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    SubjectRe: [PATCH AUTOSEL 4.19 204/205] s390/qeth: limit csum offload erratum to L3 devices
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    From: Greg KH <gregkh@linuxfoundation.org>
    Date: Fri, 8 Nov 2019 13:34:16 +0100

    > On Fri, Nov 08, 2019 at 01:16:26PM +0100, Julian Wiedmann wrote:
    >> On 08.11.19 13:00, Sasha Levin wrote:
    >> > On Fri, Nov 08, 2019 at 12:50:24PM +0100, Julian Wiedmann wrote:
    >> >> On 08.11.19 12:37, Sasha Levin wrote:
    >> >>> From: Julian Wiedmann <jwi@linux.ibm.com>
    >> >>>
    >> >>> [ Upstream commit f231dc9dbd789b0f98a15941e3cebedb4ad72ad5 ]
    >> >>>
    >> >>> Combined L3+L4 csum offload is only required for some L3 HW. So for
    >> >>> L2 devices, don't offload the IP header csum calculation.
    >> >>>
    >> >>
    >> >> NACK, this has no relevance for stable.
    >> >
    >> > Sure, I'll drop it.
    >> >
    >> > Do you have an idea why the centos and ubuntu folks might have
    >> > backported this commit into their kernels?
    >> >
    >>
    >> No clue, I trust they have their own reasons.
    >>
    >
    > I cant see centos backporting anything unless they were asked to do so.
    > And this really looks like a "bugfix" to me, why isn't this relevant for
    > any older kernel versions?

    Yeah seriously, this looks entirely legit.

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