From: Pavel Machek <pavel@denx.de>
To: Rob Landley <rob@landley.net>
Cc: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>,
Pantelis Antoniou <pantelis.antoniou@konsulko.com>,
One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>,
atull <atull@opensource.altera.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
hpa@zytor.com, Michal Simek <monstr@monstr.eu>,
Michal Simek <michal.simek@xilinx.com>,
Randy Dunlap <rdunlap@infradead.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
devicetree@vger.kernel.org, robh+dt@kernel.org,
Grant Likely <grant.likely@linaro.org>,
iws@ovro.caltech.edu, linux-doc@vger.kernel.org,
Mark Brown <broonie@kernel.org>,
philip@balister.org, rubini@gnudd.com,
Steffen Trumtrar <s.trumtrar@pengutronix.de>,
jason@lakedaemon.net, kyle.teske@ni.com, nico@linaro.org,
Felipe Balbi <balbi@ti.com>,
m.chehab@samsung.com, davidb@codeaurora.org, davem@davemloft.net,
cesarb@cesarb.net, sameo@linux.intel.com, Andrew
Subject: Re: [PATCH v8 2/4] fpga manager: add sysfs interface document
Date: Tue, 17 Feb 2015 20:17:27 +0100 [thread overview]
Message-ID: <20150217191727.GA18429@amd> (raw)
In-Reply-To: <54E37569.80508@landley.net>
On Tue 2015-02-17 11:07:53, Rob Landley wrote:
>
>
> On 02/15/2015 04:40 PM, Pavel Machek wrote:
> > On Wed 2015-01-21 13:27:00, Jason Gunthorpe wrote:
> >> On Wed, Jan 21, 2015 at 06:33:12PM +0200, Pantelis Antoniou wrote:
> >> My point is that the current firmware layer is overly cautious and
> >> FPGAs are very big. My current project on small Xilinx device has a
> >> 10MB programming file. The biggest Xilinx device today has a max
> >> bitfile size around 122MB.
> >>
> >> So keeping that much memory pinned in the kernel when I can prove it
> >> is uncessary for my system (either because there is no suspend/resume
> >> possibility, or because I know the CPU can always access the
> >> filesytem) is very undesirable.
> >
> > Well, your current device aalso has 1GB RAM, no?
>
> Unnecessarily pinning 10% of your ram is a good solution?
Never said that. But I'd rather have _some_ API proposed, then try to
design in everthing including kitchen sink and do nothing.
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2015-02-17 19:17 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-06 20:13 [PATCH v8 0/4] FPGA Manager Framework atull
2015-01-06 20:13 ` [PATCH v8 1/4] doc: add bindings document for altera fpga manager atull
2015-01-06 22:05 ` Rob Herring
2015-01-06 22:34 ` atull
2015-01-09 15:50 ` Rob Herring
[not found] ` <CAL_Jsq+pn5MW6veUivEL49FLSQxZOWRq0gU9Q6iD5jzurKK3rQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-01-09 18:58 ` atull
2015-01-06 20:13 ` [PATCH v8 2/4] fpga manager: add sysfs interface document atull
2015-01-07 8:48 ` Pavel Machek
2015-01-09 19:14 ` atull
2015-01-09 20:56 ` Pavel Machek
2015-01-10 8:10 ` Pantelis Antoniou
2015-01-10 15:11 ` Pavel Machek
2015-01-11 16:29 ` atull
2015-01-12 8:45 ` Pavel Machek
2015-01-12 13:48 ` Michal Simek
2015-01-13 7:28 ` Pavel Machek
2015-01-13 7:40 ` Pantelis Antoniou
2015-01-13 7:56 ` Pavel Machek
2015-01-13 17:27 ` atull
2015-01-12 16:05 ` Rob Herring
2015-01-12 16:26 ` Mark Brown
2015-01-12 18:06 ` Jason Gunthorpe
2015-01-13 16:21 ` One Thousand Gnomes
2015-01-15 21:52 ` Pavel Machek
2015-01-12 21:01 ` One Thousand Gnomes
2015-01-12 21:43 ` Jason Gunthorpe
2015-01-13 16:28 ` One Thousand Gnomes
2015-01-13 17:26 ` Pantelis Antoniou
2015-01-13 19:44 ` atull
2015-01-14 15:58 ` One Thousand Gnomes
2015-01-13 20:00 ` Jason Gunthorpe
2015-01-13 21:37 ` atull
2015-01-13 22:24 ` Jason Gunthorpe
2015-01-14 16:06 ` One Thousand Gnomes
2015-01-14 18:12 ` Jason Gunthorpe
2015-01-14 19:01 ` Pantelis Antoniou
2015-01-15 11:36 ` One Thousand Gnomes
2015-01-15 11:44 ` Mark Brown
2015-01-15 16:34 ` atull
2015-01-15 18:47 ` Jason Gunthorpe
2015-01-15 20:45 ` One Thousand Gnomes
2015-01-15 20:54 ` Pantelis Antoniou
2015-01-21 16:01 ` One Thousand Gnomes
[not found] ` <20150121160151.453ba403-qBU/x9rampVanCEyBjwyrvXRex20P6io@public.gmane.org>
2015-01-21 16:33 ` Pantelis Antoniou
[not found] ` <D466D9FF-25DA-4765-9469-128733BEBC4D-OWPKS81ov/FWk0Htik3J/w@public.gmane.org>
2015-01-21 20:27 ` Jason Gunthorpe
2015-01-21 20:32 ` Pantelis Antoniou
2015-02-15 22:40 ` Pavel Machek
2015-02-17 17:07 ` Rob Landley
2015-02-17 19:17 ` Pavel Machek [this message]
2015-02-19 12:46 ` Michal Simek
2015-02-21 6:31 ` atull
2015-02-17 18:12 ` Jason Gunthorpe
2015-01-15 21:42 ` Jason Gunthorpe
2015-01-17 21:11 ` Pavel Machek
2015-01-06 20:13 ` [PATCH v8 3/4] staging: fpga manager: framework core atull
2015-01-06 20:13 ` [PATCH v8 4/4] staging: fpga manager: add driver for socfpga fpga manager atull
2015-01-10 18:11 ` [PATCH v8 0/4] FPGA Manager Framework Konrad Zapalowicz
2015-01-11 16:08 ` atull
2015-01-11 16:24 ` Konrad Zapalowicz
2015-01-11 19:52 ` Pavel Machek
2015-01-11 20:58 ` Konrad Zapalowicz
2015-01-11 21:31 ` Pavel Machek
2015-01-12 13:50 ` Michal Simek
2015-01-12 14:06 ` Dan Carpenter
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