linux-kernel - RE: Domain faults when CONFIG_CPU_SW_DOMAIN

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Message-ID: <7e60a8ccde1940d68ec4780abe154cbd@EMAIL.axentia.se>
Date:	Thu, 10 Dec 2015 15:29:37 +0000
From:	Peter Rosin <peda@...ntia.se>
To:	Russell King - ARM Linux <linux@....linux.org.uk>
CC:	"'linux-kernel@...r.kernel.org'" <linux-kernel@...r.kernel.org>,
	"'linux-arm-kernel@...ts.infradead.org'" 
	<linux-arm-kernel@...ts.infradead.org>,
	"nico@...xnic.net" <nico@...xnic.net>,
	Will Deacon <will.deacon@....com>
Subject: RE: Domain faults when CONFIG_CPU_SW_DOMAIN_PAN is enabled

Russell King wrote:
> On Thu, Dec 03, 2015 at 09:37:51PM +0000, Peter Rosin wrote:
> > I took both patches for a quick spin (a dozen boots and one hour uptime
> > after that for each patch) and no incidents. I have not gathered data,
> > but the crash on boot feels like it's quite a bit above 50% when there
> > is a problem so this feels good (I used 5 clean reboots when I bisected
> > and that worked).
> > 
> > Reported-by: Peter Rosin <peda@...ntia.se>
> > Tested-by: Peter Rosin <peda@...ntia.se>
> > 
> > (and please don't forget to cc stable)
> 
> I've decided to do a more in-depth fix, so that we also solve the issue
> that when we schedule in these down_read()s, we don't leak the permissive
> domain register setting into the switched-to context.
> 
> Can you test this patch please?  Thanks.

Still looking good.

Cheers,
Peter

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