On Sun, 2015-03-22 at 20:36 +0100, Arnd Bergmann wrote: > How does this relate to the ARM implementation? There is currently > an effort going on to make that one shared with ARM64 and possibly > x86. Has anyone looked at both the PowerPC and ARM ways of doing the > allocation to see if we could pick one of the two to work on > all architectures?
What I see in ARM is horribly complex, I can't quite make sense of it in a couple of minutes of looking at it, and doesn't seem to address the basic issue we are addressing here which is the splitting of the iommu table lock. I think we are looking at two very different approaches here. One is to deal with horrendously broken HW which is an ARM SoC vendors signature :) The other one is about performances and scalability on sane HW. Cheers, Ben. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
