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From:   Alexander Duyck <alexander.duyck@gmail.com>
Date:   Mon, 10 Sep 2018 17:35:34 -0700
Message-ID: <CAKgT0UcP4G-Y8ad2yGh_kGSSD4ry-Z+FtZ+6wwFzUS3YkpeFyg@mail.gmail.com>
Subject: Re: [PATCH 1/4] mm: Provide kernel parameter to allow disabling page
 init poisoning
To:     linux-mm <linux-mm@kvack.org>, LKML <linux-kernel@vger.kernel.org>,
        linux-nvdimm@lists.01.org
Cc:     pavel.tatashin@microsoft.com, Michal Hocko <mhocko@suse.com>,
        dave.jiang@intel.com, Ingo Molnar <mingo@kernel.org>,
        Dave Hansen <dave.hansen@intel.com>, jglisse@redhat.com,
        Andrew Morton <akpm@linux-foundation.org>, logang@deltatee.com,
        dan.j.williams@intel.com,
        "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
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On Mon, Sep 10, 2018 at 4:43 PM Alexander Duyck
<alexander.duyck@gmail.com> wrote:
>
> From: Alexander Duyck <alexander.h.duyck@intel.com>
>
> On systems with a large amount of memory it can take a significant amount
> of time to initialize all of the page structs with the PAGE_POISON_PATTERN
> value. I have seen it take over 2 minutes to initialize a system with
> over 12GB of RAM.

Minor typo. I meant 12TB here, not 12GB.

- Alex