On Sat, Dec 02, 2023 at 02:18:52PM +0300, Serge Semin wrote: > Besides of the already described reasons the pages backended memory holes > might present due to having non-memory regions covered by the contiguous > flatmem mapping. Add such note to the init_unavailable_range() method kdoc > in order to point out to one more reason of having the function executed > for such regions. > > Signed-off-by: Serge Semin <fancer.lancer@xxxxxxxxx> Reviewed-by: Mike Rapoport (IBM) <rppt@xxxxxxxxxx> > > --- > > Link: https://lore.kernel.org/linux-mips/20231122182419.30633-6-fancer.lancer@xxxxxxxxx/ > Changelog v2: > - The holes in the memory are actually justified by having the flatmem > mapping model. Change the patch and the log accordingly. (@Mike) > --- > mm/mm_init.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/mm/mm_init.c b/mm/mm_init.c > index 077bfe393b5e..824bf53e8253 100644 > --- a/mm/mm_init.c > +++ b/mm/mm_init.c > @@ -796,6 +796,7 @@ overlap_memmap_init(unsigned long zone, unsigned long *pfn) > * - physical memory bank size is not necessarily the exact multiple of the > * arbitrary section size > * - early reserved memory may not be listed in memblock.memory > + * - non-memory regions covered by the contigious flatmem mapping > * - memory layouts defined with memmap= kernel parameter may not align > * nicely with memmap sections > * > -- > 2.42.1 > -- Sincerely yours, Mike.
