lkml.org 
[lkml]   [2020]   [Apr]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 4/7] objtool: Add support for return trampoline call
On Sat, Apr 04, 2020 at 03:32:18PM +0200, Peter Zijlstra wrote:
> On Fri, Apr 03, 2020 at 05:46:20PM +0200, Peter Zijlstra wrote:
> > On Fri, Apr 03, 2020 at 10:17:57AM -0500, Josh Poimboeuf wrote:
> > > Peter, I think my previous idea for UNWIND_HINT_ADJUST stack_add=8 would
> > > work here?
> >
> > Yes, it would.
>
> Sorry, I have reconsidered. While it will shut up objtool, it will not
> 'work'. That is, the ORC data generated will not correctly unwind.
>
> I'll try and write a longer email tonight.

Right, that's what I've been trying to say. The ORC data will be
non-deterministic unless we unroll the loop. Or did you mean something
else?

--
Josh

\
 
 \ /
  Last update: 2020-04-04 16:22    [W:0.105 / U:1.660 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site