linux-kernel - Re: [PATCH v2 7/7] drm/virtio: implement userptr: add interval tree

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Message-ID: <467838dc-a549-4c15-84ea-1322043542d1@collabora.com>
Date: Sun, 30 Mar 2025 15:04:50 +0300
From: Dmitry Osipenko <dmitry.osipenko@...labora.com>
To: Honglei Huang <honglei1.huang@....com>, David Airlie
 <airlied@...hat.com>, Gerd Hoffmann <kraxel@...hat.com>,
 Gurchetan Singh <gurchetansingh@...omium.org>, Chia-I Wu
 <olvaffe@...il.com>, Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
 Simona Vetter <simona@...ll.ch>, Rob Clark <robdclark@...il.com>,
 Huang Rui <ray.huang@....com>
Cc: dri-devel@...ts.freedesktop.org, virtualization@...ts.linux.dev,
 linux-kernel@...r.kernel.org, Demi Marie Obenour <demiobenour@...il.com>
Subject: Re: [PATCH v2 7/7] drm/virtio: implement userptr: add interval tree

On 3/30/25 14:57, Dmitry Osipenko wrote:
>> +	userptr = virtio_gpu_userptr_from_addr_range(
>> +		vfpriv, params->userptr, params->userptr + params->size - 1UL);
> Is it possible that userptr address will be same for two different
> processes?

See now the vfpriv->userptrs_tree, i.e. it's not a global tree.

-- 
Best regards,
Dmitry