This allows user space to skip pages that are offline when dumping. This is especially relevant when dealing with pages that have been unplugged in the context of virtualization, and their backing storage has already been freed. Signed-off-by: David Hildenbrand <david@xxxxxxxxxx> --- kernel/crash_core.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/kernel/crash_core.c b/kernel/crash_core.c index a93590cdd9e1..d6f21b19aeb3 100644 --- a/kernel/crash_core.c +++ b/kernel/crash_core.c @@ -463,6 +463,9 @@ static int __init crash_save_vmcoreinfo_init(void) #ifdef CONFIG_HUGETLB_PAGE VMCOREINFO_NUMBER(HUGETLB_PAGE_DTOR); #endif +#ifdef CONFIG_MEMORY_HOTPLUG + VMCOREINFO_NUMBER(PG_offline); +#endif arch_crash_save_vmcoreinfo(); update_vmcoreinfo_note(); -- 2.14.3
