From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4F1A7C433FE for ; Mon, 24 Jan 2022 11:50:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238002AbiAXLu5 (ORCPT ); Mon, 24 Jan 2022 06:50:57 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:24458 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237927AbiAXLu0 (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-wm1-f69.google.com (mail-wm1-f69.google.com [209.85.128.69]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-564-W-WodtwfNWu4mlTJXcxllA-1; Mon, 24 Jan 2022 06:50:24 -0500 X-MC-Unique: W-WodtwfNWu4mlTJXcxllA-1 Received: by mail-wm1-f69.google.com with SMTP id z2-20020a05600c220200b0034d2eb95f27so10620047wml.1 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=ERjS4OC7wvij1UgMmuUuVdqZxpclotxWig5GOgJdNMz+2g5jA7F/ySrg9cEDcsDCkU CsXcdJvmypbd6VnBPUPws9sltKfLHFanCZ/GOav0zuQIKI07myM+IEGoNgALDAb+DbhE 6CKtKnP1qKDcF1gMF6pJE3zUd+Sk+h6YSvALmNvFiRT3E5nnMqPRmcKp4S1FOyUzi7AS o82gJm5W2bMtMfFzWC53NzXCOR2oUFoStcMiS1XwRwJ+icGxcu+VRrONZEgKtG8v9Gmb rPbVmeRCg5D4aws98bZm707Ql38OZksd5nLiSVZi3hhRQyizlt5AOF34OZ39rxEMT92V Y4QQ== X-Gm-Message-State: AOAM531Mr9WjmxhZaQHTAfiaHZ9DSnnjZu9u/epaUZE5jx4gxz3o9vPD JslZN+wpIfAXzQbbpKaaKlDcU4GtT/MDfwUdVos0y1rUuEcVciU6cibHaYtzAb5Bj2gnQcOP3ou X6YGndI3tsaCr9f5YAPUeNxs= X-Received: by 2002:a5d:588d:: with SMTP id n13mr14154325wrf.153.1643025022926; Mon, 24 Jan 2022 03:50:22 -0800 (PST) X-Google-Smtp-Source: ABdhPJwc+T8f2EA0pQatiSUAYWsweg14f3Fap55QqOPYFQTgJZjANOOALIERHOvplEdlRysuwhZ5oQ== 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-fbdev@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