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Subject: Re: Kernel 4.7: PAGE_GUARDED and _PAGE_NO_CACHE
From: Michael Ellerman <mpe@ellerman.id.au>
To: Christian Zigotzky <chzigotzky@xenosoft.de>, "Aneesh Kumar K.V"
 <aneesh.kumar@linux.vnet.ibm.com>, Benjamin Herrenschmidt
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 <contact@a-eon.com>, Matthew Leaman <matthew@a-eon.biz>, luigi burdo
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Date: Wed, 08 Jun 2016 11:51:06 +1000
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On Wed, 2016-06-08 at 00:14 +0200, Christian Zigotzky wrote:
> Hi All,
> 
> I replaced the file "slice.c" with the old one from kernel 4.6. It 
> compiled but unfortunately it doesn't boot.

I would expect nothing else.

You can't just replace whole files from different versions, the unit of work is
a commit, not a file.

cheers