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Message-ID: <5D488D55.B84FC098@users.sourceforge.net>
Date:   Mon, 05 Aug 2019 23:11:01 +0300
From:   Jari Ruusu <jariruusu@users.sourceforge.net>
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To:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CC:     linux-kernel@vger.kernel.org, torvalds@linux-foundation.org,
        akpm@linux-foundation.org, linux@roeck-us.net, shuah@kernel.org,
        patches@kernelci.org, ben.hutchings@codethink.co.uk,
        lkft-triage@lists.linaro.org, stable@vger.kernel.org,
        Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH 4.9 00/42] 4.9.188-stable review
References: <20190805124924.788666484@linuxfoundation.org>
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Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 4.9.188 release.

Peter Zijlstra's "x86/atomic: Fix smp_mb__{before,after}_atomic()"
upstream commit 69d927bba39517d0980462efc051875b7f4db185 seems to
be missing/lost from 4.9 and older stable kernels.

That patch has 10 hunks, first one of those does not apply cleanly to
4.9 kernel because it attempts to modify Documentation/atomic_t.txt
file which does not exist in older kernels. Other 9 hunks apply with
small offsets and fuzz, but modifications find their correct places anyway.
Those other 9 hunks are the important ones, first hunk can be ignored.

Greg,
Please take Peter Zijlstra's original patch and "force" apply it like this
to 4.9 kernels:

  patch -p1 -f <ORIGINAL.patch

and for 4.4 kernels like this:

  cat ORIGINAL.patch | sed -e 's/__smp_mb__/smp_mb__/' | patch -p1 -f -l

-- 
Jari Ruusu  4096R/8132F189 12D6 4C3A DCDA 0AA4 27BD  ACDF F073 3C80 8132 F189