linux-kernel - Re: iwl3945: order 5 allocation during ifconfig up; vm problem?

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Message-ID: <20121006120850.GB18025@elf.ucw.cz>
Date:	Sat, 6 Oct 2012 14:08:50 +0200
From:	Pavel Machek <pavel@....cz>
To:	Stanislaw Gruszka <sgruszka@...hat.com>
Cc:	David Rientjes <rientjes@...gle.com>, Mel Gorman <mgorman@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-wireless@...r.kernel.org, johannes.berg@...el.com,
	wey-yi.w.guy@...el.com, ilw@...ux.intel.com,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: iwl3945: order 5 allocation during ifconfig up; vm problem?

Hi!
On Fri 2012-10-05 10:37:00, Stanislaw Gruszka wrote:
> On Wed, Oct 03, 2012 at 11:07:13AM -0700, David Rientjes wrote:
> > On Wed, 3 Oct 2012, Stanislaw Gruszka wrote:
> > 
> > > So, can this problem be solved like on below patch, or I should rather
> > > split firmware loading into chunks similar like was already iwlwifi did?
> 
> Hmm, I looked at iwl3945 code and looks loading firmware in chunks is
> nothing that can be easily done. 3945 bootstrap code expect that runtime
> ucode will be placed in physically continue memory, and there are no
> separate instructions for copy and for execute, just one to perform both
> those actions. Maybe loading firmware in chunks can be done using
> undocumented features of the device, but I'm eager to do this.

Just allocate memory during boot?

> Pavel, do you still can reproduce this problem on released 3.6 ? 

It happened again yesterday on 3.6.0-rc6+. I don't think mm changed
between -rc6 and final...
								Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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