Re: [PATCH 3/3] kvm: add a function to check if page is from NVDIMM pmem.
From: Paolo Bonzini
Date: Wed Jul 04 2018 - 11:27:31 EST
On 04/07/2018 16:50, Dan Williams wrote:
>> + return is_zone_device_page(page) &&
>> + ((page->pgmap->type == MEMORY_DEVICE_FS_DAX) ||
>> + (page->pgmap->type == MEMORY_DEVICE_DEV_DAX));
> Jerome, might there be any use case to pass MEMORY_DEVICE_PUBLIC
> memory to a guest vm?
An even better reason to place this in mm.h. :) There should be an
function to tell you if a reserved page has accessed/dirty bits etc.,
that's all that KVM needs to know.