Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1162997Ab3DEUvb (ORCPT ); Fri, 5 Apr 2013 16:51:31 -0400 Received: from e34.co.us.ibm.com ([32.97.110.152]:42164 "EHLO e34.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1162134Ab3DEUv3 (ORCPT ); Fri, 5 Apr 2013 16:51:29 -0400 Message-ID: <515F3948.40205@linux.vnet.ibm.com> Date: Fri, 05 Apr 2013 16:51:20 -0400 From: "Michael R. Hines" User-Agent: Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/20130106 Thunderbird/17.0.2 MIME-Version: 1.0 To: Roland Dreier CC: "Michael S. Tsirkin" , Jason Gunthorpe , Sean Hefty , Hal Rosenstock , Yishai Hadas , Christoph Lameter , "linux-rdma@vger.kernel.org" , LKML , qemu-devel@nongnu.org Subject: Re: [PATCHv2] rdma: add a new IB_ACCESS_GIFT flag References: <20130324155153.GA8597@redhat.com> <515F3160.4020007@linux.vnet.ibm.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-TM-AS-MML: No X-Content-Scanned: Fidelis XPS MAILER x-cbid: 13040520-2876-0000-0000-00000728A9D6 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1354 Lines: 35 Sorry, I was wrong. ignore the comments about cgroups. That's still broken. (i.e. trying to register RDMA memory while using a cgroup swap limit cause the process get killed). But the GIFT flag patch works (my understanding is that GIFT flag allows the adapter to transmit stale memory information, it does not have anything to do with cgroups specifically). Am I missing something? I was only testing the GIFT flag patch. Note: I only turned it on - I did not verify the (non) consitency of the memory that was transmitted. - Michael On 04/05/2013 04:43 PM, Roland Dreier wrote: > On Fri, Apr 5, 2013 at 1:17 PM, Michael R. Hines > wrote: >> I also removed the IBV_*_WRITE flags on the sender-side and activated >> cgroups with the "memory.memsw.limit_in_bytes" activated and the migration >> with RDMA also succeeded without any problems (both with *and* without GIFT >> also worked). > Not sure I'm interpreting this correctly. Are you saying that things > worked without actually setting the GIFT flag? In which case why are > we adding this flag? > > - R. > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/