On Tue, May 14, 2024 at 01:43:29PM +0200, Yiannis Nikolakopoulos wrote: > Hello all, > > This is almost literally last minute and the work itself is only > getting started. But since I'm virtually attending, I thought to give > it a shot in case it is of interest. > > Background: at ZeroPoint Technologies we are developing inline memory > compression IP. Currently we are focusing on CXL type 3 devices > (memory expanders), effectively introducing a compressed memory tier > (i.e. fulfilling the OCP specification "Hyperscale CXL Tiered Memory > Expander Specification”). > > To utilize the memory saved due to compression, we oversubscribe the > Device Physical Address Space (DPA) in addition to some custom .io > interfaces. If there is interest, I would be glad to present these > APIs and how the host's point of view changes compared to a "typical" > memory tiering system. The goal would be to get some early feedback > and direction for our upstream driver development, before we start > pushing the first RFCs. I am interested in understanding the interfaces and how the memory will be consumed and presented by the MM subsystem. It is my understanding that we have a 30 min slot for CXL related topics open this morning. I think this would be a good fit. > > Best regards, > Yiannis Nikolakopoulos
