lkml.org 
[lkml]   [2015]   [Feb]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v8 2/4] fpga manager: add sysfs interface document
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


\
 
 \ /
  Last update: 2015-02-17 20:21    [W:0.148 / U:0.312 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site