From: ccross@google.com (Colin Cross)
To: linux-arm-kernel@lists.infradead.org
Subject: since when does ARM map the kernel memory in sections?
Date: Tue, 12 Apr 2011 12:11:59 -0700 [thread overview]
Message-ID: <BANLkTintPVJoJCyRJCX9f2j8KD5BPgrXrA@mail.gmail.com> (raw)
In-Reply-To: <201104122052.17453.pwaechtler@mac.com>
On Tue, Apr 12, 2011 at 11:52 AM, Peter W?chtler <pwaechtler@mac.com> wrote:
> Hello Linux ARM developers,
>
> did the ARM Linux 2.6 kernel map the kernel memory in pages in the past?
> Or was the memory always mapped in sections?
>
> I still have to chase a potential memory corruption. The rootfs is located on
> a SDcard and gets corrupted even when the filesystem test programs write to
> different partitions.
> The test scenario includes several dozen or even hundreds of warm and cold
> boot sequences, file system write tests with sudden soft resets. It's a large
> embedded project with a lot of drivers and the fact that always the rootfs and
> often the superblock gets damaged let me think of a memory corruption.
Gary King posted some patches a while ago that switched the kernel
back to page mappings, so he could modify attributes on some pages to
be non-cacheable. The patches were not accepted, but you can probably
dig them up for testing.
next prev parent reply other threads:[~2011-04-12 19:11 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-12 18:52 since when does ARM map the kernel memory in sections? Peter Wächtler
2011-04-12 19:11 ` Colin Cross [this message]
2011-04-13 18:19 ` Peter Wächtler
2011-04-12 19:20 ` Andrei Warkentin
2011-04-12 20:33 ` Jamie Lokier
2011-04-13 15:27 ` Nicolas Pitre
2011-04-13 20:11 ` Jamie Lokier
2011-04-18 13:52 ` Pavel Machek
2011-04-18 17:07 ` Jamie Lokier
2011-04-18 17:17 ` Nicolas Pitre
2011-04-22 15:47 ` Pavel Machek
2011-04-23 9:23 ` Linus Walleij
2011-04-26 10:33 ` Per Forlin
2011-04-26 19:00 ` Peter Waechtler
2011-04-26 19:07 ` Jamie Lokier
2011-04-26 20:38 ` MMC and reliable write - was: " Peter Waechtler
2011-04-26 22:45 ` Jamie Lokier
2011-04-27 1:13 ` Andrei Warkentin
2011-04-27 13:07 ` Jamie Lokier
2011-04-27 19:18 ` Andrei Warkentin
2011-04-27 19:33 ` Arnd Bergmann
2011-05-03 8:04 ` Jamie Lokier
2011-06-06 10:28 ` Pavel Machek
2011-06-06 20:38 ` Peter Waechtler
2011-04-26 20:24 ` Andrei Warkentin
2011-04-26 22:58 ` Jamie Lokier
2011-04-27 0:27 ` Andrei Warkentin
2011-04-27 13:19 ` Jamie Lokier
2011-04-27 13:32 ` Arnd Bergmann
2011-04-27 18:50 ` Peter Waechtler
2011-04-27 18:58 ` Andrei Warkentin
2011-04-18 19:21 ` Peter Waechtler
2011-04-18 17:24 ` Pavel Machek
2011-04-19 0:43 ` Jamie Lokier
2011-04-13 6:51 ` Peter Wächtler
2011-04-13 15:44 ` Nicolas Pitre
2011-04-13 18:35 ` Peter Wächtler
2011-04-12 20:15 ` Russell King - ARM Linux
-- strict thread matches above, loose matches on Subject: below --
2011-04-28 20:26 Peter Waechtler
2011-04-28 21:38 ` Andrei Warkentin
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