[PATCH] ARM: ptrace: fix ptrace_read_user for !CONFIG_MMU platforms

[Will Deacon]

On Tue, Feb 21, 2012 at 11:35:48AM +0000, Russell King - ARM Linux wrote:
> The other thing is, as this has been broken right from the start, has
> gdb under uclinux even been tested?

I checked with the tools guys here and they don't yet do !MMU testing,
although I think it's on the list.

> I don't think fixing this in mainline until we know the full story behind
> this is the right thing to be doing.  There's no point fixing a feature
> which no one's using.

Understood. Paul - would you please be able to confirm that:

(a) GDB is currently broken on uclinux? (it certainly looks that way)
(b) My proposed patch fixes the problem?

If you don't have an environment set up, I wonder if there's somebody else
we can poke who's playing with this stuff.

Will