On Fri, Nov 24, 2017 at 4:40 AM, Pankaj Gupta <pagu...@redhat.com> wrote: [..] > 1] Expose vNVDIMM memory range to KVM guest. > > - Add flag in ACPI NFIT table for this new memory type. Do we need NVDIMM > spec > changes for this?
Not a flag, but a new "Address Range Type GUID". See section "5.2.25.2 System Physical Address (SPA) Range Structure" in the ACPI 6.2A specification. Since it is a GUID we could define a Linux specific type for this case, but spec changes would allow non-Linux hypervisors to advertise a standard interface to guests.
