On Tue, 2016-05-04 at 19:05:47 UTC, Sukadev Bhattiprolu wrote:

quoted

From f7b73c6b4508fe9b141a43d92be2f9dd7d3c4a58 Mon Sep 17 00:00:00 2001

From: Sukadev Bhattiprolu <redacted>
Date: Thu, 24 Mar 2016 02:07:57 -0400
Subject: [PATCH 1/1] powerpc/mm: Add memory barrier in __hugepte_alloc()

__hugepte_alloc() uses kmem_cache_zalloc() to allocate a zeroed PTE
and proceeds to use the newly allocated PTE. Add a memory barrier to
make sure that the other CPUs see a properly initialized PTE.

Based on a fix suggested by James Dykman.

Reported-by: James Dykman <redacted>
Signed-off-by: Aneesh Kumar K.V <redacted>
Signed-off-by: Sukadev Bhattiprolu <redacted>
Tested-by: James Dykman <redacted>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/0eab46be21449f1612791201aa

cheers