Re: [PATCH drm-next] drm/bochs: Add support for drm_panic

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On 15/07/2025 22:35, Askar Safin wrote:
  ---- On Tue, 15 Jul 2025 12:57:04 +0400  Jocelyn Falempe <jfalempe@xxxxxxxxxx> wrote ---
  > "Normal panics", is just the console logs through fbcon. The problem is

Thank you for answer! Is this possible to configure system such that fbcon works normally,
VTs work normally (i. e. via framebuffer), but when panic happens, it is displayed via drm_panic? This seems to
be solution to the problem.

Yes, that's the default if you use a drm driver like bochs with fbdev emulation enabled. (Of course you can't have DRM panic on a pure fbdev driver).

There was a concurrency problem between fbcon and DRM panic, and I've solved it a year ago with:
https://patchwork.freedesktop.org/series/136182/

So make sure you have the following in your .config:

CONFIG_FRAMEBUFFER_CONSOLE=y
CONFIG_DRM_FBDEV_EMULATION=y
CONFIG_DRM_PANIC=y
CONFIG_DRM_PANIC_SCREEN="kmsg"

Best regards,

--

Jocelyn


--
Askar Safin
https://types.pl/@safinaskar






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