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Message-ID: <56AA2A9C.5080602@arm.com>
Date:	Thu, 28 Jan 2016 08:50:04 -0600
From:	Jeremy Linton <jeremy.linton@....com>
To:	Mark Rutland <mark.rutland@....com>,
	Will Deacon <will.deacon@....com>, ard.biesheuvel@...aro.org
Cc:	Catalin Marinas <catalin.marinas@....com>, Feng Kan <fkan@....com>,
	dann frazier <dann.frazier@...onical.com>,
	Duc Dang <dhdang@....com>, linux-kernel@...r.kernel.org,
	Loc Ho <lho@....com>, Kumar Sankaran <ksankaran@....com>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] arm64: Disallow combination of ARCH_XGENE and 16K page
 size

On 01/28/2016 05:20 AM, Mark Rutland wrote:
> On Thu, Jan 28, 2016 at 11:08:20AM +0000, Will Deacon wrote:
>> On Thu, Jan 28, 2016 at 10:34:41AM +0000, Catalin Marinas wrote:

>> I thought there was also a suggestion that we could fail gracefully in
>> the EFI stub if we detected an unsupported page size?
>
> Yup. There are other things we could/should test, too.
>
> I believe Jeremy had a patch, but due to churn in that area it didn't
> get picked up.

I will clean-up and re-post that patch in the future too. It was fairly 
trivial so if someone feels the need for immediately...

https://lkml.org/lkml/2015/10/14/948

IMHO, The main sticking point initially was that the correct place for 
the check was a moving target. That problem has been fixed, so it should 
be easy to move it.









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