linux-kernel - Re: [PATCH v3 1/2] cxl: Add mechanism for delivering AFU driver specific events

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]

Message-Id: <1457573125-sup-1934@delenn.ozlabs.ibm.com>
Date:	Thu, 10 Mar 2016 12:26:22 +1100
From:	Ian Munsie <imunsie@....ibm.com>
To:	Frederic Barrat <fbarrat@...ux.vnet.ibm.com>
Cc:	Michael Ellerman <michaele@....ibm.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Matt Ochs <mrochs@...ibm.com>,
	Manoj Kumar <kumarmn@...ibm.com>,
	linuxppc-dev <linuxppc-dev@...abs.org>,
	Michael Neuling <mikey@...ling.org>
Subject: Re: [PATCH v3 1/2] cxl: Add mechanism for delivering AFU driver specific events

Excerpts from Frederic Barrat's message of 2016-03-09 20:27:20 +1100:
> It would also avoid entering
>         WARN(1, "afu_read must be buggy\n");
> if the driver changes its mind between the 2 calls :-)

Honestly, it had better not - that would be a gross violation of the
poll & read semantics and the kind of thing that leads to application
hangs.

Cheers,
-Ian