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xen-devel
Re: [Xen-devel] AMD_IOV: IO_PAGE_FALT trying to pass through Mellanox Co
> Hmm, I do have it:
Indeed you do. Good!
>
> # xm dmesg |grep iommu
> (XEN) Command line: placeholder iommu=pv,verbose,amd_iommu_debug
>
> But maybe it's not being picked up?
You should see something passthrough in the log.. thought that might
be only if you are using Intel VT-d? Not sure.
>
> > you might need to make sure your driver is using the VM_IO flag.
> >
> > There was some discussion on LKML about this and they proposed
> > a patch that wasn't neccessary. Don't remember the details but I can
> > look that up next week.
Found it.. it was from Vivien but in another thread:
http://www.mail-archive.com/linux-rdma@xxxxxxxxxxxxxxx/msg06980.html
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