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Re: [dmidecode] [PATCH] dmidecode: Add option to filter output based upo
Elliott, Robert (Persistent Memory)
Re: [dmidecode] [PATCH] dmidecode: Add option to filter output based upon handle
Fri, 29 Jun 2018 13:59:20 +0000
> -----Original Message-----
> From: Jean Delvare <address@hidden>
> Sent: Friday, June 29, 2018 4:09 AM
> To: Hoemann, Jerry <address@hidden>
> Cc: address@hidden; Elliott, Robert (Persistent Memory)
> Subject: Re: [PATCH] dmidecode: Add option to filter output based
> upon handle
> Hi Jerry,
> On Thu, 28 Jun 2018 14:08:06 -0600, Jerry Hoemann wrote:
> > Add option "--handle HANDLE" to dmiopt to allow user to filter
> > ouput to only those entrie(s) that match HANDLE.
> I am curious what you need this feature for? Handle numbers are
> arbitrary and not portable, so it never occurred to me that someone
> could need to query for a specific handle.
The ACPI NFIT (NVDIMM Firmware Interface Table) reports the SMBIOS
handle of each NVDIMM (in a field called Physical ID). So, this
helps follow that to find the rest of the information about the
NVDIMM that is being provided by system firmware.
Similarly, the ACPI PMTT (Platform Memory Topology Table) and HMAT
(Heterogeneous Memory Attribute Table) include SMBIOS handles for
the DIMMs whose attributes they are describing.
Robert Elliott, HPE Persistent Memory