linux-kernel - Re: [PATCH 9/9] drm/msm: Add a way for userspace to allocate GPU iova

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

Message-ID: <74a98688-67ad-6f8d-da1e-8fa0b32cff71@collabora.com>
Date:   Wed, 30 Mar 2022 02:17:27 +0300
From:   Dmitry Osipenko <dmitry.osipenko@...labora.com>
To:     Rob Clark <robdclark@...il.com>, dri-devel@...ts.freedesktop.org
Cc:     Rob Clark <robdclark@...omium.org>,
        open list <linux-kernel@...r.kernel.org>,
        Emma Anholt <emma@...olt.net>,
        Jonathan Marek <jonathan@...ek.ca>,
        Akhil P Oommen <quic_akhilpo@...cinc.com>,
        David Airlie <airlied@...ux.ie>, linux-arm-msm@...r.kernel.org,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Jordan Crouse <jordan@...micpenguin.net>,
        Sean Paul <sean@...rly.run>, freedreno@...ts.freedesktop.org,
        Dan Carpenter <dan.carpenter@...cle.com>
Subject: Re: [PATCH 9/9] drm/msm: Add a way for userspace to allocate GPU iova


On 3/30/22 02:00, Rob Clark wrote:
> +static int msm_ioctl_gem_info_set_iova(struct drm_device *dev,
> +		struct drm_file *file, struct drm_gem_object *obj,
> +		uint64_t iova)
> +{
> +	struct msm_drm_private *priv = dev->dev_private;
> +	struct msm_file_private *ctx = file->driver_priv;
> +
> +	if (!priv->gpu)
> +		return -EINVAL;
> +
> +	/* Only supported if per-process address space is supported: */
> +	if (priv->gpu->aspace == ctx->aspace)
> +		return -EINVAL;

nit: -EOPNOTSUPP ?