On (03/23/15 09:02), Benjamin Herrenschmidt 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. Amen to that.. I thought it was just me :-) I plan to go through the code to see if/where the armd iommu code does its locking and achieves its parallelism, but the mapping between the sparc/powerpc approach and armd is not immediately obvious to me. --Sowmini -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
