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Re: [BUG] Page allocation failures with newest kernels

From Marcin Wojtas <mw@semihalf.com>
Newsgroups linux.kernel
Subject Re: [BUG] Page allocation failures with newest kernels
Date 2016-05-31 12:40 +0200
Message-ID <rEPfD-1vx-135@gated-at.bofh.it> (permalink)
References <rEIe5-5aD-3@gated-at.bofh.it> <rEOWe-1nn-19@gated-at.bofh.it>
Organization linux.* mail to news gateway

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Hi Robin,

>
> I remember there were some issues around 4.2 with the revision of the arm64
> atomic implementations affecting the cmpxchg_double() in SLUB, but those
> should all be fixed (and the symptoms tended to be considerably more fatal).
> A stronger candidate would be 97303480753e (which landed in 4.4), which has
> various knock-on effects on the layout of SLUB internals - does fiddling
> with L1_CACHE_SHIFT make any difference?
>

I'll check the commits, thanks. I forgot to add L1_CACHE_SHIFT was my
first suspect - I had spent a long time debugging network controller,
which stopped working because of this change - L1_CACHE_BYTES (and
hence NET_SKB_PAD) not fitting HW constraints. Anyway reverting it
didn't help at all for page alloc issue.

Best regards,
Marcin

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Thread

[BUG] Page allocation failures with newest kernels Marcin Wojtas <mw@semihalf.com> - 2016-05-31 05:10 +0200
  Re: [BUG] Page allocation failures with newest kernels Robin Murphy <robin.murphy@arm.com> - 2016-05-31 12:20 +0200
    Re: [BUG] Page allocation failures with newest kernels Marcin Wojtas <mw@semihalf.com> - 2016-05-31 12:40 +0200
      RE: [BUG] Page allocation failures with newest kernels Yehuda Yitschak <yehuday@marvell.com> - 2016-05-31 15:20 +0200
        Re: [BUG] Page allocation failures with newest kernels Will Deacon <will.deacon@arm.com> - 2016-05-31 15:20 +0200
          Re: [BUG] Page allocation failures with newest kernels Marcin Wojtas <mw@semihalf.com> - 2016-06-02 07:50 +0200
            Re: [BUG] Page allocation failures with newest kernels Mel Gorman <mgorman@techsingularity.net> - 2016-06-02 16:00 +0200
              Re: [BUG] Page allocation failures with newest kernels Marcin Wojtas <mw@semihalf.com> - 2016-06-02 21:10 +0200
                Re: [BUG] Page allocation failures with newest kernels Mel Gorman <mgorman@techsingularity.net> - 2016-06-03 12:00 +0200
                Re: [BUG] Page allocation failures with newest kernels Marcin Wojtas <mw@semihalf.com> - 2016-06-03 14:00 +0200
                Re: [BUG] Page allocation failures with newest kernels Mel Gorman <mgorman@techsingularity.net> - 2016-06-03 14:40 +0200
                Re: [BUG] Page allocation failures with newest kernels Marcin Wojtas <mw@semihalf.com> - 2016-06-07 19:40 +0200
                Re: [BUG] Page allocation failures with newest kernels Mel Gorman <mgorman@techsingularity.net> - 2016-06-08 12:20 +0200
                Re: [BUG] Page allocation failures with newest kernels Marcin Wojtas <mw@semihalf.com> - 2016-06-09 20:20 +0200
                Re: [BUG] Page allocation failures with newest kernels Marcin Wojtas <mw@semihalf.com> - 2016-06-10 18:10 +0200

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