On Mon, 31 Oct 2016 17:23:31 +0800
Xiao Guangrong <address@hidden> wrote:
On 10/31/2016 05:20 PM, Igor Mammedov wrote:
On Sun, 30 Oct 2016 23:24:46 +0200
"Michael S. Tsirkin" <address@hidden> wrote:
From: Xiao Guangrong <address@hidden>
According to ACPI 6.0 spec, "Memory Device Physical Address
Region Base" in memdev is defined as "This field provides the
Device Physical Address base of the region". This field should
be zero in our case
I'm not sure that it should be a zero,
care to point source which tells that it should be zero?
The spec says that this is the Device Physical Address, so that
it is the device internal address, it should be zero as we do not
reserve any thing in device internal and we do not have no memory
interleave.
spec says (ACPI 6.1: 5.2.25.3 NVDIMM Region Mapping Structure):
"NVDIMM Physical Address Region Base":
"The base physical address within the NVDIMM of the NVDIMM region."
and nothing more than that so it's hard to come to conclusion that
it's internal address nor it is offset as you treat it here
(structure has 'Region Offset' for that).