On Wed, 23 Oct 2024 16:39:43 -0700 Matthew Brost <matthew.brost@xxxxxxxxx> wrote: > Part of series [1]. Sending as individual patch ahead of that series as > this is a prerequisite for merging. That's news to me - singleton patches are perfectly OK? On Wed, 23 Oct 2024 16:39:44 -0700 Matthew Brost <matthew.brost@xxxxxxxxx> wrote: > Implement migrate_device_pfns to prepare an array of PFNs for migration. > Handles non-contiguous ranges of device pages that require migration. OK, that's "what". We're more interested in "why". > +EXPORT_SYMBOL(migrate_device_pfns); And it's exported to modules, which adds to the significance. Please fully describe the reasons for proposing this change.