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([2a01:e0a:c:37e0:5b4d:4594:545c:dd8]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3b5e8e26c97sm16368518f8f.90.2025.07.15.15.00.59 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 15 Jul 2025 15:00:59 -0700 (PDT) Message-ID: <05c40a0a-d2b0-4f55-981f-6da3765eebb2@redhat.com> Date: Wed, 16 Jul 2025 00:00:56 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH drm-next] drm/bochs: Add support for drm_panic To: Askar Safin Cc: ryasuoka , airlied , dri-devel , kraxel , linux-kernel , "maarten.lankhorst" , mripard , simona , tzimmermann , virtualization References: <20250613132023.106946-1-ryasuoka@redhat.com> <20250714000456.14-1-safinaskar@zohomail.com> <1961897d-cf42-4495-aec7-f4c20dfe7566@redhat.com> <1980fcccefe.10a7c92b36705.2744765212931179004@zohomail.com> Content-Language: en-US, fr From: Jocelyn Falempe In-Reply-To: <1980fcccefe.10a7c92b36705.2744765212931179004@zohomail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 15/07/2025 22:35, Askar Safin wrote: > ---- On Tue, 15 Jul 2025 12:57:04 +0400 Jocelyn Falempe 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 >