linux-kernel - Re: [PATCH v2] virtgpu: don't reset on shutdown

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Message-ID: <ge6675q3ahypfncrwbiodtcjnoftuza6ele5fhre3jmdeifsez@yy53fbwoulgo>
Date: Tue, 15 Apr 2025 13:16:32 +0200
From: Gerd Hoffmann <kraxel@...hat.com>
To: "Michael S. Tsirkin" <mst@...hat.com>
Cc: linux-kernel@...r.kernel.org, Eric Auger <eric.auger@...hat.com>, 
	Eric Auger <eauger@...hat.com>, Jocelyn Falempe <jfalempe@...hat.com>, 
	David Airlie <airlied@...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>, Jason Wang <jasowang@...hat.com>, 
	Xuan Zhuo <xuanzhuo@...ux.alibaba.com>, Eugenio Pérez <eperezma@...hat.com>, 
	dri-devel@...ts.freedesktop.org, virtualization@...ts.linux.dev
Subject: Re: [PATCH v2] virtgpu: don't reset on shutdown

  Hi,

> +static void virtio_gpu_shutdown(struct virtio_device *vdev)
> +{
> +	/*
> +	 * drm does its own synchronization on shutdown.
> +	 * Do nothing here, opt out of device reset.
> +	 */

I think a call to 'drm_dev_unplug()' is what you need here.

take care,
  Gerd