netdev - Re: [PATCH] ucc_geth: Rework the TX logic.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 30 Mar 2009 19:34:53 +0200
From:	Joakim Tjernlund <Joakim.Tjernlund@...nsmode.se>
To:	Scott Wood <scottwood@...escale.com>
Cc:	Li Yang <leoli@...escale.com>, linuxppc-dev@...abs.org,
	netdev@...r.kernel.org, pku.leo@...il.com
Subject: Re: [PATCH] ucc_geth: Rework the TX logic.

Scott Wood <scottwood@...escale.com> wrote on 30/03/2009 19:22:03:
> 
> Joakim Tjernlund wrote:
> > gianfar does not seem to use in_/out_ functions for the BDs. Works 
just
> > fine that too it seems.
> 
> It does now that it has explicit barriers in a few places.  Before they

In 2.6.29 or later?
 
> were added, it would sometimes fail under load.  That was due to a 
> compiler reordering, but CPU reordering was possible as well.

Does not the CPU skip reordering if the guarded bit is set?

Could we not use the same in ucc_geth as well? Then people would
not need to worry about "performance issues".

 Jocke
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html