netdev - Re: [PATCH net 1/1] qed: Protect the doorbell BAR with the write barriers.

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] [day] [month] [year] [list]

Message-Id: <20160629.081618.2206817138199595643.davem@davemloft.net>
Date:	Wed, 29 Jun 2016 08:16:18 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	sudarsana.kalluru@...gic.com
Cc:	netdev@...r.kernel.org, Yuval.Mintz@...gic.com
Subject: Re: [PATCH net 1/1] qed: Protect the doorbell BAR with the write
 barriers.

From: Sudarsana Reddy Kalluru <sudarsana.kalluru@...gic.com>
Date: Tue, 28 Jun 2016 07:46:03 -0400

> SPQ doorbell is currently protected with the compilation barrier. Under the
> stress scenarios, we may get into a state where (due to the weak ordering)
> several ramrod doorbells were written to the BAR with an out-of-order
> producer values. Need to change the barrier type to a write barrier to make
> sure that the write buffer is flushed after each doorbell.
> 
> Signed-off-by: Sudarsana Reddy Kalluru <sudarsana.kalluru@...gic.com>

Applied.