linux-kernel - Re: [PATCH v2 8/8] ARM: tegra: support for secondary cores on Tegra30

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Message-ID: <20120206232305.GV24948@tbergstrom-lnx.Nvidia.com>
Date:	Tue, 7 Feb 2012 01:23:05 +0200
From:	Peter De Schrijver <pdeschrijver@...dia.com>
To:	Stephen Warren <swarren@...dia.com>
CC:	Colin Cross <ccross@...roid.com>, Olof Johansson <olof@...om.net>,
	"Russell King" <linux@....linux.org.uk>,
	Gary King <gking@...dia.com>, Arnd Bergmann <arnd@...db.de>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 8/8] ARM: tegra: support for secondary cores on
 Tegra30

On Thu, Feb 02, 2012 at 07:04:12PM +0100, Stephen Warren wrote:
> Peter De Schrijver wrote at Tuesday, January 31, 2012 9:41 AM:
> > Add support for bringing up secondary cores on Tegra30. On Tegra30 secondary
> > CPU cores are powergated, so we need to turn on the domains before we can bring
> > the CPU cores online. Bringing secondary cores online happens early during the
> > sytem boot, so we call powergating initialization from platform early_init
> > function.
> > 
> > Based on work by:
> > 
> > Scott Williams <scwilliams@...dia.com>
> > Colin Cross <ccross@...roid.com>
> > Alex Frid <afrid@...dia.com>
> > 
> > Signed-off-by: Peter De Schrijver <pdeschrijver@...dia.com>
> 
> The series,
> 
> Tested-by: Stephen Warren <swarren@...dia.com>
> 
> This time, since I now have the SD card working, I managed to test real
> user-space processes running on all 4 cores.
> 
> Note, patch 3 shouldn't compile due to a typo in a .size directive. It
> does for me, so I could test this! But, it didn't for Olof. Aside from
> that (which perhaps Olof would fixup during patch application?),

Indeed. The .size symbol is never used though, which might explain why it
compiled for you and me. I will leave it out in th enext version.

Cheers,

Peter.
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