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References: <20180927194601.207765-1-wonderfly@google.com> <20181001152324.72a20bea@gandalf.local.home>
 <20181001201309.GA9835@amd> <85b9ab27-ec57-647b-4c92-1afb9b595a2a@suse.cz>
In-Reply-To: <85b9ab27-ec57-647b-4c92-1afb9b595a2a@suse.cz>
From:   Daniel Wang <wonderfly@google.com>
Date:   Mon, 1 Oct 2018 13:38:49 -0700
Message-ID: <CAJmjG29JTboAWTzyEiix-aA-2NvkwAOEygKAwq3pB18RO+Etfg@mail.gmail.com>
Subject: Re: 4.14 backport request for dbdda842fe96f: "printk: Add console
 owner and waiter logic to load balance console writes"
To:     vbabka@suse.cz
Cc:     pavel@ucw.cz, rostedt@goodmis.org, stable@vger.kernel.org,
        pmladek@suse.com, Alexander.Levin@microsoft.com,
        akpm@linux-foundation.org, byungchul.park@lge.com,
        dave.hansen@intel.com, hannes@cmpxchg.org, jack@suse.cz,
        linux-kernel@vger.kernel.org, linux-mm@kvack.org,
        mathieu.desnoyers@efficios.com, mgorman@suse.de, mhocko@kernel.org,
        penguin-kernel@i-love.sakura.ne.jp, peterz@infradead.org,
        tj@kernel.org, torvalds@linux-foundation.org,
        xiyou.wangcong@gmail.com, Peter Feiner <pfeiner@google.com>
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On Mon, Oct 1, 2018 at 1:23 PM Vlastimil Babka <vbabka@suse.cz> wrote:
>
> On 10/1/18 10:13 PM, Pavel Machek wrote:
> >
> > Dunno. Is the patch perhaps a bit too complex? This is not exactly
> > trivial bugfix.
> >
> > pavel@duo:/data/l/clean-cg$ git show dbdda842fe96f | diffstat
> >  printk.c |  108
> >  ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
> >
> > I see that it is pretty critical to Daniel, but maybe kernel with
> > console locking redone should no longer be called 4.4?
>
> In that case it probably should no longer be called 4.4 since at least
> Meltdown/Spectre fixes :)

To clarify, I am requesting a backport to 4.14. This bug doesn't repro on 4.4.

>


-- 
Best,
Daniel

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