Re: [RFC PATCH v3 4/7] powerpc: regain entire stack space

[Christophe LEROY]

Le 03/10/2018 Ã 07:34, Nicholas Piggin a ÃcritÂ:
> On Mon,  1 Oct 2018 12:30:25 +0000 (UTC)
> Christophe Leroy <christophe.leroy@xxxxxx> wrote:
>
> > thread_info is not anymore in the stack, so the entire stack
> > can now be used.
>
> Nice.
>
> > In the meantime, all pointers to the stacks are not anymore
> > pointers to thread_info so this patch changes them to void*
>
> Wasn't this previously effectively already the case with patch
> 3/7? You had thread_info sized space left there, but it was not
> used or initialized right? Does it make sense to move this part
> of it to the previous patch?

Not really.

In 3/7 I changed the prototypes of two functions that really used the 
pointer as a task pointer only.

Here it change things that before 4/7 were really used as both stack 
pointers and thread_info pointers.

Christophe

> Thanks,
> Nick