linux-kernel - Re: [PATCH] ARM: /proc/cpuinfo: Use DT machine name when possible

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Date:	Mon, 24 Nov 2014 23:21:55 +0100
From:	Pali Rohár <pali.rohar@...il.com>
To:	Aaro Koskinen <aaro.koskinen@....fi>
Cc:	Rob Herring <robherring2@...il.com>,
	Ivaylo Dimitrov <ivo.g.dimitrov.75@...il.com>,
	Russell King <linux@....linux.org.uk>,
	Sebastian Reichel <sre@...ian.org>,
	Will Deacon <will.deacon@....com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Santosh Shilimkar <santosh.shilimkar@...com>,
	Pavel Machek <pavel@....cz>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] ARM: /proc/cpuinfo: Use DT machine name when possible

On Wednesday 18 June 2014 23:10:39 Aaro Koskinen wrote:
> Hi,
> 
> On Wed, Jun 18, 2014 at 09:22:29PM +0200, Pali Rohár wrote:
> > So without this patch DT migration for Nokia N900 cannot be
> > done without breaking userspace - which is not
> > acceptable...
> 
> I guess the fact is that the Nokia N900 proprietary userspace
> has never worked properly with the mainline kernel without
> severe patching, so you cannot really talk about any
> regression. If you cannot fix those programs, you could still
> probably emulate the old Nokia kernel's /proc/cpuinfo by
> providing some text file and bind mounting it, no?
> 
> A.

Mainline kernel (with patches for missing driver) working with 
Maemo CSSU-Devel userspace. So there are regressions.

Emulation of /proc/cpuinfo is possible if somebody provides 
needed info. But I still do not know from *where* to read 
machine, serial number and hw revision.

-- 
Pali Rohár
pali.rohar@...il.com

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