[1/2] powerpc/ptrace: Fix enforcement of DAWR contraints

[Michael Ellerman]

On Thu, 2018-05-17 at 05:37:14 UTC, Michael Neuling wrote:
> Back when we first introduced the DAWR in this commit:
>   4ae7ebe952 powerpc: Change hardware breakpoint to allow longer ranges
> 
> We screwed up the constraint making it a 1024 byte boundary rather
> than a 512. This makes the check overly permissive. Fortunately GDB is
> the only real user and it always did they right thing, so we never
> noticed.
> 
> This fixes the constraint to 512 bytes.
> 
> Signed-off-by: Michael Neuling <mikey at neuling.org>
> cc: <stable at vger.kernel.org> # v3.9+

Series applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/cd6ef7eebf171bfcba7dc2df719c2a

cheers