Re: [PATCH] of: Print rather than WARN'ing when overlap check fails

From: Michael Ellerman
Date: Tue Nov 10 2015 - 16:47:09 EST

On Tue, 2015-11-10 at 09:41 +0000, David Laight wrote:

> From: Michael Ellerman

> > Sent: 10 November 2015 05:09
> > __rmem_check_for_overlap() is called very early in boot, and on some
> > powerpc systems it's not safe to call WARN that early in boot.
> >
> > If the overlap check fails the system will oops instead of printing a
> > warning. Furthermore because it's so early in boot the console is not up
> > and the user doesn't see the oops, they just get a dead system.
> Wouldn't it be better to add the required checks to WARN()?

Yes obviously it would. But that's less simple than it sounds. I'm working on


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