linux-kernel - Re: [PATCH RFC drm-next 0/1] Add support for drm

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Message-ID: <dae5089d-e214-4518-b927-5c4149babad8@suse.de>
Date: Wed, 2 Apr 2025 11:45:21 +0200
From: Thomas Zimmermann <tzimmermann@...e.de>
To: Ryosuke Yasuoka <ryasuoka@...hat.com>, maarten.lankhorst@...ux.intel.com,
 mripard@...nel.org, airlied@...il.com, simona@...ll.ch,
 drawat.floss@...il.com, jfalempe@...hat.com
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
 linux-hyperv@...r.kernel.org
Subject: Re: [PATCH RFC drm-next 0/1] Add support for drm_panic

Hi

Am 02.04.25 um 10:43 schrieb Ryosuke Yasuoka:
> This patch adds drm_panic support for hyperv-drm driver. This function
> works but it's still needed to brush up. Let me hear your opinions.
>
> Once kernel panic occurs we expect to see a panic screen. However, to
> see the screen, I need to close/re-open the graphic console client
> window. As the panic screen shows correctly in the small preview
> window in Hyper-V manager and debugfs API for drm_panic works correctly,
> I think kernel needs to send signal to Hyper-V host that the console
> client refreshes, but I have no idea what kind of signal is needed.
>
> This patch is tested on Hyper-V 2022.
>
> Ryosuke Yasuoka (1):
>    drm/hyperv: Add support for drm_panic
>
>   drivers/gpu/drm/drm_simple_kms_helper.c     | 26 +++++++++++++
>   drivers/gpu/drm/hyperv/hyperv_drm_modeset.c | 42 +++++++++++++++++++++
>   include/drm/drm_simple_kms_helper.h         | 22 +++++++++++

No changes to simple_kms_helper please. This is obsolete and should go 
away. Just put everything into hyperv_drm.

Best regards
Thomas

>   3 files changed, 90 insertions(+)
>
>
> base-commit: cf05922d63e2ae6a9b1b52ff5236a44c3b29f78c

-- 
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)