On Fri, Mar 19, 2021 at 11:20:19AM +0100, David Hildenbrand wrote: > > +bool mhp_supports_memmap_on_memory(unsigned long size) > > +{ > > + unsigned long nr_vmemmap_pages = size / PAGE_SIZE; > > + unsigned long vmemmap_size = nr_vmemmap_pages * sizeof(struct page); > > + unsigned long remaining_size = size - vmemmap_size; > > + > > + /* > > + * Besides having arch support and the feature enabled at runtime, we > > + * need a few more assumptions to hold true: > > + * > > + * a) We span a single memory block: memory onlining/offlinin;g happens > > s/offlinin;g/offlining;/ Bleh, terrible :-( > IS_ALIGNED(remaining_size, pageblock_nr_pages << PAGE_SHIFT); Yaiks Hopefully Andrew can amend these two nits? > (another pair of eyes certainly wouldn't hurt :) ) definitely, but those are pricy as you may know :-D > Reviewed-by: David Hildenbrand <david@xxxxxxxxxx> Thanks a lot for the throughout review David, highly appreciated! -- Oscar Salvador SUSE L3