On Fri, 2015-11-20 at 10:57 +0000, Robin Murphy wrote: > Whilst blindly assuming the worst case for segment boundaries and > aligning every segment individually is safe from the point of view > of respecting the device's parameters, it is also undeniably a waste > of IOVA space. Futhermore, the knock-on effects of more pages than > necessary being exposed to device access, additional overhead in page > table updates and TLB invalidations, etc., are even more undesirable. > > Improve matters by taking the actual boundary mask into account to > actively detect the cases in which we really do need to adjust a > segment, and avoid wasting space in the remainder. > > Tested-by: Yong Wu <[email protected]> > Signed-off-by: Robin Murphy <[email protected]> > ---
Hi Robin, Joerg, Is there any plan for this patch? It seems to be lost. Could we pick this up as a fix for v4.5? Thanks. _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
