Re: [1/1] powerpc/mm: Add memory barrier in __hugepte_alloc()

[Michael Ellerman]

On Tue, 2016-05-04 at 19:05:47 UTC, Sukadev Bhattiprolu wrote:
> >From f7b73c6b4508fe9b141a43d92be2f9dd7d3c4a58 Mon Sep 17 00:00:00 2001
> From: Sukadev Bhattiprolu <sukadev@xxxxxxxxxxxxxxxxxx>
> 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 <jdykman@xxxxxxxxxx>
> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
> Signed-off-by: Sukadev Bhattiprolu <sukadev@xxxxxxxxxxxxxxxxxx>
> Tested-by: James Dykman <jdykman@xxxxxxxxxx>

Applied to powerpc next, thanks.

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

cheers