Re: [PATCH v2 00/14] mm: Asynchronous + multithreaded memmap init for ZONE_DEVICE

From: Michal Hocko
Date: Mon Jul 23 2018 - 07:09:35 EST


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@xxxxxxxxxx> 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