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Subject: Re: linux support for freescale e5500 core?
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Kumar Gala <galak@kernel.crashing.org>
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Date: Fri, 17 Sep 2010 15:33:05 +1000
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On Fri, 2010-09-17 at 00:17 -0500, Kumar Gala wrote:
> Not sure how the 970 bit worked, but this seems a bit problematic for
> switching between kernel and application for how we do this on
> e500mc/e5500.  We'd have to touch the control bit on every exception
> path which seems ugly to me.

Unless the kernel uses dcbzl (feature fixup replacement ?)

In that case it's on context switch only.

Cheers,
Ben.