From mboxrd@z Thu Jan  1 00:00:00 1970
From: benh@kernel.crashing.org (Benjamin Herrenschmidt)
Date: Fri, 05 Oct 2018 13:25:38 +1000
Subject: [PATCH] memblock: stop using implicit alignement to
 SMP_CACHE_BYTES
In-Reply-To: <1538687224-17535-1-git-send-email-rppt@linux.vnet.ibm.com>
References: <1538687224-17535-1-git-send-email-rppt@linux.vnet.ibm.com>
Message-ID: <8891277c7de92e93d3bfc409df95810ee6f103cd.camel@kernel.crashing.org>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Fri, 2018-10-05 at 00:07 +0300, Mike Rapoport wrote:
> When a memblock allocation APIs are called with align = 0, the alignment is
> implicitly set to SMP_CACHE_BYTES.
> 
> Replace all such uses of memblock APIs with the 'align' parameter explicitly
> set to SMP_CACHE_BYTES and stop implicit alignment assignment in the
> memblock internal allocation functions.
> 
> For the case when memblock APIs are used via helper functions, e.g. like
> iommu_arena_new_node() in Alpha, the helper functions were detected with
> Coccinelle's help and then manually examined and updated where appropriate.
> 
> The direct memblock APIs users were updated using the semantic patch below:

What is the purpose of this ? It sounds rather counter-intuitive...

Ben.