From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: Re: [PATCH 1/5 v2] x86: allow specifying the NUMA nodes Dom0 should run on Date: Fri, 06 Mar 2015 16:05:16 +0000 Message-ID: <54F9D03C.2090706@citrix.com> References: <54EF315902000078000640FF@mail.emea.novell.com> <54EF3348020000780006413C@mail.emea.novell.com> <54F8803F.3000003@citrix.com> <54F895A80200007800066B3D@mail.emea.novell.com> <54F891EE.2010900@citrix.com> <54F97F1D0200007800066DE4@mail.emea.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail6.bemta14.messagelabs.com ([193.109.254.103]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1YTukX-0007DF-A3 for xen-devel@lists.xenproject.org; Fri, 06 Mar 2015 16:05:17 +0000 In-Reply-To: <54F97F1D0200007800066DE4@mail.emea.novell.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: Jan Beulich , xen-devel Cc: Ian Campbell , KeirFraser , Dario Faggioli , Ian Jackson , TimDeegan List-Id: xen-devel@lists.xenproject.org On 06/03/2015 09:19, Jan Beulich wrote: > ... by introducing a "dom0_nodes" option augmenting the "dom0_mem" and > "dom0_max_vcpus" ones. > > Note that this gives meaning to MEMF_exact_node specified alone (i.e. > implicitly combined with NUMA_NO_NODE): In such a case any node inside > the domain's node mask is acceptable, but no other node. This changed > behavior is (implicitly) being exposed through the memop hypercalls. > > Note further that this change doesn't take care of moving the initrd > image into memory matching Dom0's affinity when the initrd doesn't get > copied (because of being part of the initial mapping) anyway. > > And note finally that this doesn't get us meaningfully closer to > handing vNUMA information to Dom0 (which will require the current > striping of allocations to become node-specific in order for the passed > on information to be meaningful). > > Signed-off-by: Jan Beulich > Acked-by: Ian Campbell Reviewed-by: Andrew Cooper