linux-kernel - Re: [RFC PATCH v2 0/1] FPGA subsystem core

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: <524F5442.20402@zytor.com>
Date:	Fri, 04 Oct 2013 16:50:26 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:	monstr@...str.eu, Pavel Machek <pavel@...x.de>,
	Michal Simek <michal.simek@...inx.com>,
	linux-kernel@...r.kernel.org, Alan Tull <atull@...era.com>,
	Dinh Nguyen <dinguyen@...era.com>,
	Philip Balister <philip@...ister.org>,
	Alessandro Rubini <rubini@...dd.com>,
	Steffen Trumtrar <s.trumtrar@...gutronix.de>,
	Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
	Jason Cooper <jason@...edaemon.net>,
	Yves Vandervennet <rocket.yvanderv@...il.com>,
	Kyle Teske <kyle.teske@...com>,
	Josh Cartwright <joshc@....teric.us>,
	Nicolas Pitre <nico@...aro.org>,
	Mark Langsdorf <mark.langsdorf@...xeda.com>,
	Felipe Balbi <balbi@...com>, linux-doc@...r.kernel.org,
	Mauro Carvalho Chehab <m.chehab@...sung.com>,
	David Brown <davidb@...eaurora.org>,
	Rob Landley <rob@...dley.net>,
	"David S. Miller" <davem@...emloft.net>,
	Joe Perches <joe@...ches.com>,
	Cesar Eduardo Barros <cesarb@...arb.net>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [RFC PATCH v2 0/1] FPGA subsystem core

On 10/04/2013 04:33 PM, Greg Kroah-Hartman wrote:
> 
> Ideally I thought this would be just like "firmware", you dump the file
> to the FPGA, it validates it and away you go with a new image running in
> the chip.
> 
> But, it sounds like this is much more complicated, so much so that
> configfs might be the correct interface for it, as you can do lots of
> things there, and it is very flexible (some say too flexible...)
> 
> A char device, with a zillion different custom ioctls is also a way to
> do it, but one that I really want to avoid as that gets messy really
> quickly.
> 

I'm not sure that a zillion custom ioctls are necessary, but I think we
really need to get a better understanding of the various usage cases
(and there are going to be ones where an "FPGA driver" simply makes no
sense at all.)

	-hpa


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/