Hi KOSAKI, On Sat, May 25, 2013 at 09:16:24PM -0400, KOSAKI Motohiro wrote: >> --- >> mm/page_alloc.c | 2 ++ >> 1 file changed, 2 insertions(+) >> >> diff --git a/mm/page_alloc.c b/mm/page_alloc.c >> index 98cbdf6..23b921f 100644 >> --- a/mm/page_alloc.c >> +++ b/mm/page_alloc.c >> @@ -6140,6 +6140,8 @@ __offline_isolated_pages(unsigned long start_pfn, unsigned long end_pfn) >> list_del(&page->lru); >> rmv_page_order(page); >> zone->free_area[order].nr_free--; >> + if (PageHighMem(page)) >> + totalhigh_pages -= 1 << order; >> for (i = 0; i < (1 << order); i++) >> SetPageReserved((page+i)); >> pfn += (1 << order); > >memory hotplug don't support 32bit since it was born, at least, when the system has highmem. >Why can't we disable memory hotremove when 32bit at compile time? Here is logic memory remove instead of ACPI based memory remove. ;-) Regards, Wanpeng Li > -- 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>