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    SubjectRe: [PATCH 0/3] ACPI: parse the SPCR table
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    Hi Al,

    Somehow your email was filtered. Apologies for that.

    On 02/10/2016 03:39 PM, Al Stone wrote:
    > On 01/27/2016 05:17 AM, Aleksey Makarov wrote:
    >>
    >>
    >> On 01/25/2016 07:11 PM, Peter Hurley wrote:
    >>> On 01/25/2016 03:45 AM, Aleksey Makarov wrote:
    >>>> This patchset is based on the patchset by Leif Lindholm [1]
    >>>>
    >>>> 'ARM Server Base Boot Requirements' [2] mention SPCR
    >>>> (Serial Port Console Redirection Table) [3] as a mandatory
    >>>> ACPI table that specifies the configuration of serial console.
    >>>>
    >>>> Licensing concerns have prevented implementing it in the past, but as of
    >>>> 10 August 2015, these tables have both been released also under
    >>>> OWF 1.0 [4].
    >>>
    >>> This license has a patent retaliation provision, which makes it
    >>> incompatible with GPLv2.
    >>>
    >>> *If the license applies to this code*, then this patch set does not
    >>> meet the criteria for submission.
    >>
    >> The license applies not to this code but to the document describing the tables.
    >
    > Just for the record, the SPCR table struct definition has been part
    > of the Linux kernel since at least commit b24aad44 on 2009-07-24
    > (line 1112 of include/acpi/actbl2.h) -- or so git blame tells me.

    Just to be clear here:

    The Microsoft specification, which defines the SPCR table struct and which
    this patch series relies on, notes that patents apply. Specifically, it
    says:

    Patent Notice:
    Microsoft is making certain patent rights available for implementations of this specification under two options:
    1) Microsoft’s Community Promise, available at http://www.microsoft.com/openspecifications/en/us/programs/community-promise/default.aspx; or
    2) The Open Web Foundation Final Specification Agreement Version 1.0 ("OWF 1.0") as of October 1, 2012, available at http://www.openwebfoundation.org/legal/the-owf-1-0-agreements/owfa-1-0.
    Version 1.03 — August 10, 2015

    I don't believe either of those patent licenses are GPL compatible.

    Unless you're saying Red Hat is signing off on this?

    Regards,
    Peter Hurley

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