Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Date:   Mon, 23 Jul 2018 13:09:28 +0200
From:   Michal Hocko <mhocko@kernel.org>
To:     Dave Hansen <dave.hansen@intel.com>
Cc:     Dan Williams <dan.j.williams@intel.com>, pasha.tatashin@oracle.com,
        dalias@libc.org, Jan Kara <jack@suse.cz>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Heiko Carstens <heiko.carstens@de.ibm.com>,
        linux-mm <linux-mm@kvack.org>, Paul Mackerras <paulus@samba.org>,
        "H. Peter Anvin" <hpa@zytor.com>,
        Yoshinori Sato <ysato@users.sourceforge.jp>,
        "linux-nvdimm@lists.01.org" <linux-nvdimm@lists.01.org>,
        the arch/x86 maintainers <x86@kernel.org>,
        Matthew Wilcox <willy@infradead.org>,
        daniel.m.jordan@oracle.com, Ingo Molnar <mingo@redhat.com>,
        fenghua.yu@intel.com, Jerome Glisse <jglisse@redhat.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        "Luck, Tony" <tony.luck@intel.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Michael Ellerman <mpe@ellerman.id.au>,
        Martin Schwidefsky <schwidefsky@de.ibm.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH v2 00/14] mm: Asynchronous + multithreaded memmap init
 for ZONE_DEVICE
Message-ID: <20180723110928.GC31229@dhcp22.suse.cz>
References: <153176041838.12695.3365448145295112857.stgit@dwillia2-desk3.amr.corp.intel.com>
 <CAGM2rea9AwQGaf1JiV_SDDKTKyP_n+dG9Z20gtTZEkuZPFnXFQ@mail.gmail.com>
 <CAPcyv4jo91jKjwn-M7cOhG=6vJ3c-QCyp0W+T+CtmiKGyZP1ng@mail.gmail.com>
 <CAGM2reacO1HF91yH8OR5w5AdZwPgwfSFfjDNBsHbP66v1rEg=g@mail.gmail.com>
 <20180717155006.GL7193@dhcp22.suse.cz>
 <CAA9_cmez_vrjBYvcpXT_5ziQ2CqRFzPbEWMO2kdmjW0rWhkaCA@mail.gmail.com>
 <20180718120529.GY7193@dhcp22.suse.cz>
 <3f43729d-fd4e-a488-e04d-026ef5a28dd9@intel.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <3f43729d-fd4e-a488-e04d-026ef5a28dd9@intel.com>
User-Agent: Mutt/1.10.0 (2018-05-17)
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Thu 19-07-18 11:41:10, Dave Hansen wrote:
> On 07/18/2018 05:05 AM, Michal Hocko wrote:
> > On Tue 17-07-18 10:32:32, Dan Williams wrote:
> >> On Tue, Jul 17, 2018 at 8:50 AM Michal Hocko <mhocko@kernel.org> wrote:
> > [...]
> >>> Is there any reason that this work has to target the next merge window?
> >>> The changelog is not really specific about that.
> >>
> >> Same reason as any other change in this space, hardware availability
> >> continues to increase. These patches are a direct response to end user
> >> reports of unacceptable init latency with current kernels.
> > 
> > Do you have any reference please?
> 
> Are you looking for the actual end-user reports?  This was more of a
> case of the customer plugging in some persistent memory DIMMs, noticing
> the boot delta and calling the folks who sold them the DIMMs (Intel).

But this doesn't sound like something to rush a solution for in the
upcoming merge windown, does it?

-- 
Michal Hocko
SUSE Labs