> Hi KOSAKI, > Could you please help to give more information on the background > about why 32bit platforms with highmem can't support memory hot-removal? It doesn't impossible. Just nobody did. I was playing these code as a maintainer a while and I saw all of patches doesn't handle highmem correctly. But I didn't refuse because I know it's not a regression. > We are trying to enable memory hot-removal on some 32bit platforms with > highmem, really appreciate your help here! But, if you guys have a strong motivation, it's a very good news. I have no objection not to mark it broken and accept your contributions. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>