https://bugzilla.kernel.org/show_bug.cgi?id=42636
Daniel Mayer <listenmitgl...@arcor.de> changed:
What |Removed |Added
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CC| |listenmitgl...@arcor.de
--- Comment #3 from Daniel Mayer <listenmitgl...@arcor.de> 2012-03-30 07:48:26
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Hi,
I feel with you - I had many, many headaches with PCI-PTrough...
You said you unloaded the driver module for both devices.
a) do you have the pcistub module available (kernel config)? For some PCI
devices I had to enable both DMA and IRQ remapping in the kernel. The latter is
disabled by default. Otherwise: sometimes, especially with older PCI cards, IRQ
remapping had to be disabled... at least as module or compiled-in:
Bus options (PCI etc.) --> Support for DMA Remapping Devices
Bus options (PCI etc.) --> Enable DMA Remapping Devices
Bus options (PCI etc.) --> PCI Stub driver
[quote]
Of course, I unloaded the module of this additional device
before trying to passthrough it to the guest.[/qoute]
b) Did you try to assign the pcistub driver as printed here:
http://www.linux-kvm.org/page/How_to_assign_devices_with_VT-d_in_KVM
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