On Wed, 21 Feb 2007, Davide Libenzi wrote:
> >
> > We can't trust user pointers, and that includes not trusting them being
> > aligned.
>
> Don't we get EFAULT in case of exception (access or alignment) in there?
> For "dealing with", here we'd need them to do the correct thing
> (split-load?) in case of mis-aligned access.
I sure hope no architecture does that. EFAULT should be for *unmapped*
accesses, not from users just using unaligned pointers.
I would argue that it is a bug if some architecture thinks that
"get_user()" and "put_user()" don't do unaligned accesses.
(Not to say that it might not be something some odd architecture *does*,
but I'd be disappointed if somebody did)
Linus
-
To unsubscribe from this list: send the line "unsubscribe linux-arch" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
