From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Kiper Subject: Re: [PATCHv2 00/10] mm, xen/balloon: memory hotplug improvements Date: Mon, 27 Jul 2015 21:37:34 +0200 Message-ID: <20150727193734.GA3492__9352.35503498024$1438025973$gmane$org@olila.local.net-space.pl> References: <1437738468-24110-1-git-send-email-david.vrabel@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail6.bemta5.messagelabs.com ([195.245.231.135]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1ZJoDg-0007HH-S2 for xen-devel@lists.xenproject.org; Mon, 27 Jul 2015 19:37:52 +0000 Content-Disposition: inline In-Reply-To: <1437738468-24110-1-git-send-email-david.vrabel@citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: David Vrabel Cc: linux-mm@kvack.org, xen-devel@lists.xenproject.org, Boris Ostrovsky , linux-kernel@vger.kernel.org List-Id: xen-devel@lists.xenproject.org On Fri, Jul 24, 2015 at 12:47:38PM +0100, David Vrabel wrote: > The series improves the use of hotplug memory in the Xen balloon > driver. > > - Reliably find a non-conflicting location for the hotplugged memory > (this fixes memory hotplug in a number of cases, particularly in > dom0). > > - Use hotplugged memory for alloc_xenballooned_pages() (keeping more > memory available for the domain and reducing fragmentation of the > p2m). > > Changes in v2: > - New BP_WAIT state to signal the balloon process to wait for > userspace to online the new memory. > - Preallocate P2M entries in alloc_xenballooned_pages() so they do not > need allocated later (in a context where GFP_KERNEL allocations are > not possible). Thanks! I will take a look at it this week. Daniel