From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933700AbaH0K2O (ORCPT ); Wed, 27 Aug 2014 06:28:14 -0400 Received: from smtp.citrix.com ([66.165.176.89]:12634 "EHLO SMTP.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933323AbaH0K2N (ORCPT ); Wed, 27 Aug 2014 06:28:13 -0400 X-IronPort-AV: E=Sophos;i="5.04,409,1406592000"; d="scan'208";a="165566990" Message-ID: <53FDB2BA.8080506@citrix.com> Date: Wed, 27 Aug 2014 11:28:10 +0100 From: David Vrabel User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Icedove/24.5.0 MIME-Version: 1.0 To: Matt Rushton , , CC: , , , Matt Rushton Subject: Re: [PATCH v3 2/2] xen/setup: Remap Xen Identity Mapped RAM References: <1407778441-26604-1-git-send-email-mrushton@amazon.com> <1407778441-26604-2-git-send-email-mrushton@amazon.com> In-Reply-To: <1407778441-26604-2-git-send-email-mrushton@amazon.com> Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit X-DLP: MIA1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/08/14 18:34, Matt Rushton wrote: > Instead of ballooning up and down dom0 memory this remaps the existing mfns > that were replaced by the identity map. The reason for this is that the > existing implementation ballooned memory up and and down which caused dom0 > to have discontiguous pages. In some cases this resulted in the use of bounce > buffers which reduced network I/O performance significantly. This change will > honor the existing order of the pages with the exception of some boundary > conditions. Applied to devel/for-linus-3.18. Patch #1 is already present in 3.17-rc1. Thanks. David