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Date:   Mon, 18 Feb 2019 13:01:41 -0500
From:   "Michael S. Tsirkin" <>
To:     Alexander Duyck <>
Cc:     David Hildenbrand <>,
        Nitesh Narayan Lal <>,
        kvm list <>,
        LKML <>,
        Paolo Bonzini <>,,,,
        Yang Zhang <>,
        Rik van Riel <>,,
        Konrad Rzeszutek Wilk <>,, Andrea Arcangeli <>
Subject: Re: [RFC][Patch v8 0/7] KVM: Guest Free Page Hinting

On Mon, Feb 18, 2019 at 09:31:13AM -0800, Alexander Duyck wrote:
> > Optimization of space comes with a price (here: execution time).
> One thing to keep in mind though is that if you are already having to
> pull pages in and out of swap on the host in order be able to provide
> enough memory for the guests the free page hinting should be a
> significant win in terms of performance.

Absolutely and I think that's the point of the hinting right?
To cut out swap/IO on the host.


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