linux-kernel - Re: [PATCH 4.9 00/42] 4.9.188-stable review

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Date:   Mon, 05 Aug 2019 23:11:01 +0300
From:   Jari Ruusu <jariruusu@...rs.sourceforge.net>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:     linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org,
        akpm@...ux-foundation.org, linux@...ck-us.net, shuah@...nel.org,
        patches@...nelci.org, ben.hutchings@...ethink.co.uk,
        lkft-triage@...ts.linaro.org, stable@...r.kernel.org,
        Peter Zijlstra <peterz@...radead.org>
Subject: Re: [PATCH 4.9 00/42] 4.9.188-stable review

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