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

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Message-ID: <20250410090619-mutt-send-email-mst@kernel.org>
Date: Thu, 10 Apr 2025 09:14:27 -0400
From: "Michael S. Tsirkin" <mst@...hat.com>
To: Jocelyn Falempe <jfalempe@...hat.com>
Cc: linux-kernel@...r.kernel.org, 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>, 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,
	Eric Auger <eauger@...hat.com>
Subject: Re: [PATCH RFC] virtgpu: don't reset on shutdown

On Thu, Apr 10, 2025 at 02:51:47PM +0200, Jocelyn Falempe wrote:
> > > So it looks like the shutdown is called in the middle of console drawing, so
> > > either wait for it to finish, or let drm handle the shutdown, like your
> > > patch does.

The cleanest approach is actually just fixing surprise removal
of virtio-gpu. Because that's the path the generic shotdown takes -
pretends the device is gone.  I don't feel confident enough to work
on this, though.
Gerd, what's your take on it? Have some cycles to fix it properly?
Now? Eventually? Ack my hack for now?

-- 
MST