linux-kernel - Re: [RFCv1 3/6] PASR: mm: Integrate PASR in Buddy allocator

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAOJsxLE_iby+-EGzqXDc9D=Db7mm1NDDqdHqN_a+mZAQfLBrFA@mail.gmail.com>
Date:	Tue, 31 Jan 2012 14:46:46 +0200
From:	Pekka Enberg <penberg@...nel.org>
To:	Maxime Coquelin <maxime.coquelin@...ricsson.com>
Cc:	Mel Gorman <mel@....ul.ie>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"linaro-mm-sig@...ts.linaro.org" <linaro-mm-sig@...ts.linaro.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Linus WALLEIJ <linus.walleij@...ricsson.com>,
	Andrea GALLO <andrea.gallo@...ricsson.com>,
	Vincent GUITTOT <vincent.guittot@...ricsson.com>,
	Philippe LANGLAIS <philippe.langlais@...ricsson.com>,
	Loic PALLARDY <loic.pallardy@...ricsson.com>
Subject: Re: [RFCv1 3/6] PASR: mm: Integrate PASR in Buddy allocator

On Mon, Jan 30, 2012 at 6:52 PM, Maxime Coquelin
<maxime.coquelin@...ricsson.com> wrote:
>> What is more likely is that you will get pushed to doing something like
>> periodically scanning memory as part of a separate power management
>> module and calling into PASR if regions of memory that are found that
>> can be powered down in some ways.
>
> With this solution, we need in any case to add some hooks in the allocator
> to ensure the pages being allocated are refreshed.

Why do you insist on making this happen at page level when you're only
able to power off *much* larger chunks?
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/