From: Arjan van de Ven <arjan@infradead.org>
To: "Larry H." <research@subreption.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>, Ingo Molnar <mingo@elte.hu>,
Rik van Riel <riel@redhat.com>,
linux-kernel@vger.kernel.org, Linus Torvalds <torvalds@osdl.org>,
linux-mm@kvack.org, Ingo Molnar <mingo@redhat.com>,
pageexec@freemail.hu
Subject: Re: [PATCH] Support for unconditional page sanitization
Date: Sat, 23 May 2009 14:05:09 -0700 [thread overview]
Message-ID: <20090523140509.5b4a59e4@infradead.org> (raw)
In-Reply-To: <20090523182141.GK13971@oblivion.subreption.com>
On Sat, 23 May 2009 11:21:41 -0700
"Larry H." <research@subreption.com> wrote:
> +static inline void sanitize_highpage(struct page *page)
any reason we're not reusing clear_highpage() for this?
(I know it's currently slightly different, but that is fixable)
also, have you checked that you stopped clearing the page in the
normal anonymous memory pagefault handler path? If the page is
guaranteed to be clear already you can save that copy
(basically you move the clear from allocate to free..)
--
Arjan van de Ven Intel Open Source Technology Centre
For development, discussion and tips for power savings,
visit http://www.lesswatts.org
next prev parent reply other threads:[~2009-05-23 21:05 UTC|newest]
Thread overview: 104+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-20 18:30 [patch 0/5] Support for sanitization flag in low-level page allocator Larry H.
2009-05-20 20:42 ` Peter Zijlstra
2009-05-20 21:24 ` Larry H.
2009-05-21 15:21 ` Robin Holt
2009-05-21 18:43 ` Larry H.
2009-05-29 22:58 ` Andrew Morton
2009-05-30 7:12 ` Pekka Enberg
2009-05-30 7:35 ` Larry H.
2009-05-30 7:39 ` Pekka Enberg
2009-05-21 19:08 ` Rik van Riel
2009-05-21 19:26 ` Alan Cox
2009-05-21 19:56 ` Larry H.
2009-05-21 20:47 ` Alan Cox
[not found] ` <20090521214638.GL10756@oblivion.subreption.com>
2009-05-21 22:47 ` Alan Cox
2009-05-22 11:22 ` Larry H.
2009-05-22 13:37 ` Alan Cox
2009-05-26 19:02 ` Pavel Machek
[not found] ` <4A15A8C7.2030505@redhat.com>
[not found] ` <20090522073436.GA3612@elte.hu>
2009-05-22 11:38 ` Larry H.
2009-05-22 13:39 ` Alan Cox
2009-05-22 18:03 ` Larry H.
2009-05-22 18:21 ` Alan Cox
[not found] ` <20090522234031.GH13971@oblivion.subreption.com>
2009-05-23 8:09 ` Alan Cox
2009-05-23 15:56 ` Arjan van de Ven
2009-05-23 18:21 ` [PATCH] Support for unconditional page sanitization Larry H.
2009-05-23 21:05 ` Arjan van de Ven [this message]
2009-05-24 10:19 ` pageexec
2009-05-24 16:38 ` Arjan van de Ven
2009-05-28 19:36 ` [patch 0/5] Support for sanitization flag in low-level page allocator Peter Zijlstra
2009-05-29 14:32 ` Arjan van de Ven
2009-05-30 5:48 ` Larry H.
2009-05-30 10:39 ` Peter Zijlstra
2009-05-30 10:43 ` Larry H.
2009-05-30 11:42 ` pageexec
2009-05-30 13:21 ` Peter Zijlstra
2009-05-30 13:24 ` Peter Zijlstra
2009-05-30 13:54 ` pageexec
2009-05-30 14:04 ` Larry H.
2009-05-30 14:13 ` Rik van Riel
2009-05-30 14:08 ` Rik van Riel
[not found] ` <20090530153023.45600fd2@lxorguk.ukuu.org.uk>
2009-05-30 14:45 ` Peter Zijlstra
2009-05-30 14:48 ` Rik van Riel
2009-05-30 17:00 ` Larry H.
2009-05-30 17:25 ` Larry H.
2009-05-30 18:32 ` Ingo Molnar
2009-05-31 14:38 ` Arjan van de Ven
2009-05-31 15:03 ` Arjan van de Ven
2009-05-22 18:37 ` Nai Xia
2009-05-22 19:18 ` Nai Xia
2009-05-23 12:49 ` Ingo Molnar
2009-05-23 22:28 ` Larry H.
2009-05-23 22:42 ` Rik van Riel
2009-05-25 1:17 ` [PATCH] Sanitize memory on kfree() and kmem_cache_free() Larry H.
2009-05-27 22:34 ` [patch 0/5] Support for sanitization flag in low-level page allocator Ingo Molnar
2009-05-28 6:27 ` Alan Cox
2009-05-28 7:00 ` Larry H.
2009-05-28 9:08 ` Ingo Molnar
2009-05-28 11:50 ` Alan Cox
2009-05-28 19:44 ` Peter Zijlstra
2009-05-30 7:35 ` Pekka Enberg
2009-05-30 7:50 ` Larry H.
2009-05-30 7:53 ` Pekka Enberg
2009-05-30 8:20 ` Larry H.
2009-05-30 8:33 ` Pekka Enberg
2009-05-30 15:05 ` Ray Lee
2009-05-30 17:34 ` Ingo Molnar
2009-05-30 18:03 ` Larry H.
2009-05-30 18:21 ` Ingo Molnar
2009-05-30 18:45 ` Larry H.
2009-05-30 19:08 ` Ingo Molnar
2009-05-30 20:39 ` Rik van Riel
2009-05-30 20:53 ` Pekka Enberg
2009-05-30 21:33 ` Larry H.
2009-05-30 23:13 ` Alan Cox
2009-05-30 23:18 ` Larry H.
2009-05-31 6:30 ` Pekka Enberg
2009-05-31 11:49 ` Larry H.
2009-05-31 7:17 ` Pekka Enberg
2009-05-31 11:58 ` Larry H.
2009-05-31 12:16 ` Pekka Enberg
2009-05-31 12:30 ` Larry H.
2009-05-31 12:35 ` Pekka Enberg
2009-05-30 23:10 ` Alan Cox
2009-05-31 6:14 ` Pekka Enberg
2009-05-31 10:24 ` Alan Cox
2009-05-31 10:24 ` Pekka Enberg
2009-05-31 12:16 ` Larry H.
2009-05-31 12:19 ` Pekka Enberg
2009-05-31 16:25 ` Alan Cox
2009-05-30 22:10 ` Ingo Molnar
2009-05-30 23:15 ` Alan Cox
2009-05-30 20:22 ` Pekka Enberg
2009-05-30 22:14 ` Ingo Molnar
2009-05-30 17:39 ` Ingo Molnar
2009-05-30 7:57 ` Pekka Enberg
2009-05-30 9:05 ` Larry H.
2009-05-30 17:46 ` Ingo Molnar
2009-05-30 18:09 ` Larry H.
2009-05-30 8:31 ` Alan Cox
2009-05-30 8:35 ` Pekka Enberg
2009-05-30 9:27 ` Larry H.
2009-05-28 18:48 ` pageexec
2009-05-30 17:50 ` Ingo Molnar
2009-05-28 12:48 ` Pavel Machek
2009-05-28 12:55 ` Larry H.
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