Amount of free Highmem. Highmem is all memory above ~860MB of physical memory. Highmem areas are for use by userspace programs, or for the pagecache. The kernel must use tricks to access this memory, making it slower to access than lowmem.
Daily updated index of the presence, path and size of this parameter for each model. Last update: 2021-01-15 05:03 GMT. Showing all models using this parameter. Click any column header (click-wait-click) to sort the list by the respective data.
The (main/scrpn/boot/arm/atom) label in the Model column shows which CPU is meant for models with multiple Linux instances.
Note that this list comes from Supportdata-Probes, which can have arbitary settings and come from different firmware versions.
It doesn't say much if a model is not listed here. It may be a missing supportdata file or just a disabled feature.