[dpdk-dev] [PATCH] vfio: support iommu group zero

Thomas Monjalon thomas.monjalon at 6wind.com
Thu Dec 10 21:30:35 CET 2015


> > The current implementation of VFIO will not with the new no-IOMMU mode
> > in 4.4 kernel. The original code assumed that IOMMU group zero would
> > never be used. Group numbers are assigned starting at zero, and up until
> > now the group numbers came from the hardware which is likely to use group
> > 0 for system devices that are not used with DPDK.
> > 
> > The fix is to allow 0 as a valid group and rearrange code to split the return
> > value from the group value.
> > 
> > Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
> 
> Acked-by: Anatoly Burakov <anatoly.burakov at intel.com>

Applied, thanks

Stephen, please keep us updated about VFIO no-iommu.


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