From mboxrd@z Thu Jan  1 00:00:00 1970
From: Thomas Monjalon <thomas@monjalon.net>
Subject: Re: [PATCH] Revert "mem: allocate in reverse to reduce
	fragmentation"
Date: Thu, 26 Jul 2018 11:18:13 +0200
Message-ID: <23947652.nx9p32IzIJ@xps>
References: <0957f38f12ba6df24f0b48f24fe8236a6ce50efc.1532434698.git.anatoly.burakov@intel.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7Bit
Cc: dev@dpdk.org, john.mcnamara@intel.com, zhihong.wang@intel.com,
 qian.q.xu@intel.com, yu.y.liu@intel.com, lei.a.yao@intel.com,
 maxime.coquelin@redhat.com
To: Anatoly Burakov <anatoly.burakov@intel.com>
Return-path: <dev-bounces@dpdk.org>
Received: from out1-smtp.messagingengine.com (out1-smtp.messagingengine.com
 [66.111.4.25]) by dpdk.org (Postfix) with ESMTP id 244E323D
 for <dev@dpdk.org>; Thu, 26 Jul 2018 11:18:20 +0200 (CEST)
In-Reply-To: <0957f38f12ba6df24f0b48f24fe8236a6ce50efc.1532434698.git.anatoly.burakov@intel.com>
List-Id: DPDK patches and discussions <dev.dpdk.org>
List-Unsubscribe: <https://mails.dpdk.org/options/dev>,
 <mailto:dev-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://mails.dpdk.org/archives/dev/>
List-Post: <mailto:dev@dpdk.org>
List-Help: <mailto:dev-request@dpdk.org?subject=help>
List-Subscribe: <https://mails.dpdk.org/listinfo/dev>,
 <mailto:dev-request@dpdk.org?subject=subscribe>
Errors-To: dev-bounces@dpdk.org
Sender: "dev" <dev-bounces@dpdk.org>

24/07/2018 14:21, Anatoly Burakov:
> This reverts commit 179f916e88e4a0fdd5ad4d20e226771d3d271c41.
> 
> A few regressions with virtio/vhost have been discovered, due to the
> strong dependency of virtio/vhost on the underlying memory layout.
> Specifically, virtio/vhost share all memory pages starting from the
> beginning of the segment, while the patch above made it so that the
> memory is always allocated from the top of VA space, not from the
> bottom.
> 
> Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>

Applied with this fun title:
	mem: revert reversed allocation