linux-kernel - Re: [PATCH v16.1 0/9] mm / virtio: Provide support for free page reporting

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Message-ID: <15e3eba6-10a0-39ec-80ee-5abd1fd0780a@intel.com>
Date:   Thu, 23 Jan 2020 15:24:42 -0800
From:   Dave Hansen <dave.hansen@...el.com>
To:     Alexander Duyck <alexander.h.duyck@...ux.intel.com>,
        Johannes Weiner <hannes@...xchg.org>
Cc:     Alexander Graf <graf@...zon.com>,
        Alexander Duyck <alexander.duyck@...il.com>,
        kvm@...r.kernel.org, mst@...hat.com, linux-kernel@...r.kernel.org,
        willy@...radead.org, mhocko@...nel.org, linux-mm@...ck.org,
        akpm@...ux-foundation.org, mgorman@...hsingularity.net,
        vbabka@...e.cz, yang.zhang.wz@...il.com, nitesh@...hat.com,
        konrad.wilk@...cle.com, david@...hat.com, pagupta@...hat.com,
        riel@...riel.com, lcapitulino@...hat.com, wei.w.wang@...el.com,
        aarcange@...hat.com, pbonzini@...hat.com, dan.j.williams@...el.com,
        osalvador@...e.de, "Paterson-Jones, Roland" <rolandp@...zon.com>,
        hare@...e.com
Subject: Re: [PATCH v16.1 0/9] mm / virtio: Provide support for free page
 reporting

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.