[Bug 42636] PCI passthrough does not work with AMD iommu for PCI device

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=42636





--- Comment #7 from Klaus Mueller <kmueller@justmail.de>  2012-03-30 12:16:39 ---
Thanks,
with the "iommu=pt iommu=1" options applied it doesn't work at all - even the
"workaround" with first try to start with the bridge applied and afterwards
without the bridge added isn't working then.

BTW: I can pass through PCIe devices, as long as they have different PCI ids
and different modules, without any problem.

I'm using the option allow_unsafe_assigned_interrupts=1 already!

I think there is a problem with the handling of the device behind a PCI bridge,
which should be fixed (-> the Ralink device which should be passed through is a
PCI device and not a PCIe device)! Take a look at the qemu-kvm crash log
https://bugzilla.kernel.org/attachment.cgi?id=72753

-- 
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.