On 11/15/2018 04:19 AM, Keith Busch wrote: > This series provides a new sysfs representation for heterogeneous > system memory. > > The previous series that was specific to HMAT that this series was based > on was last posted here: https://lkml.org/lkml/2017/12/13/968 > > Platforms may provide multiple types of cpu attached system memory. The > memory ranges for each type may have different characteristics that > applications may wish to know about when considering what node they want > their memory allocated from. > > It had previously been difficult to describe these setups as memory > rangers were generally lumped into the NUMA node of the CPUs. New > platform attributes have been created and in use today that describe > the more complex memory hierarchies that can be created. > > This series first creates new generic APIs under the kernel's node > representation. These new APIs can be used to create links among local > memory and compute nodes and export characteristics about the memory > nodes. Documentation desribing the new representation are provided. > > Finally the series adds a kernel user for these new APIs from parsing > the ACPI HMAT. Not able to see the patches from this series either on the list or on the archive (https://lkml.org/lkml/2018/11/15/331). IIRC last time we discussed about this and the concern which I raised was in absence of a broader NUMA rework for multi attribute memory it might not a good idea to settle down and freeze sysfs interface for the user space.
