From: Mike Frysinger <vapier@gentoo.org>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] arm: armv7: add compile option -mno-unaligned-access if available
Date: Thu, 19 Jul 2012 00:29:23 -0400 [thread overview]
Message-ID: <201207190029.25734.vapier@gentoo.org> (raw)
In-Reply-To: <yw1xlij2ta1b.fsf@unicorn.mansr.com>
On Monday 02 July 2012 12:14:40 M?ns Rullg?rd wrote:
> It's slightly more complicated than that. Data can be misaligned for a
> variety of reasons:
>
> 1. Errors in software.
> 2. Specified by a file format or communication protocol.
> 3. Deliberately misaligned by the compiler.
>
> Misaligned data of type 1 should of course be fixed properly, not worked
> around in any way.
it's also a reliability aspect. people don't write bug free software, not bug
free protocols, nor bug free compilers. when misalignment does happen in the
field, it's a hell of a lot better if the software continued to execute
correctly rather than randomly triggered an exception.
-mike
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next prev parent reply other threads:[~2012-07-19 4:29 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-05 17:47 [U-Boot] [PATCH] arm: enable unaligned access on ARMv7 Lucas Stach
2012-06-05 18:42 ` Stephen Warren
2012-06-05 19:06 ` Lucas Stach
2012-06-22 9:15 ` Albert ARIBAUD
2012-06-22 9:36 ` Lucas Stach
2012-06-22 11:16 ` Albert ARIBAUD
2012-06-22 11:47 ` Lucas Stach
2012-06-22 22:11 ` Aneesh V
2012-06-22 22:13 ` Aneesh V
2012-06-23 9:01 ` Albert ARIBAUD
2012-06-23 17:43 ` V, Aneesh
2012-06-25 20:34 ` Albert ARIBAUD
2012-06-25 21:49 ` Aneesh V
2012-06-25 22:02 ` Wolfgang Denk
2012-06-23 19:50 ` Måns Rullgård
2012-06-24 6:30 ` Lucas Stach
[not found] ` <20120625221741.3a32790e@lilith>
2012-06-25 21:34 ` Lucas Stach
2012-06-26 20:56 ` Rob Herring
2012-06-27 10:14 ` Tetsuyuki Kobayashi
2012-07-02 9:42 ` [U-Boot] [PATCH] arm: armv7: add compile option -mno-unaligned-access if available Tetsuyuki Kobayashi
2012-07-02 9:53 ` Måns Rullgård
2012-07-02 15:16 ` Lucas Stach
2012-07-02 16:14 ` Måns Rullgård
2012-07-03 7:10 ` Tetsuyuki Kobayashi
2012-07-05 7:57 ` Albert ARIBAUD
2012-07-18 21:37 ` Albert ARIBAUD
2012-07-19 4:31 ` Mike Frysinger
2012-07-19 4:29 ` Mike Frysinger [this message]
2012-07-19 6:28 ` Albert ARIBAUD
2012-07-19 14:27 ` Mike Frysinger
2012-07-20 7:12 ` Albert ARIBAUD
2012-07-12 15:12 ` Gary Thomas
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