lkml.org 
[lkml]   [2012]   [Dec]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [Alternative][PATCH] ACPI / PCI: Set root bridge ACPI handle in advance
From
On Wed, Dec 26, 2012 at 12:16 PM, Yinghai Lu <yinghai@kernel.org> wrote:
> On Wed, Dec 26, 2012 at 12:10 PM, Bjorn Helgaas <bhelgaas@google.com> wrote:
>> Do you have a reference for this? I think this might have been true
>> in the past, but I don't think it's true for any version of gcc we
>> support for building Linux.
>
> http://lkml.indiana.edu/hypermail/linux/kernel/0804.3/3600.html

the problem is already addressed by:

| commit f9d14250071eda9972e4c9cea745a11185952114
| Author: Linus Torvalds <torvalds@linux-foundation.org>
| Date: Fri Jan 2 09:29:43 2009 -0800
|
| Disallow gcc versions 4.1.{0,1}
|
| These compiler versions are known to miscompile __weak functions and
| thus generate kernels that don't necessarily work correctly. If a weak
| function is int he same compilation unit as a caller, gcc may end up
| inlining it, and thus binding the weak function too early.
|
| See
|
| http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27781
|
| for details.

so it is ok to put the __weak in the same file now.

Yinghai


\
 
 \ /
  Last update: 2012-12-26 22:21    [W:0.160 / U:0.236 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site