linux-kernel - Re: [PATCH 0/4] nvdimm: Add an IOCTL pass thru for DSM calls

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Message-ID: <20151110213901.GD47666@tevye.fc.hp.com>
Date:	Tue, 10 Nov 2015 14:39:01 -0700
From:	Jerry Hoemann <jerry.hoemann@....com>
To:	Jeff Moyer <jmoyer@...hat.com>
Cc:	ross.zwisler@...ux.intel.com, rjw@...ysocki.net, lenb@...nel.org,
	dan.j.williams@...el.com, linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-nvdimm@...1.01.org
Subject: Re: [PATCH 0/4] nvdimm: Add an IOCTL pass thru for DSM calls

On Tue, Nov 10, 2015 at 10:33:29AM -0500, Jeff Moyer wrote:
> Jerry Hoemann <jerry.hoemann@....com> writes:
> 
> > The NVDIMM code in the kernel supports an IOCTL interface to user
> > space based upon the Intel Example DSM:
> >
> > 	http://pmem.io/documents/NVDIMM_DSM_Interface_Example.pdf
> >
> > This interface cannot be used by other NVDIMM DSMs that support
> > incompatible functions.
> >
> > This patch set adds a generic "passthru" IOCTL interface which
> > is not tied to a particular DSM.
> >
> > A new IOCTL type "P" is added for the pass thru call.
> >
> > The new data structure ndn_pkg serves as a wrapper for the passthru
> > calls.  This wrapper supplies the data that the kernel needs to
> > make the _DSM call.
> 
> What does 'ndn' stand for?  If it stands for NVDIMM-N, then I think

  Yes, hold over from earlier, less generic version.

> that's too narrow a scope.  Anyway, it helps readability if you call out
> what abbreviations mean, especially when it's non-obvious.

  Will fix in version 2.



> 
> > Jerry Hoemann (4):
> >   nvdimm: Add wrapper for IOCTL pass thru.
> >   nvdimm: Add IOCTL pass thru
> >   nvdimm: Add IOCTL pass thru
> 
> You should really give each patch a different subject.


  Will do.


> 
> Cheers,
> Jeff

-- 

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Jerry Hoemann            Software Engineer      Hewlett-Packard Enterprise

3404 E Harmony Rd. MS 36                        phone:  (970) 898-1022
Ft. Collins, CO 80528                           FAX:    (970) 898-0707
                                                email:  jerry.hoemann@....com
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