Re: [linuxsh-dev] Re: bad alignment fixup

[NIIBE Y. <gn...@ch...>]

Philipp Rumpf wrote:
 > I think we have four groups of accesses we might emulate or not:
 > 1. kernel accesses to kernel memory
 > 2. kernel accesses to user memory
 > 3. user accesses to user memory, using "standard" instructions
 > 4. user accesses to user memory, using non-standard instructions

Thanks for the summary.

My opinion is we only need #1.

 > We definitely need to emulate 1) - at least unless someone convinces the
 > network guys to drop that requirement.

Is there anyone try to use ISOFS?  Takashi Yoshii said there're plenty
of code which might cause unaligned access.

For #2, #3, and #4, it would be interesting problem to solve,
technically, to supports the feature.  However, when people (of user
space application) rely on such a feature, in the long run, bad
quality would remain forever.

At least, we should output warning message when handling userspace
unaligned access.
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