netdev - Re: [PATCH 2/3 net-next] bnx2: Add missing memory barrier in bnx2_start

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:	Sun, 05 Feb 2012 22:46:44 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	mchan@...adcom.com
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH 2/3 net-next] bnx2: Add missing memory barrier in
 bnx2_start_xmit()

From: "Michael Chan" <mchan@...adcom.com>
Date: Sun, 5 Feb 2012 17:24:39 -0800

> From: Vlad Zolotarov <vlad@...lemp.com>
> 
> Sync DMA descriptor before hitting the TX mailbox for weak memory model
> CPUs.
> 
> There has been discussions several years ago about this.  Some believe
> that writel() should guarantee ordering.  Others want explicit barriers
> if necessary.  Today writel() does not have the ordering guarantee and
> many other drivers use explicit barriers.
> 
> Signed-off-by: Vlad Zolotarov <vlad@...lemp.com>
> Signed-off-by: Michael Chan <mchan@...adcom.com>

Applied.
--
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