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[23.128.96.18]) by mx.google.com with ESMTP id m8si13216912plt.409.2022.01.24.11.06.32; Mon, 24 Jan 2022 11:06:46 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b="JVTEjfW/"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232531AbiAXLu7 (ORCPT + 99 others); Mon, 24 Jan 2022 06:50:59 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:58879 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232727AbiAXLu0 (ORCPT ); Mon, 24 Jan 2022 06:50:26 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1643025025; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=SnozPUrejpB8IY9KHbWAe0uFCpl2C3OVRF4UKq2Q7OA=; b=JVTEjfW/LMZ7ET7+DToX28Y9KUrB0pHMR2Si9QwtKiOtVZXKU8dQ4/Tu1SU3qwnaK568rf 2cjMT1E1bxNKwxaoTyqLhdI5dbYh+qTntTW912HUVojVZvnd0e3pc7IXRWpUTm+ZUpt/2v Fn0bty+/AahGfeTKUHr+RUlnYsVFNZ0= Received: from mail-wr1-f70.google.com (mail-wr1-f70.google.com [209.85.221.70]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-394-x7h2y1_WMWuJmnQqXXIWPw-1; Mon, 24 Jan 2022 06:50:24 -0500 X-MC-Unique: x7h2y1_WMWuJmnQqXXIWPw-1 Received: by mail-wr1-f70.google.com with SMTP id a6-20020adfbc46000000b001d7370ace6eso1770367wrh.9 for ; Mon, 24 Jan 2022 03:50:23 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=SnozPUrejpB8IY9KHbWAe0uFCpl2C3OVRF4UKq2Q7OA=; b=jHi6VadODXiQgeEp+UrnQpsseLDOAqNfKB02ppPht1oYOu7ew2N8gue4kO+A/KEhzu uJhGphkd8WRYfP5OYW0Pz9hYxu/xVDU0y/9CojyZ2ekJCSF4SkQbDGldRgsGfc4sAczP zGMu+h5NEpOqflZbXBEMk9Mh9K5EOxmdbguhe/nzjLWQitJpgxLCgGzifLnBJLVatgjS dqSYy3R+QzbhPpe95Mfu4u+vmddQUkUvltnH3QONy+FZ0+xcyYQTsm33yg3UTmMn1okb Bnq/zMTVOVFsFRc3mC55k5zmoo08erWgG82K8x7rDZqLZyb4DpmLXfammgd6ACMerom1 dmWg== X-Gm-Message-State: AOAM530OhUwJBv3kjbZ6h6C59XghrggUsrb7JYl+f7GJyTgeuFBL9BiG E6Knbb23IHDtZP3U3vOcqyIZYDhxdtY5nZb1BZZ7t5VJ9UEw/2iXXD5OU9zUjzQ440e8w37Crna xULhG3knNzChrORm6PEtry57o X-Received: by 2002:a5d:588d:: with SMTP id n13mr14154334wrf.153.1643025022929; Mon, 24 Jan 2022 03:50:22 -0800 (PST) X-Received: by 2002:a5d:588d:: with SMTP id n13mr14154313wrf.153.1643025022753; Mon, 24 Jan 2022 03:50:22 -0800 (PST) Received: from [192.168.1.102] ([92.176.231.205]) by smtp.gmail.com with ESMTPSA id o12sm6904445wry.115.2022.01.24.03.50.21 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 24 Jan 2022 03:50:22 -0800 (PST) Message-ID: <2fc200bb-4b40-7833-31c9-90a78512b601@redhat.com> Date: Mon, 24 Jan 2022 12:50:20 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.4.0 Subject: Re: [PATCH 2/2] Revert "fbcon: Disable accelerated scrolling" Content-Language: en-US To: Thomas Zimmermann , Helge Deller , Gerd Hoffmann Cc: linux-fbdev@vger.kernel.org, Pavel Machek , Sam Ravnborg , Greg Kroah-Hartman , Sven Schnelle , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Claudio Suarez , Tomi Valkeinen , Geert Uytterhoeven , Daniel Vetter , Linus Torvalds References: <20220119110839.33187-1-deller@gmx.de> <20220119110839.33187-3-deller@gmx.de> <6c000477-002b-d125-b945-2c4831bad8a5@gmx.de> <20220121072006.ylw2hdl7jbkbwnre@sirius.home.kraxel.org> <64fd46cb-9746-3fd0-ec92-c64dba76875a@gmx.de> From: Javier Martinez Canillas In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 1/24/22 12:33, Thomas Zimmermann wrote: [snip] >> Thoughts? > > I can't say I approve keeping fbdev alive, but... > > With fbdev emulation, every DRM driver is an fbdev driver too. So > CONFIG_FB_DRIVER is somewhat misleading. Better add an option like > CONFIG_FBCON_HW_SCROLLING and have it selected by the fbdev drivers that > absolutely need HW acceleration. That option would then protect the rsp > code. > Agreed that this option would be better and allow distros to disable the code that was reverted. Best regards, -- Javier Martinez Canillas Linux Engineering Red Hat