linux-kernel - Re: [PATCH v2] nouveau: pci: quiesce GPU on shutdown

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Message-ID: <CAPM=9tz8A7KXdAbXccn_9Qfich3YOXkZJifgUEfa8kMpqq_huQ@mail.gmail.com>
Date: Tue, 10 Feb 2026 06:17:23 +1000
From: Dave Airlie <airlied@...il.com>
To: Li Chen <me@...ux.beauty>
Cc: Dave Airlie <airlied@...hat.com>, Lyude Paul <lyude@...hat.com>, 
	Danilo Krummrich <dakr@...nel.org>, Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
	Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
	Simona Vetter <simona@...ll.ch>, dri-devel@...ts.freedesktop.org, 
	nouveau@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] nouveau: pci: quiesce GPU on shutdown

On Wed, 21 Jan 2026 at 21:37, Li Chen <me@...ux.beauty> wrote:
>
> Kexec reboot does not reset PCI devices.
> Invoking the full DRM/TTM teardown from ->shutdown can trigger WARNs when
> userspace still holds DRM file descriptors.
>
> Quiesce the GPU through the suspend path and then power down the PCI
> function so the next kernel can re-initialize the device from a consistent
> state.
>
I've applied this to drm-misc-next, which means it's targeting 7.1

Dave.