Y
name: mdev
vermagic: 6.10.6-10-MANJARO SMP preempt mod_unload
sig_id: PKCS#7
signer: Build time autogenerated kernel key
sig_key: 19:BF:B2:3C:DB:F7:F0:06:F4:92:0F:F3:5C:85:41:E9:AC:B9:F2:B4
sig_hashalgo: sha512
signature: 30:65:02:30:21:3A:00:A0:32:7F:6D:D4:BB:AC:EF:07:65:77:FF:FC:
DA:DF:D5:5A:47:33:BD:31:8C:B0:CA:9A:54:EA:34:9F:46:34:05:53:
06:A5:C6:12:77:D3:AA:E9:06:0D:D1:FA:02:31:00:CF:03:5B:B6:78:
58:02:62:2C:BC:8B:CE:88:73:DE:FE:34:DE:22:85:D4:CD:7D:08:94:
01:26:0C:E5:A3:A7:A7:4C:BF:16:F9:03:0E:06:FF:99:19:E8:60:E7:
A5:A7:20
So you might want to retry your command as:
sudo modprobe mdev
It doesn’t appear to be available:
$ modinfo vfio-mdev
modinfo: ERROR: Module vfio-mdev not found.
$ lsmod
Module Size Used by
nft_masq 16384 3
nft_ct 24576 1
nft_reject_ipv4 16384 2
nft_reject 16384 1 nft_reject_ipv4
nft_chain_nat 16384 2
nf_nat 57344 2 nft_masq,nft_chain_nat
nf_tables 307200 78 nft_reject_ipv4,nft_ct,nft_masq,nft_chain_nat,nft_reject
bridge 368640 0
stp 16384 1 bridge
llc 16384 2 bridge,stp
tun 65536 0
kvmgt 434176 0
mdev 20480 1 kvmgt
vfio_iommu_type1 45056 0
vfio 49152 2 kvmgt,vfio_iommu_type1
rfcomm 94208 4
snd_usb_audio 405504 2
snd_usbmidi_lib 45056 1 snd_usb_audio
snd_rawmidi 49152 1 snd_usbmidi_lib
snd_seq_device 16384 1 snd_rawmidi
mc 77824 1 snd_usb_audio
hid_cherry 16384 0
r8153_ecm 16384 0
cdc_ether 24576 1 r8153_ecm
usbnet 57344 2 r8153_ecm,cdc_ether
r8152 147456 1 r8153_ecm
mii 16384 2 usbnet,r8152
ccm 20480 6
qrtr 57344 2
uhid 20480 1
cmac 16384 3
algif_hash 16384 1
algif_skcipher 16384 1
af_alg 36864 6 algif_hash,algif_skcipher
bnep 28672 2
snd_hda_codec_hdmi 86016 1
hid_sensor_custom_intel_hinge 16384 0
hid_sensor_accel_3d 20480 1
hid_sensor_magn_3d 20480 1
hid_sensor_gyro_3d 20480 0
hid_sensor_rotation 20480 0
hid_sensor_incl_3d 20480 0
hid_sensor_trigger 20480 13 hid_sensor_gyro_3d,hid_sensor_custom_intel_hinge,hid_sensor_incl_3d,hid_sensor_accel_3d,hid_sensor_magn_3d,hid_sensor_rotation
industrialio_triggered_buffer 16384 1 hid_sensor_trigger
kfifo_buf 16384 1 industrialio_triggered_buffer
hid_sensor_iio_common 20480 7 hid_sensor_gyro_3d,hid_sensor_trigger,hid_sensor_custom_intel_hinge,hid_sensor_incl_3d,hid_sensor_accel_3d,hid_sensor_magn_3d,hid_sensor_rotation
industrialio 110592 11 industrialio_triggered_buffer,hid_sensor_gyro_3d,hid_sensor_trigger,hid_sensor_custom_intel_hinge,hid_sensor_incl_3d,kfifo_buf,hid_sensor_accel_3d,hid_sensor_magn_3d,hid_sensor_rotation
hid_sensor_custom 28672 0
joydev 28672 0
mousedev 24576 0
hid_sensor_hub 32768 9 hid_sensor_gyro_3d,hid_sensor_trigger,hid_sensor_iio_common,hid_sensor_custom_intel_hinge,hid_sensor_incl_3d,hid_sensor_accel_3d,hid_sensor_magn_3d,hid_sensor_rotation,hid_sensor_custom
vfat 24576 1
intel_ishtp_hid 28672 0
fat 98304 1 vfat
snd_ctl_led 24576 0
snd_hda_codec_realtek 180224 1
intel_tcc_cooling 16384 0
snd_hda_codec_generic 98304 1 snd_hda_codec_realtek
x86_pkg_temp_thermal 20480 0
intel_powerclamp 20480 0
coretemp 20480 0
iTCO_wdt 16384 0
kvm_intel 393216 0
snd_hda_intel 61440 1
wacom 143360 0
intel_pmc_bxt 16384 1 iTCO_wdt
snd_intel_dspcfg 40960 1 snd_hda_intel
hid_multitouch 32768 0
usbhid 73728 1 wacom
iTCO_vendor_support 16384 1 iTCO_wdt
ath10k_pci 57344 0
snd_intel_sdw_acpi 20480 1 snd_intel_dspcfg
kvm 1163264 2 kvmgt,kvm_intel
dell_laptop 32768 0
snd_hda_codec 188416 4 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek
irqbypass 16384 1 kvm
btusb 69632 0
snd_hda_core 118784 5 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek
ath10k_core 679936 1 ath10k_pci
dell_wmi 32768 1 dell_laptop
btrtl 28672 1 btusb
snd_hwdep 20480 2 snd_usb_audio,snd_hda_codec
btbcm 24576 1 btusb
processor_thermal_device_pci_legacy 16384 0
ath 40960 1 ath10k_core
snd_pcm 172032 5 snd_hda_codec_hdmi,snd_hda_intel,snd_usb_audio,snd_hda_codec,snd_hda_core
rapl 16384 0
btintel 45056 1 btusb
snd_timer 49152 1 snd_pcm
intel_cstate 20480 0
btmtk 16384 1 btusb
dell_smbios 32768 2 dell_wmi,dell_laptop
mei_wdt 16384 0
mei_hdcp 24576 0
mei_pxp 20480 0
intel_rapl_msr 20480 0
dell_smm_hwmon 28672 0
intel_uncore 221184 0
mac80211 1323008 1 ath10k_core
pcspkr 16384 0
bluetooth 942080 32 btrtl,btmtk,btintel,btbcm,bnep,btusb,rfcomm
dell_wmi_sysman 57344 0
snd 135168 19 snd_ctl_led,snd_hda_codec_generic,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_usb_audio,snd_usbmidi_lib,snd_hda_codec,snd_hda_codec_realtek,snd_timer,snd_pcm,snd_rawmidi
processor_thermal_device 20480 1 processor_thermal_device_pci_legacy
dcdbas 20480 1 dell_smbios
i2c_i801 45056 0
processor_thermal_rfim 16384 1 processor_thermal_device
firmware_attributes_class 16384 1 dell_wmi_sysman
libarc4 16384 1 mac80211
ledtrig_audio 16384 4 snd_ctl_led,snd_hda_codec_generic,dell_wmi,dell_laptop
dell_wmi_descriptor 20480 2 dell_wmi,dell_smbios
wmi_bmof 16384 0
intel_wmi_thunderbolt 20480 0
ecdh_generic 16384 2 bluetooth
cdc_acm 49152 0
processor_thermal_mbox 16384 2 processor_thermal_rfim,processor_thermal_device
ucsi_acpi 16384 0
thunderbolt 413696 0
soundcore 16384 2 snd_ctl_led,snd
i2c_smbus 20480 1 i2c_i801
crc16 16384 1 bluetooth
cfg80211 1146880 3 ath,mac80211,ath10k_core
typec_ucsi 53248 1 ucsi_acpi
intel_lpss_pci 28672 0
processor_thermal_rapl 20480 1 processor_thermal_device
mei_me 53248 3
intel_ish_ipc 32768 0
intel_lpss 16384 1 intel_lpss_pci
rfkill 36864 9 bluetooth,dell_laptop,cfg80211
intel_rapl_common 32768 2 intel_rapl_msr,processor_thermal_rapl
typec 90112 1 typec_ucsi
mei 172032 7 mei_wdt,mei_hdcp,mei_pxp,mei_me
intel_soc_dts_iosf 20480 1 processor_thermal_device_pci_legacy
intel_ishtp 69632 2 intel_ishtp_hid,intel_ish_ipc
roles 16384 1 typec_ucsi
idma64 20480 0
intel_pch_thermal 20480 0
i2c_hid_acpi 16384 0
int3403_thermal 20480 0
i2c_hid 40960 1 i2c_hid_acpi
intel_vbtn 24576 0
soc_button_array 24576 0
int340x_thermal_zone 20480 2 int3403_thermal,processor_thermal_device
intel_hid 28672 0
int3400_thermal 20480 0
sparse_keymap 16384 3 intel_hid,dell_wmi,intel_vbtn
acpi_thermal_rel 16384 1 int3400_thermal
acpi_pad 24576 0
squashfs 86016 9
mac_hid 16384 0
ip6t_REJECT 16384 1
nf_reject_ipv6 20480 1 ip6t_REJECT
xt_hl 16384 22
ip6t_rt 20480 3
ipt_REJECT 16384 1
nf_reject_ipv4 16384 2 nft_reject_ipv4,ipt_REJECT
xt_LOG 20480 10
nf_log_syslog 24576 10
xt_multiport 20480 4
xt_limit 16384 13
xt_addrtype 16384 4
xt_tcpudp 20480 26
xt_conntrack 16384 16
nf_conntrack 184320 4 xt_conntrack,nf_nat,nft_ct,nft_masq
nf_defrag_ipv6 24576 1 nf_conntrack
nf_defrag_ipv4 16384 1 nf_conntrack
ip6table_filter 16384 1
ip6_tables 36864 53 ip6table_filter
iptable_filter 16384 1
sg 49152 0
crypto_user 24576 0
fuse 176128 5
loop 36864 18
nfnetlink 20480 2 nf_tables
bpf_preload 24576 0
ip_tables 36864 9 iptable_filter
x_tables 57344 14 ip6table_filter,xt_conntrack,iptable_filter,xt_LOG,xt_multiport,xt_tcpudp,xt_addrtype,ip6t_rt,ip6_tables,ipt_REJECT,ip_tables,xt_limit,xt_hl,ip6t_REJECT
btrfs 1974272 1
blake2b_generic 20480 0
libcrc32c 16384 4 nf_conntrack,nf_nat,btrfs,nf_tables
crc32c_generic 16384 0
xor 24576 1 btrfs
raid6_pq 122880 1 btrfs
dm_crypt 61440 2
cbc 16384 0
encrypted_keys 28672 1 dm_crypt
trusted 53248 2 encrypted_keys,dm_crypt
asn1_encoder 16384 1 trusted
tee 36864 1 trusted
dm_mod 192512 6 dm_crypt
crct10dif_pclmul 16384 1
amdgpu 10559488 4
crc32_pclmul 16384 0
polyval_clmulni 16384 0
serio_raw 20480 0
polyval_generic 16384 1 polyval_clmulni
i915 3235840 68 kvmgt
rtsx_pci_sdmmc 32768 0
atkbd 36864 0
gf128mul 16384 1 polyval_generic
libps2 20480 1 atkbd
mmc_core 233472 1 rtsx_pci_sdmmc
vivaldi_fmap 16384 1 atkbd
ghash_clmulni_intel 16384 0
sha512_ssse3 53248 0
sha256_ssse3 36864 1
sha1_ssse3 32768 2
aesni_intel 393216 12
drm_ttm_helper 16384 1 amdgpu
nvme 61440 3
intel_gtt 28672 1 i915
crypto_simd 16384 1 aesni_intel
ttm 98304 3 amdgpu,drm_ttm_helper,i915
cryptd 24576 5 crypto_simd,ghash_clmulni_intel
gpu_sched 49152 1 amdgpu
nvme_core 212992 4 nvme
drm_buddy 20480 2 amdgpu,i915
xhci_pci 24576 0
nvme_common 24576 1 nvme_core
drm_display_helper 184320 2 amdgpu,i915
rtsx_pci 114688 1 rtsx_pci_sdmmc
xhci_pci_renesas 24576 1 xhci_pci
cec 81920 2 drm_display_helper,i915
video 69632 4 dell_wmi,amdgpu,dell_laptop,i915
i8042 49152 1 dell_laptop
serio 28672 4 serio_raw,atkbd,i8042
wmi 45056 7 dell_wmi_sysman,video,intel_wmi_thunderbolt,dell_wmi,wmi_bmof,dell_smbios,dell_wmi_descriptor
crc32c_intel 24576 2
$ modinfo vfio-mdev
modinfo: ERROR: Module vfio-mdev not found.
mdev exists indeed and I can load it. If it indeed does the same thing as vfio-mdev then my issue has been resolved. I’ll have to do some testing to verify.
Why can’t I load kernel module vfio_mdev?
Indeed.
That would tend to answer your question, and resolve the thread.
If you wish to change the scope of the thread to seek information about mdev, you might consider changing the thread title appropriately to attract more input.
Cheers.