Groups > linux.kernel > #1682052

Re: [PATCH v4 3/6] libnvdimm, acpi, nfit: Add bus level dsm mask for pass thru.

From	Dan Williams <dan.j.williams@intel.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH v4 3/6] libnvdimm, acpi, nfit: Add bus level dsm mask for pass thru.
Date	2017-07-06 07:30 +0200
Message-ID	<u07wt-8qx-7@gated-at.bofh.it> (permalink)
References	(6 earlier) <tZCj2-4M6-37@gated-at.bofh.it> <tZCM2-4Vk-3@gated-at.bofh.it> <tZVlE-aF-15@gated-at.bofh.it> <tZVvk-dV-21@gated-at.bofh.it> <u01Kq-4tO-9@gated-at.bofh.it>
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On Wed, Jul 5, 2017 at 4:14 PM, Jerry Hoemann <jerry.hoemann@hpe.com> wrote:
> On Wed, Jul 05, 2017 at 09:35:48AM -0700, Dan Williams wrote:
[..]
>> It was a mistake to use _DSM for common root-level functionality, and
>> we shouldn't double down on that mistake by allowing unfettered
>
> As to the moral aspects of ACPI's decision to standardiz the DSM for NVDIMM,
> I take no position on whether it was a good thing or a bad thing; but it
> is a thing.  We need to handle it.  I see no particular benefit to
> making our own lives more difficult.

We do handle everything we need to. Making future updates move at the
same pace as standard ACPI enabing is the goal as well as not adding
any momentum to continue abusing _DSM when we should be creating named
methods for bus-level generic functionality. As a maintainer of this
subsystem I'm fine with the burden of continuing to touch the code as
the specification evolves and that stance matches standard Linux
practice.

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Re: [PATCH v4 3/6] libnvdimm, acpi, nfit: Add bus level dsm mask for  pass thru. Jerry Hoemann <jerry.hoemann@hpe.com> - 2017-07-04 22:10 +0200
  Re: [PATCH v4 3/6] libnvdimm, acpi, nfit: Add bus level dsm mask for  pass thru. Dan Williams <dan.j.williams@intel.com> - 2017-07-04 22:40 +0200
    Re: [PATCH v4 3/6] libnvdimm, acpi, nfit: Add bus level dsm mask for  pass thru. Jerry Hoemann <jerry.hoemann@hpe.com> - 2017-07-05 18:30 +0200
      Re: [PATCH v4 3/6] libnvdimm, acpi, nfit: Add bus level dsm mask for  pass thru. Dan Williams <dan.j.williams@intel.com> - 2017-07-05 18:40 +0200
        Re: [PATCH v4 3/6] libnvdimm, acpi, nfit: Add bus level dsm mask for  pass thru. Jerry Hoemann <jerry.hoemann@hpe.com> - 2017-07-06 01:20 +0200
          Re: [PATCH v4 3/6] libnvdimm, acpi, nfit: Add bus level dsm mask for  pass thru. Dan Williams <dan.j.williams@intel.com> - 2017-07-06 07:30 +0200

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