linux-kernel - Re: [PATCH v2 2/6] drm/virtio: use struct to pass params to virtio_gpu_object

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <20190201081059.44w2x6vwap724coz@sirius.home.kraxel.org>
Date:   Fri, 1 Feb 2019 09:10:59 +0100
From:   Gerd Hoffmann <kraxel@...hat.com>
To:     Noralf Trønnes <noralf@...nnes.org>
Cc:     dri-devel@...ts.freedesktop.org, David Airlie <airlied@...ux.ie>,
        open list <linux-kernel@...r.kernel.org>,
        "open list:VIRTIO GPU DRIVER" 
        <virtualization@...ts.linux-foundation.org>
Subject: Re: [PATCH v2 2/6] drm/virtio: use struct to pass params to
 virtio_gpu_object_create()

> > -	ret = virtio_gpu_gem_create(file_priv, dev, args->size, &gobj,
> > +	params.pinned = false,
> 
> You have a comma here, but assigning to false isn't really necessary
> since the struct is zeroed. Same goes for the same assignment further down.

Hmm, yes, but it likewise isn't used, so I think I can just scratch it
altogether.

It's also wrong, virtio-gpu objects don't move around, so they are all
pinned.  Not that this bug changes much in practice given virtio-gpu
supports a single kind of storage only, so there is no opportunity for
ttm to try move objects from one to another.  I'll fix it nevertheless
in v3.

cheers,
  Gerd