linux-kernel - Re: [PATCH] drm/virtio: Remove restriction of non-zero blob

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Message-ID: <CAPaKu7Q3CAcoyEgvo1KZnJCx6-EO+CPcARCtzwE9Ddbb_OZA_Q@mail.gmail.com>
Date:   Tue, 22 Feb 2022 12:35:41 -0800
From:   Chia-I Wu <olvaffe@...il.com>
To:     Rob Clark <robdclark@...il.com>
Cc:     ML dri-devel <dri-devel@...ts.freedesktop.org>,
        Rob Clark <robdclark@...omium.org>,
        David Airlie <airlied@...ux.ie>,
        Gerd Hoffmann <kraxel@...hat.com>,
        Gurchetan Singh <gurchetansingh@...omium.org>,
        Daniel Vetter <daniel@...ll.ch>,
        "open list:VIRTIO GPU DRIVER" 
        <virtualization@...ts.linux-foundation.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drm/virtio: Remove restriction of non-zero blob_flags

On Sat, Feb 19, 2022 at 9:02 AM Rob Clark <robdclark@...il.com> wrote:
>
> From: Rob Clark <robdclark@...omium.org>
>
> With native userspace drivers in guest, a lot of GEM objects need to be
> neither shared nor mappable.  And in fact making everything mappable
> and/or sharable results in unreasonably high fd usage in host VMM.
>
> Signed-off-by: Rob Clark <robdclark@...omium.org>
Reviewed-by: Chia-I Wu <olvaffe@...il.com>