Dexter74 (2)

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dmesg | grep AMD-Vi
    [0.251399] [Firmware Bug]: AMD-Vi: IOAPIC[9] not in IVRS table          <= SouthBridge Inconnus (Erreur 9)
    [0.251403] [Firmware Bug]: AMD-Vi: IOAPIC[10] not in IVRS table         <= Northbridge Inconnus (Erreur 10)
    [0.251405] [Firmware Bug]: AMD-Vi: No southbridge IOAPIC found
    [0.251407] AMD-Vi: Disabling interrupt remapping                        <= Interruption du mappage est sur désactiver (Disabled , Enabled requis)
    [5.812399] AMD-Vi: Found IOMMU at 0000:00:00.2 cap 0x40
    [5.812507] AMD-Vi: Lazy IO/TLB flushing enabled

lspci | grep SMBus
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 SMBus Controller (rev 42)

lspci | grep IOMMU
00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD/ATI] RD990 I/O Memory Management Unit (IOMMU)



------ FIX IOMMU ------
sudo gedit /etc/default/grub && sudo update-grub
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash amd_iommu=on ivrs_ioapic[9]=00:14.0 ivrs_ioapic[10]=00:00.2"
ivrs_ioapic[Code Erreur]=<Adresse Relevé>

dmesg | grep AMD-Vi
    [    1.597597] AMD-Vi: Found IOMMU at 0000:00:00.2 cap 0x40
    [    1.597598] AMD-Vi: Interrupt remapping enabled                      <= L intérruption du mappage est sur Activer (Enabled)
    [    1.597712] AMD-Vi: Lazy IO/TLB flushing enabled


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IOMMU: Activer , trouver et sans erreur
######################################
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Lister matériel + pilote (seule les lignes que j'ai garder sont intéressante)

lspci -k
02:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Curacao XT [Radeon R7 370 / R9 270X/370 OEM]
    Kernel driver in use: radeon

02:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Cape Verde/Pitcairn HDMI Audio [Radeon HD 7700/7800 Series]
    Kernel driver in use: radeon


lspci -nn | grep "VGA\|Audio"
00:14.2 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 Azalia (Intel HDA) [1002:4383] (rev 40)
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GT200 [GeForce GTX 260] [10de:05e2] (rev a1)
02:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Curacao XT [Radeon R7 370 / R9 270X/370 OEM] [1002:6810]
02:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Cape Verde/Pitcairn HDMI Audio [Radeon HD 7700/7800 Series] [1002:aab0]

lsusb
Bus 004 Device 003: ID 1bcf:0002 Sunplus Innovation Technology Inc.
Bus 004 Device 002: ID 04d9:a055 Holtek Semiconductor, Inc. Keyboard

lscpu
CPU(s)             : 8
Thread(s) par cœur : 2
Cœur(s) par socket : 4
Model name         : AMD FX(tm)-8120 Eight-Core Processor


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Récapitulatif:
GPU: 02:00.0 / 1002:6810
Audio GPU: 02:00.1 / 1002:aab0
Pilote GPU: radeon
Pilote Audio: radeon
USB 1: Bus 004 Device 002
USB 2: Bus 004 Device 003
CPU: 8 | Thread 2 | socket 4 (Pas sure que sa marche comme sa en rapport avec le smp de qemu)

cat /etc/vfio-pci.cfg
DEVICES="0000:02:00.0 0000:02:00.1"

cat /etc/modprobe.d/vfio.conf
options vfio-pci ids=1002:6810,1002:aab0



sudo gedit /etc/modules     #Processeur AMD donc kvm_amd et non kvm_intel
pci_stub
vfio
vfio_iommu_type1
vfio_pci
kvm
kvm_amd


sudo gedit /etc/modprobe.d/blacklist.conf
blacklist radeon


#Application de la configuration
sudo update-initramfs -u && sudo update-grub && sudo reboot

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https://forum.ubuntu-fr.org/viewtopic.php?pid=21504428#p21504428