On 27.11.18 17:32, Kazuhito Hagio wrote: >> Linux marks pages that are logically offline via a page flag (map count). >> Such pages e.g. include pages infated as part of a balloon driver or >> pages that were not actually onlined when onlining the whole section. >> >> While the hypervisor usually allows to read such inflated memory, we >> basically read and dump data that is completely irrelevant. Also, this >> might result in quite some overhead in the hypervisor. In addition, >> we saw some problems under Hyper-V, whereby we can crash the kernel by >> dumping, when reading memory of a partially onlined memory segment >> (for memory added by the Hyper-V balloon driver). >> >> Therefore, don't read and dump pages that are marked as being logically >> offline. >> >> Signed-off-by: David Hildenbrand <david@xxxxxxxxxx> > > Thanks for the v2 update. > I'm going to merge this patch after the kernel patches are merged > and it tests fine with the kernel. > > Kazu Hi Kazu, the patches are now upstream. Thanks! -- Thanks, David / dhildenb
