Re: PR/49816 CVS commit: src/libexec/ld.elf_so

[Joerg Sonnenberger <joerg%britannica.bec.de@localhost>]

The following reply was made to PR lib/49816; it has been noted by GNATS.

From: Joerg Sonnenberger <joerg%britannica.bec.de@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: PR/49816 CVS commit: src/libexec/ld.elf_so
Date: Mon, 6 Apr 2015 13:33:30 +0200

 On Mon, Apr 06, 2015 at 09:35:00AM +0000, YAMAMOTO Takashi wrote:
 >  Log Message:
 >  Fix membars around rtld internal mutex.
 >  
 >  This fixes the most of lockups i observed with Open vSwitch
 >  on NetBSD/amd64.  ("most of" because it still occasionally
 >  locks up because of other problems.  see PR/49816)
 
 None of those should matter on amd64? CAS has an implicit total memory
 barrier, so this seems to just add a lot of overhead for no reason.
 
 Joerg