From: "H. Peter Anvin" <hpa@zytor.com>
To: Yinghai Lu <yinghai@kernel.org>
Cc: Mike Travis <travis@sgi.com>,
Greg KH <gregkh@linuxfoundation.org>,
Nathan Zimmer <nzimmer@sgi.com>, Robin Holt <holt@sgi.com>,
Rob Landley <rob@landley.net>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
the arch/x86 maintainers <x86@kernel.org>,
linux-doc@vger.kernel.org,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [RFC 0/2] Delay initializing of large sections of memory
Date: Tue, 25 Jun 2013 11:44:51 -0700 [thread overview]
Message-ID: <51C9E523.7000803@zytor.com> (raw)
In-Reply-To: <CAE9FiQV5z+3AXy5c=aaU3vq1V3fibJ6PhhA4VW5H8BWVzhxXPA@mail.gmail.com>
On 06/25/2013 11:40 AM, Yinghai Lu wrote:
> On Tue, Jun 25, 2013 at 11:17 AM, H. Peter Anvin <hpa@zytor.com> wrote:
>> On 06/25/2013 10:35 AM, Mike Travis wrote:
>
>> However, please consider Ingo's counterproposal of doing this via the
>> buddy allocator, i.e. hugepages being broken on demand. That is a
>> *very* powerful model, although would require more infrastructure.
>
> Can you or Ingo elaborate more about the buddy allocator proposal?
>
Start by initializing 1G hyperpages only, but mark them so that the
allocator knows that if it needs to break them apart it has to
initialize the page structures for the 2M subpages.
Same thing with 2M -> 4K.
-hpa
next prev parent reply other threads:[~2013-06-25 18:45 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-21 16:25 [RFC 0/2] Delay initializing of large sections of memory Nathan Zimmer
2013-06-21 16:25 ` [RFC 1/2] x86_64, mm: Delay initializing large portion " Nathan Zimmer
2013-06-25 4:14 ` Rob Landley
2013-06-21 16:25 ` [RFC 2/2] x86_64, mm: Reinsert the absent memory Nathan Zimmer
2013-06-23 9:28 ` Ingo Molnar
2013-06-23 9:32 ` Ingo Molnar
2013-06-24 17:38 ` H. Peter Anvin
2013-06-24 19:39 ` Ingo Molnar
2013-06-24 20:08 ` H. Peter Anvin
2013-06-25 7:31 ` Ingo Molnar
2013-06-24 20:36 ` Nathan Zimmer
2013-06-25 7:38 ` Ingo Molnar
2013-06-25 15:07 ` H. Peter Anvin
2013-06-25 17:19 ` Mike Travis
2013-06-25 17:22 ` Mike Travis
2013-06-25 18:43 ` H. Peter Anvin
2013-06-25 18:51 ` Mike Travis
2013-06-26 9:22 ` [RFC] Transparent on-demand memory setup initialization embedded in the (GFP) buddy allocator Ingo Molnar
2013-06-26 13:28 ` Andrew Morton
2013-06-26 13:37 ` Ingo Molnar
2013-06-26 15:02 ` Nathan Zimmer
2013-06-26 16:15 ` Mike Travis
2013-06-26 12:14 ` [RFC 2/2] x86_64, mm: Reinsert the absent memory Ingo Molnar
2013-06-26 14:49 ` Nathan Zimmer
2013-06-26 15:12 ` Dave Hansen
2013-06-26 15:20 ` Nathan Zimmer
2013-06-26 15:58 ` Ingo Molnar
2013-06-26 16:11 ` Nathan Zimmer
2013-06-26 16:07 ` Mike Travis
2013-06-21 16:51 ` [RFC 0/2] Delay initializing of large sections of memory Greg KH
2013-06-21 17:03 ` H. Peter Anvin
2013-06-21 17:18 ` Nathan Zimmer
2013-06-21 17:28 ` H. Peter Anvin
2013-06-21 20:05 ` Nathan Zimmer
2013-06-21 20:08 ` H. Peter Anvin
2013-06-21 20:33 ` Nathan Zimmer
2013-06-21 21:36 ` Mike Travis
2013-06-21 21:07 ` Mike Travis
2013-06-21 18:44 ` Yinghai Lu
2013-06-21 18:50 ` Greg KH
2013-06-21 19:10 ` Yinghai Lu
2013-06-21 19:19 ` Nathan Zimmer
2013-06-21 20:28 ` Yinghai Lu
2013-06-21 20:40 ` Nathan Zimmer
2013-06-21 21:30 ` Mike Travis
2013-06-22 0:23 ` Yinghai Lu
2013-06-25 17:35 ` Mike Travis
2013-06-25 18:17 ` H. Peter Anvin
2013-06-25 18:40 ` Mike Travis
2013-06-25 18:40 ` Yinghai Lu
2013-06-25 18:44 ` H. Peter Anvin [this message]
2013-06-25 18:58 ` Mike Travis
2013-06-25 19:03 ` Yinghai Lu
2013-06-25 19:09 ` H. Peter Anvin
2013-06-25 19:28 ` Yinghai Lu
2013-06-27 6:37 ` Yinghai Lu
2013-06-27 11:05 ` Robin Holt
2013-06-27 15:50 ` Mike Travis
2013-06-26 9:23 ` Ingo Molnar
2013-06-25 18:38 ` Yinghai Lu
2013-06-25 18:42 ` Mike Travis
2013-06-21 18:36 ` Yinghai Lu
2013-06-21 18:44 ` Greg Kroah-Hartman
2013-06-21 19:00 ` Yinghai Lu
2013-06-21 21:28 ` Mike Travis
2013-06-21 21:19 ` Mike Travis
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=51C9E523.7000803@zytor.com \
--to=hpa@zytor.com \
--cc=akpm@linux-foundation.org \
--cc=gregkh@linuxfoundation.org \
--cc=holt@sgi.com \
--cc=linux-doc@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=nzimmer@sgi.com \
--cc=rob@landley.net \
--cc=tglx@linutronix.de \
--cc=travis@sgi.com \
--cc=x86@kernel.org \
--cc=yinghai@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.