Gregory Price wrote: > Systems with hotplug may provide an advisement value on what the > memblock size should be. Probe this value when the rest of the > configuration values are considered. > > The new heuristic is as follows > > 1) set_memory_block_size_order value if already set (cmdline param) > 2) minimum block size if memory is less than large block limit > 3) if no hotplug advice: Max block size if system is bare-metal, > otherwise use end of memory alignment. > 4) if hotplug advice: lesser of advice and end of memory alignment. > > Convert to cpu_feature_enabled() while at it.[1] > > [1] https://lore.kernel.org/all/20241031103401.GBZyNdGQ-ZyXKyzC_z@fat_crate.local/ > > Suggested-by: Borislav Petkov <bp@xxxxxxxxx> > Suggested-by: David Hildenbrand <david@xxxxxxxxxx> > Signed-off-by: Gregory Price <gourry@xxxxxxxxxx> > Acked-by: David Hildenbrand <david@xxxxxxxxxx> > Acked-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx> > Acked-by: Mike Rapoport (Microsoft) <rppt@xxxxxxxxxx> > Acked-by: Dan Williams <dan.j.williams@xxxxxxxxx> > Tested-by: Fan Ni <fan.ni@xxxxxxxxxxx> Reviewed-by: Ira Weiny <ira.weiny@xxxxxxxxx> [snip]
