On Tue, Jun 30, 2015 at 02:47:00PM +0300, Sagi Grimberg wrote: > Kernel 4.1 introduced the new pmem driver for byte addressable storage > (https://lwn.net/Articles/640115/). It won't be long before we see HA > models where secondary persistent memory devices will sit across an > RDMA fabric. > (http://www.snia.org/sites/default/files/DougVoigt_RDMA_Requirements_for_HA.pdf)
And what does this bullshitting slide have to do with our memory models? In it's current form the pmem driver can't even be used as a (R)DMA target, so it's totally irrelevant for now. Let's get a proper in-kernel interface for generic memory registrations in place as a first step. le this will be a significant amount of work it'll help greatly with moving nasty implementation details out of the drivers. Adding additional registrations methods will be easy behind the back of a proper abstraction. > Do we want to live with this limitation forever? I don't think anyone has refused additional support. Just the way how it's done in your patches is a giant nightmare. The whole RDMA stack needs a healthy dose of software engineering instead of blindly following a working group of a marketing organisation. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
