netdev - Re: [Patch 1/2] IB/mlx5: Implementation of PCI error handler

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: <20140313160359.GB28066@mtldesk30>
Date:	Thu, 13 Mar 2014 18:03:59 +0200
From:	Eli Cohen <eli@....mellanox.co.il>
To:	Carol Soto <clsoto@...ux.vnet.ibm.com>
Cc:	Ben Hutchings <ben@...adent.org.uk>, eli@...lanox.com,
	roland@...nel.org, sean.hefty@...el.com, hal.rosenstock@...il.com,
	linux-rdma@...r.kernel.org, netdev@...r.kernel.org,
	brking@...ux.vnet.ibm.com
Subject: Re: [Patch 1/2] IB/mlx5: Implementation of PCI error handler

On Thu, Mar 13, 2014 at 10:51:46AM -0500, Carol Soto wrote:
> 
> The motivation to reduce that timeout is that if there is a process
> in the middle of a HW command
> in the middle of the PCI error, I probably did not want to wait 2hrs
> since the command will never complete
> since the card is dead. Now you are right, I forgot the case of big
> memory registration where commands can
> take longer than that. Do you have an idea of what is the longest
> time that a command can take in mlx5?
>

There is no guranteed time for command completions. With current
driver/firmware, registration of 4.5 GB can take around 2 minutes; for
larger regions it can take even more time. As I mentioned earlier, I
will soon send a patch that reduces registation times for large
regions.
--
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