linux-kernel - Re: [PATCH 24/29] drm/i915/gvt: remove the extra vfio

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Message-ID: <20211102161919.GD2744544@nvidia.com>
Date:   Tue, 2 Nov 2021 13:19:19 -0300
From:   Jason Gunthorpe <jgg@...dia.com>
To:     Christoph Hellwig <hch@....de>
Cc:     Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Zhenyu Wang <zhenyuw@...ux.intel.com>,
        Zhi Wang <zhi.a.wang@...el.com>,
        intel-gfx@...ts.freedesktop.org,
        intel-gvt-dev@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 24/29] drm/i915/gvt: remove the extra vfio_device
 refcounting for dmabufs

On Tue, Nov 02, 2021 at 08:05:56AM +0100, Christoph Hellwig wrote:
> All the dmabufs are torn down when th VGPU is released, so there is
> no need for extra refcounting here.
> 
> Based on an patch from Jason Gunthorpe.
> 
> Signed-off-by: Christoph Hellwig <hch@....de>
> ---
>  drivers/gpu/drm/i915/gvt/dmabuf.c | 12 ------------
>  drivers/gpu/drm/i915/gvt/gvt.h    |  1 -
>  2 files changed, 13 deletions(-)

Oh, here it gets fixed up, yes:

Reviewed-by: Jason Gunthorpe <jgg@...dia.com>

Jason