On Mon, Dec 12, 2016 at 08:26:50PM -0800, Linus Torvalds wrote: > On Mon, Dec 12, 2016 at 1:53 AM, Thomas Gleixner <t...@linutronix.de> wrote: > > > > This update provides the support for Intel Cache Allocation Technology, a > > cache partitioning mechanism. > > Ugh, this is some funky stuff. And it's entirely x86-specific, with a > rather odd special filesystem interface. > > It looks pretty self-contained (good), but it also looks majorly > strange. I will have to think about this. What are the main/expected > users?
>From what I know its aimed at two groups of users: Firstly the Virtual Machine usecase, where, by assigning cache masks to individual VMs you avoid one highly active VM trashing the cache of another. Secondly the Real-Time usecase, where we can assign cache slices to individual CPUs such that we can better isolate RT and !RT workloads running on the same cache domain (socket).
