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Date:   Thu, 22 Jul 2021 14:55:19 +0200
From:   Christoph Hellwig <>
To:     Zhenyu Wang <>
Cc:     Christoph Hellwig <>,
        Jani Nikula <>,
        Joonas Lahtinen <>,
        Rodrigo Vivi <>,
        Zhi Wang <>,,,,,
        Greg Kroah-Hartman <>
Subject: Re: refactor the i915 GVT support

On Thu, Jul 22, 2021 at 05:45:16PM +0800, Zhenyu Wang wrote:
> The reason we isolated hypervisor specific code from core vgpu
> emulation is to make multiple hypervisor support possible. Yes, we do
> have Xen support but never got way into upstream...And we also have
> third party hypervisors which leverage gvt function through current
> hypervisor interface.

Out of tree stuff simply does not matter for the upstream kernel,
especially when it creates such a huge burden.

As a background:  I started this refactoring as a lot of the code did
not make much sense when reviewing the mdev integration in preparation
to switching them to the new mdev interface from Jason.

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