lkml.org 
[lkml]   [2015]   [Mar]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH 14/22] parisc: %pF is only for function pointers
From
Date
On Thu, 2015-03-12 at 11:14 -0500, Scott Wood wrote:
> On Thu, 2015-03-12 at 08:11 -0400, James Bottomley wrote:
> > On Wed, 2015-03-11 at 22:13 -0500, Scott Wood wrote:
> > > Use %pS for actual addresses, otherwise you'll get bad output
> > > on arches like ppc64 where %pF expects a function descriptor. Even on
> > > other architectures, refrain from setting a bad example that people
> > > copy.
> >
> > Are you sure about this? Parisc64 is a function description
> > architecture. There may be a misunderstanding about what
> > __builtin_return_address(0) is supposed to return, but I'm certain the
> > person who added the code thought it returned a function pointer, which
> > on parisc64 would be a descriptor.
>
> I wasn't aware that parisc64 used descriptors, but I don't see how you'd
> get one out of __builtin_return_address(0) since it's not usually a
> function entry point (plus, GCC documents it as returning void *).

I was more thinking that this message is printed for every boot with a
superio chip (which is a lot of our boxes). How come no-one has
complained on parisc64 if it's doing the wrong thing.

James




\
 
 \ /
  Last update: 2015-03-12 19:21    [W:0.169 / U:2.124 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site