From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: mmaping a fixed address fails on ARM
Date: Thu, 13 Jan 2011 11:25:52 +0000 [thread overview]
Message-ID: <20110113112552.GA26828@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <AANLkTin0jjxLTWzkLHnJ+sGQz=jdDDL94R9o1gh-rO9P@mail.gmail.com>
On Thu, Jan 13, 2011 at 05:58:01AM +0800, Bryan Wu wrote:
> The implementation of arch_get_unmapped_area() is different from ARM
> and x86, that might makes mmap behavior different between ARM and x86.
> Andre said 2.6.28-versatile. I'm not sure whether it is a regression.
For the same conditions (iow, same mapping) on ARMv7 and ARMv5-only
kernels vs x86 the results will be the same. On ARMv6-supporting kernels
we have aliasing caches to deal with where we intentionally force the
alignment of non-MAP_FIXED mappings.
next prev parent reply other threads:[~2011-01-13 11:25 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-12 21:58 mmaping a fixed address fails on ARM Bryan Wu
2011-01-12 22:05 ` Bryan Wu
2011-01-13 9:44 ` Mikael Pettersson
2011-01-13 22:31 ` Bryan Wu
2011-01-13 11:25 ` Russell King - ARM Linux [this message]
2011-01-13 22:34 ` Bryan Wu
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