linux-kernel - Re: [RFC PATCH v2 0/4] mm, memory_hotplug: allocate memmap from hotadded memory

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Message-ID: <20190212145021.2bf2gmgprcvzkuq4@d104.suse.de>
Date:   Tue, 12 Feb 2019 15:50:36 +0100
From:   Oscar Salvador <osalvador@...e.de>
To:     Michal Hocko <mhocko@...nel.org>
Cc:     Shameerali Kolothum Thodi <shameerali.kolothum.thodi@...wei.com>,
        Jonathan Cameron <jonathan.cameron@...wei.com>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "dan.j.williams@...el.com" <dan.j.williams@...el.com>,
        "Pavel.Tatashin@...rosoft.com" <Pavel.Tatashin@...rosoft.com>,
        "david@...hat.com" <david@...hat.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "dave.hansen@...el.com" <dave.hansen@...el.com>,
        Linuxarm <linuxarm@...wei.com>,
        Robin Murphy <robin.murphy@....com>
Subject: Re: [RFC PATCH v2 0/4] mm, memory_hotplug: allocate memmap from
 hotadded memory

On Tue, Feb 12, 2019 at 03:42:42PM +0100, Michal Hocko wrote:
> Please make sure to test on a larger machine which has multi section
> memblocks. This is where I was hitting on bugs hard.

I tested the patchset with large memblocks (2GB) on x86_64, and worked
fine as well.
On powerpc I was only able to test it on normal memblocks, but I will check
if I can boost the memory there to get large memblocks.

And about arm64, I will talk to Jonathan off-list to see if we can do the same.

Btw, in the meantime, we could get some parts reviewed perhaps.
-- 
Oscar Salvador
SUSE L3