From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from delivery.antispam.mailspamprotection.com (delivery.antispam.mailspamprotection.com [185.56.87.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DAA9B227BB5; Wed, 7 Jan 2026 22:29:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=pass smtp.client-ip=185.56.87.12 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767824959; cv=pass; b=Axd9EAdHpwMntQ8EPcWCNYRV7Xz9859XvhJBAmgICh/85L93HF9vxOD78DCYHwlm2egX3QL1cH83nJWACylaFw6nFbABGZD7jivYSVZCiwd5KTibLwuVUueinr1dYGWLarTwXIANBK44BNFbBHd90hUO5DSo/TdHOHU/Jnev090= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767824959; c=relaxed/simple; bh=vUJ0BbrXYh7mZy663ljqfYIed37Fm7MXEIH9GYaQaRw=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=LuLoja8Cfi3NXQssW25cnhPlz1Bx9UWkV+9jM46LnVYEODK1XC7qYufdMbCexEtYNulw1F1eteLJNOOhvcbgNRHuKWe/1i15mrjrwlYyXP6ci5DRGbjvDugvkrSi5QkRjlHg7J/x9UTfVw3izeLdPZxa0tXLfI/0rwg7KNPCfR4= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=valla.it; spf=pass smtp.mailfrom=valla.it; dkim=pass (1024-bit key) header.d=antispam.mailspamprotection.com header.i=@antispam.mailspamprotection.com header.b=IQ6lGfLE; dkim=pass (1024-bit key) header.d=valla.it header.i=@valla.it header.b=PBQACCoT; arc=pass smtp.client-ip=185.56.87.12 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=valla.it Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=valla.it Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=antispam.mailspamprotection.com header.i=@antispam.mailspamprotection.com header.b="IQ6lGfLE"; dkim=pass (1024-bit key) header.d=valla.it header.i=@valla.it header.b="PBQACCoT" ARC-Seal: i=1; cv=none; a=rsa-sha256; d=outgoing.instance-europe-west4-6qs6.prod.antispam.mailspamprotection.com; s=arckey; t=1767824956; b=LHnUqGPHNPowcOV8CxKxvoW6b3Uzta9DS8TnhLg1CPzG/nSzRYivlLH8Gc9k0XZQKZyNPyN374 d+2WUmYR/RBxf8/1u7kOFK+ZhzxvTlzXXSu6PePLsJNgk/THNKlqP0tn0i2nNsg8YI32EKx/1N MtGYyyKBXSqLNMdHXxO3wV77yVlXubqE1YmevPOBeFo2CxOspwy8t9pcbYKJqoNAZ8nL8fOnn/ EftPIewyBL2FP/tHN8RkAc0b90DPo3jjbs43GcurtYCA7ppSuYnZKqyGeHgDlBQfqM9yf7m1aI l0TKKCbxdXq7/ttadxmLChV0hqaOQU2hEUC0mO2HVqit2A==; ARC-Authentication-Results: i=1; outgoing.instance-europe-west4-6qs6.prod.antispam.mailspamprotection.com; smtp.remote-ip=35.214.173.214; iprev=pass (214.173.214.35.bc.googleusercontent.com) smtp.remote-ip=35.214.173.214; auth=pass (LOGIN) smtp.auth=esm19.siteground.biz; dkim=pass header.d=valla.it header.s=default header.a=rsa-sha256; arc=none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed; d=outgoing.instance-europe-west4-6qs6.prod.antispam.mailspamprotection.com; s=arckey; t=1767824956; bh=vUJ0BbrXYh7mZy663ljqfYIed37Fm7MXEIH9GYaQaRw=; h=In-Reply-To:Content-Type:MIME-Version:References:Message-ID:Subject:Cc:To: From:Date:DKIM-Signature:DKIM-Signature; b=FWi+F5RTCiveSAONaMzz4SlgORMyBE0mmkH1NruJe48rP5aGqhW/bfRsph+sGDqdRrCnV/hyAN EMA+gHVwGwxInSgHAne+JmZydYmi+GCo85mI1cx8LAKhPM7H9msRYaMtl/vOHekme7sDB1asTF jd8VoDCtvihzZYNM0gj+f6xSq7mT7jQfbyzOaCHJuFoVUK3UZ8GooP1xGBCWhZNfF4k+epT2IT w0rBiPYAnun7iiPQ2nW7YQOoYAklitAKQsluFzluJyfps5+6n2X9jA8Me4uLGWn+Yds4vRZWW/ 9nZlHKyeJlCHR8aNmFLzmWMiaWz7fBJLFEqxbkU4Iup7yg==; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=antispam.mailspamprotection.com; s=default; h=CFBL-Feedback-ID:CFBL-Address :Content-Type:MIME-Version:Message-ID:Subject:Cc:To:From:Date:Reply-To: List-Unsubscribe:Content-Transfer-Encoding; bh=yVpw/AFuECU04xueC/YGj/KVCIxCNmuJWWOG1YRA/ns=; b=IQ6lGfLE57n/ONvNZyf960yOSU dYcikvUgVhaNhcwDSF7DGdJnU6NGm3YN1qKUqviVYe0LrNsxVEVS6Z23QqiBRMIp/bR+CfzbSCn1v nwfhZGJB7NK/sAs8fLuVbY4A9+50h7CXtS19dC/Kr4u+LmpY2JhuT64yFtnbDV9bDvrA=; Received: from 214.173.214.35.bc.googleusercontent.com ([35.214.173.214] helo=esm19.siteground.biz) by instance-europe-west4-6qs6.prod.antispam.mailspamprotection.com with esmtpsa (TLS1.3) tls TLS_AES_256_GCM_SHA384 (Exim 4.98.1) (envelope-from ) id 1vdc1Z-0000000Ggzw-2ssP; Wed, 07 Jan 2026 22:29:08 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=valla.it; s=default; h=Subject:Cc:To:From:Date:list-help:list-unsubscribe: list-subscribe:list-post:list-owner:list-archive; bh=yVpw/AFuECU04xueC/YGj/KVCIxCNmuJWWOG1YRA/ns=; b=PBQACCoT+6hh/NZcgoOJuQrlyl AwyX7RM6fS0wUTl/N2m4KlG8PIsV41d4736N+derKRY6gvBkcko+zzKriqABXlCcdZmZGzc9nGXYw /WLBORKPx8Y/mpxbzSH+lrc9RAjfdxnntlULWjn8oAamIcupVWU6xjI7Z0iE5hvzIF9Y=; Received: from [95.248.141.113] (port=63495 helo=bywater) by esm19.siteground.biz with esmtpsa (TLS1.3) tls TLS_AES_256_GCM_SHA384 (Exim 4.98.1) (envelope-from ) id 1vdc1B-00000000BOX-0u1s; Wed, 07 Jan 2026 22:28:41 +0000 Date: Wed, 7 Jan 2026 23:28:39 +0100 From: Francesco Valla To: "Mario Limonciello (AMD) (kernel.org)" Cc: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Jonathan Corbet , Jocelyn Falempe , Javier Martinez Canillas , Sam Ravnborg , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-doc@vger.kernel.org, linux-embedded@vger.kernel.org Subject: Re: [PATCH RFC v2 1/3] drm: client: add splash client Message-ID: References: <20260106-drm_client_splash-v2-0-6e86a7434b59@valla.it> <20260106-drm_client_splash-v2-1-6e86a7434b59@valla.it> <894581a9-2a30-428d-ab94-34697147d68e@kernel.org> <12c72476-a4e8-4b00-80ae-b8eed0b6f7a7@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <12c72476-a4e8-4b00-80ae-b8eed0b6f7a7@kernel.org> X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - esm19.siteground.biz X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - valla.it X-Source: X-Source-Args: X-Source-Dir: X-SGantispam-id: f59ea43727b9503e245a7c191050347c AntiSpam-DLS: false AntiSpam-DLSP: AntiSpam-DLSRS: AntiSpam-TS: 1.0 CFBL-Address: feedback@antispam.mailspamprotection.com; report=arf CFBL-Feedback-ID: 1vdc1Z-0000000Ggzw-2ssP-feedback@antispam.mailspamprotection.com Authentication-Results: outgoing.instance-europe-west4-6qs6.prod.antispam.mailspamprotection.com; iprev=pass (214.173.214.35.bc.googleusercontent.com) smtp.remote-ip=35.214.173.214; auth=pass (LOGIN) smtp.auth=esm19.siteground.biz; dkim=pass header.d=valla.it header.s=default header.a=rsa-sha256; arc=none On Tue, Jan 06, 2026 at 08:40:46PM -0600, Mario Limonciello (AMD) (kernel.org) wrote: > > > Yes, that's the idea. I am still searching a EFI-enabled platform I can > > > perform some proper tests on, as I'm not really familiar with EFI. > > > This version was tested with OVMF on QEMU, but without a real userspace. > > > > Almost any modern x86 platform except for a chromebook uses EFI. > > > > I'll add them to my local dev tree and test too and see if I can get you > > some feedback if I run into any problems. > > > From my side when testing I hit this during kernel build: > > ERROR: modpost: "bgrt_tab" [drivers/gpu/drm/clients/drm_client_lib.ko] > undefined! > ERROR: modpost: "bgrt_image_size" > [drivers/gpu/drm/clients/drm_client_lib.ko] undefined! > I got the dependency wrong there, mistrusting the efifb driver (but I should have checked). I made CONFIG_DRM_CLIENT_SPLASH_SRC_BGRT dependent on CONFIG_EFI, while it should depend on CONFIG_ACPI_BGRT (which in turn depends on CONFIG_EFI). I'll fix in the next revision (if the overall work is deemed useful). Also, please note that the current version is not considering the x/y offset provided by the BGRT, nor the associated quirks and sanity checks. Thank you Regards, Francesco