From: David Hildenbrand
Sent: November 14, 2018 at 9:16:58 PM GMT

Subject: [PATCH RFC 0/6] mm/kdump: allow to exclude pages that are logically offline


Right now, pages inflated as part of a balloon driver will be dumped
by dump tools like makedumpfile. While XEN is able to check in the
crash kernel whether a certain pfn is actuall backed by memory in the
hypervisor (see xen_oldmem_pfn_is_ram) and optimize this case, dumps of
virtio-balloon and hv-balloon inflated memory will essentially result in
zero pages getting allocated by the hypervisor and the dump getting
filled with this data.

Is there any reason that VMware balloon driver is not mentioned?