From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wg0-f48.google.com (mail-wg0-f48.google.com [74.125.82.48]) by kanga.kvack.org (Postfix) with ESMTP id 2D9306B006E for ; Tue, 18 Nov 2014 12:14:18 -0500 (EST) Received: by mail-wg0-f48.google.com with SMTP id y19so6149522wgg.21 for ; Tue, 18 Nov 2014 09:14:17 -0800 (PST) Received: from mx2.suse.de (cantor2.suse.de. [195.135.220.15]) by mx.google.com with ESMTPS id df6si22056584wib.106.2014.11.18.09.14.17 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Tue, 18 Nov 2014 09:14:17 -0800 (PST) Date: Tue, 18 Nov 2014 17:14:14 +0000 From: Mel Gorman Subject: Re: [RFC PATCH 0/7] Replace _PAGE_NUMA with PAGE_NONE protections Message-ID: <20141118171413.GE2725@suse.de> References: <1415971986-16143-1-git-send-email-mgorman@suse.de> <5466C8A5.3000402@oracle.com> <20141118154246.GB2725@suse.de> <546B74F5.10004@oracle.com> <87tx1w78hi.fsf@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline In-Reply-To: <87tx1w78hi.fsf@linux.vnet.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: To: "Aneesh Kumar K.V" Cc: Sasha Levin , Linux Kernel , Linux-MM , Hugh Dickins , Dave Jones , Rik van Riel , Ingo Molnar , Kirill Shutemov , Linus Torvalds On Tue, Nov 18, 2014 at 10:26:41PM +0530, Aneesh Kumar K.V wrote: > Sasha Levin writes: > > > On 11/18/2014 10:42 AM, Mel Gorman wrote: > >> 1. I'm assuming this is a KVM setup but can you confirm? > > > > Yes. > > > >> 2. Are you using numa=fake=N? > > > > Yes. numa=fake=24, which is probably way more nodes on any physical machine > > than the new code was tested on? > > > >> 3. If you are using fake NUMA, what happens if you boot without it as > >> that should make the patches a no-op? > > > > Nope, still seeing it without fake numa. > > > >> 4. Similarly, does the kernel boot properly without without patches? > > > > Yes, the kernel works fine without the patches both with and without fake > > numa. > > > Hmm that is interesting. I am not sure how writeback_fid can be > related. We use writeback fid to enable client side caching with 9p > (cache=loose). We use this fid to write back dirty pages later. Can you > share the qemu command line used, 9p mount options and the test details ? > It would help if the test details included the kernel config. I got KVM working again on an server with an older installation and while it doesn't use 9p, I'm not seeing any other oddities either yet while running trinity. -- Mel Gorman SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org