On 12.06.2015 [16:47:03 +1000], Gavin Shan wrote: > On Fri, Jun 12, 2015 at 04:19:17PM +1000, Alexey Kardashevskiy wrote: > >The existing code puts all devices from a root PE to the same IOMMU group. > >However it is a possible situation when subordinate buses belong to > >separate PEs, in this case devices from these subordinate buses > >should be added to lower level PE rather to the root PE. > > > >This limits pnv_ioda_setup_bus_dma() invocation to only PEs which own > >all subordinate buses. > > > >Suggested-by: Gavin Shan <gws...@linux.vnet.ibm.com> > >Signed-off-by: Alexey Kardashevskiy <a...@ozlabs.ru> > > Alexey, I think it's good candidate for stable.
Why? This commit message doesn't imply there is a serious bug just a "possible" (does that mean theoretical?) situtation and the following: > >This would be nice to have together with the DDW patchset. > >This does not fix anything DDW patchset did, it fixes IOMMU > >groups management which is essential for the whole feature to work. implies it is both related and independent of DDW? -Nish -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
