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LeJediGris

[RESOLU] Virtualbox et IOMMU

Bonjour,

Il y a apparement un bug pour l'activation de l'IOMMU mais je n'arrive pas à avoir plus de précisions. Apparement c'est un problème de compatibilité de chipset.
le message:

thierry@thierry-OldSysGarage ~ $ dmesg | grep IOMMU
[    0.123642] DMAR: Disabling IOMMU for graphics on this chipset
[    3.429258] AMD IOMMUv2 driver by Joerg Roedel <joerg.roedel@amd.com>
[    3.429262] AMD IOMMUv2 functionality not available on this system
[    6.851754] vboxpci: IOMMU not found (not registered)
thierry@thierry-OldSysGarage ~ $ 

lshw:

thierry@thierry-OldSysGarage ~ $ sudo lshw -c display
  *-display               
       description: VGA compatible controller
       product: Juniper XT [Radeon HD 6770]
       vendor: Advanced Micro Devices, Inc. [AMD/ATI]
       physical id: 0
       bus info: pci@0000:01:00.0
       version: 00
       width: 64 bits
       clock: 33MHz
       capabilities: pm pciexpress msi vga_controller bus_master cap_list rom
       configuration: driver=fglrx_pci latency=0
       resources: irq:43 memory:c0000000-cfffffff memory:dfec0000-dfedffff ioport:ce00(size=256) memory:dfe00000-dfe1ffff
thierry@thierry-OldSysGarage ~ $ 

La CM:

thierry-oldsysgarage      
    description: Desktop Computer
    product: G41M-Combo ()
    vendor: Gigabyte Technology Co., Ltd.
    width: 64 bits
    capabilities: smbios-2.4 dmi-2.4 vsyscall32
    configuration: boot=normal chassis=desktop uuid=00000000-0000-0000-0000-FCAA143EAF99
  *-core
       description: Motherboard
       product: G41M-Combo
       vendor: Gigabyte Technology Co., Ltd.
       physical id: 0
       version: x.x
     *-firmware
          description: BIOS
          vendor: Award Software International, Inc.
          physical id: 0
          version: FB
          date: 10/25/2012
          size: 128KiB
          capacity: 960KiB
          capabilities: pci pnp apm upgrade shadowing cdboot bootselect edd int13floppy360 int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int14serial int17printer int10video acpi usb ls120boot zipboot biosbootspecification
     *-cpu
          description: CPU
          product: Intel(R) Core(TM)2 CPU          6600  @ 2.40GHz
          vendor: Intel Corp.
          physical id: 4
          bus info: cpu@0
          version: Intel(R) Core(TM)2 CPU 6600
          slot: Socket 775
          size: 1600MHz
          capacity: 4GHz
          width: 64 bits
          clock: 266MHz
          capabilities: fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx x86-64 constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm lahf_lm dtherm tpr_shadow cpufreq

Une idée ?

A+

Dernière modification par LeJediGris (Le 06/09/2015, à 12:05)

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%NOINDEX%
Matos Asus Zenbook
"Home Made" Monstro: core i7 9700+32Go de mémoire+SSD QVO Samsung 1To +MoBo Asus Prime Z390P
+ "Terminator", core i5 3570, 16Go, SSD Intel 520 sous Mint 19.3, Freebox Revolution

CADIYAK

Re : [RESOLU] Virtualbox et IOMMU

Je ne sais pas vraiment si ça à un rapport mais est ce que VT-d est activé dans le bios?

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Jah bless...

LeJediGris

Re : [RESOLU] Virtualbox et IOMMU

Salut,

Oui la virtualisation est bien "enabled". Mais je me demande si le chipset (G41) est bien supporté. Je vais regarder de ce coté.

A+

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%NOINDEX%
Matos Asus Zenbook
"Home Made" Monstro: core i7 9700+32Go de mémoire+SSD QVO Samsung 1To +MoBo Asus Prime Z390P
+ "Terminator", core i5 3570, 16Go, SSD Intel 520 sous Mint 19.3, Freebox Revolution

LeJediGris

Re : [RESOLU] Virtualbox et IOMMU

Bon ben CQFD:

While what Wikipedia has listed as "No" is hardware virtualization (referring to Intel's VT-d technology), your motherboard's manual (which does not mention hardware virtualization, but only "Virtualization Technology") actually refers to enabling/disabling processor virtualization (Intel's VT-x technology).

The two are fundamentally different, so to avoid confusion, I will use Intel's VT nomenclature from now on.

Intel's VT-x allows a virtual machine's code to run directly on a CPU, which your motherboard does have support for. Intel's VT-d allows direct access to the chipset's I/O lines (through an actual hardware interface, which your motherboard does not have), which provide DMA support and direct hardware access (instead of emulated).

So in summary, your motherboard does support VT-x (processor virtualization), but it does not support VT-d (hardware virtualization).

En bref je suis fu...d !!

A+

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%NOINDEX%
Matos Asus Zenbook
"Home Made" Monstro: core i7 9700+32Go de mémoire+SSD QVO Samsung 1To +MoBo Asus Prime Z390P
+ "Terminator", core i5 3570, 16Go, SSD Intel 520 sous Mint 19.3, Freebox Revolution