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

Nadav Amit
2018-11-14T22:57:51Z

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?