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Date: Wed, 28 Nov 2018 14:11:26 -0800
From: Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH V2 0/5] NestMMU pte upgrade workaround for mprotect
Message-Id: <20181128141126.03004299897430353c37e889@linux-foundation.org>
In-Reply-To: <20181128143438.29458-1-aneesh.kumar@linux.ibm.com>
References: <20181128143438.29458-1-aneesh.kumar@linux.ibm.com>
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To: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
Cc: mpe@ellerman.id.au, benh@kernel.crashing.org, paulus@samba.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org

On Wed, 28 Nov 2018 20:04:33 +0530 "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> wrote:

> We can upgrade pte access (R -> RW transition) via mprotect. We need
> to make sure we follow the recommended pte update sequence as outlined in
> commit: bd5050e38aec ("powerpc/mm/radix: Change pte relax sequence to handle nest MMU hang")
> for such updates. This patch series do that.

The mm bits look (mostly) OK to me.  I suggest all these be merged via
the appropriate powerpc tree.