From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 23F9DC35240 for ; Thu, 23 Jan 2020 23:24:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EC1F421D7E for ; Thu, 23 Jan 2020 23:24:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729602AbgAWXYp (ORCPT ); Thu, 23 Jan 2020 18:24:45 -0500 Received: from mga09.intel.com ([134.134.136.24]:1964 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729191AbgAWXYo (ORCPT ); Thu, 23 Jan 2020 18:24:44 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 23 Jan 2020 15:24:43 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,355,1574150400"; d="scan'208";a="230051908" Received: from sowmyasa-mobl1.amr.corp.intel.com (HELO [10.251.11.216]) ([10.251.11.216]) by orsmga006.jf.intel.com with ESMTP; 23 Jan 2020 15:24:42 -0800 Subject: Re: [PATCH v16.1 0/9] mm / virtio: Provide support for free page reporting To: Alexander Duyck , Johannes Weiner Cc: Alexander Graf , Alexander Duyck , kvm@vger.kernel.org, mst@redhat.com, linux-kernel@vger.kernel.org, willy@infradead.org, mhocko@kernel.org, linux-mm@kvack.org, akpm@linux-foundation.org, mgorman@techsingularity.net, vbabka@suse.cz, yang.zhang.wz@gmail.com, nitesh@redhat.com, konrad.wilk@oracle.com, david@redhat.com, pagupta@redhat.com, riel@surriel.com, lcapitulino@redhat.com, wei.w.wang@intel.com, aarcange@redhat.com, pbonzini@redhat.com, dan.j.williams@intel.com, osalvador@suse.de, "Paterson-Jones, Roland" , hare@suse.com References: <20200122173040.6142.39116.stgit@localhost.localdomain> <914aa4c3-c814-45e0-830b-02796b00b762@amazon.com> <20200123191705.GB154785@cmpxchg.org> From: Dave Hansen Openpgp: preference=signencrypt Autocrypt: addr=dave.hansen@intel.com; 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Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 1/23/20 2:29 PM, Alexander Duyck wrote: > Looking it over this kind of does what we would want to do, however we > would need to find a way to have this work without the cgroup requirement. > Essentially we would have the guest running this and then proactively > keeping its own resources in check. It's also worth noting that for Clear Linux, the guests are doing container-like things (https://katacontainers.io/) but inside virtual machines. The VM content in this case is known and relatively trusted, so generally isn't a stretch to assume that it can run a daemon and will mostly play nice.