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 B7B99C433F5 for ; Thu, 13 Jan 2022 22:32:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237533AbiAMWc0 (ORCPT ); Thu, 13 Jan 2022 17:32:26 -0500 Received: from outbound3.eu.mailhop.org ([52.29.21.168]:13864 "EHLO outbound3.eu.mailhop.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237652AbiAMWcX (ORCPT ); Thu, 13 Jan 2022 17:32:23 -0500 X-Greylist: delayed 1801 seconds by postgrey-1.27 at vger.kernel.org; Thu, 13 Jan 2022 17:32:22 EST ARC-Seal: i=1; a=rsa-sha256; t=1642110372; cv=none; d=outbound.mailhop.org; s=arc-outbound20181012; b=uennW3yVcMIzJ0RkJuN4g8GIrLxFLIfDRHEsh9iL73IRCu0bpq5H135TaiK261VPPU1CeYvue5/Yr Xe+f2rm2n4g/r15Q6RGT6E44t81u2ZQlW5ITNjYz4QRRLqx5WxLDBOuPFiovyw80qzFPlFWdECfWTN RJFo00IdtTHhENvWbmn3Bn8AcPeBqu3N2DEJ/k5oJFd7+8saP6VvN9mfL4WEGBB9QLcgiW27bLgSZO 4npZc6prj6rSPKkg5jHoVifVViJoqcgq5vR00aZuqSvUzVWAOY+vdlEzcthlXckeLcwITH/i2aneTi NWHC3vCJp83q2OZf9yEIVP717xmd+1A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=outbound.mailhop.org; s=arc-outbound20181012; h=content-type:mime-version:message-id:in-reply-to:date:references:subject:cc: to:from:dkim-signature:dkim-signature:from; bh=rNWUHGGDvJfQLWY/taj1SWuCMTjnvjFPnINSJEKI1nY=; b=umlXFqOegdeuW0i6SozAUVanrJXKIAq1QORnUnO4R+4cjIHdl3cJtZ5xq5UtEET2OjqQ+yEGonhQk IVosFw+tywLXvaBVLweVRWXILm+lPmoQxc/VOBNqZEx0nHFmuj2Td6NYeficIoLOEcrn2wnpV5+j/n QZFtGAXVPkwA3zOj6zrEiYZw6iJnCi9YBPEvOJiZhV03PDYZ/Uh1kHKUBUPExz3UllSl+seCC+kDJc 4+CHwwaQ//I/Db79egLJemY7jWDBGVU2YEnBVI7a7tSpJdneTPrWSvqUtmNURFT00juGrqt1xct+P1 XkpGRnomY54q63p02z8CoeXWP687JCQ== ARC-Authentication-Results: i=1; outbound3.eu.mailhop.org; spf=pass smtp.mailfrom=stackframe.org smtp.remote-ip=91.207.61.48; dmarc=none header.from=stackframe.org; arc=none header.oldest-pass=0; DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=stackframe.org; s=duo-1634547266507-560c42ae; h=content-type:mime-version:message-id:in-reply-to:date:references:subject:cc: to:from:from; bh=rNWUHGGDvJfQLWY/taj1SWuCMTjnvjFPnINSJEKI1nY=; b=RZuusrOs3EEIxaRIEGZabYaW7WRXhVybWvqucjpgddag6UgRP0fGLtb/iHpIeBGWLOp+T1fVBlaWO FlUR0K1DsAhSF5TLmAu/Yxjus2U9T87D/i1+qmZLVCBBfGz+u2bnIJkN/Xcnx2g3XlSghD8Ly9cYTq U9wtIRwew2uYuavg= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=outbound.mailhop.org; s=dkim-high; h=content-type:mime-version:message-id:in-reply-to:date:references:subject:cc: to:from:from; bh=rNWUHGGDvJfQLWY/taj1SWuCMTjnvjFPnINSJEKI1nY=; b=qzXT/BXVCWUn9Aj0QVMxnMm/giqAVWL+LdsEFu095+2rX7grGODOG4jeRf4KcziPEUrFkfkhDuH3M NOor7sHEYMd6nhJZInocaH8ibq3vVAVtJibB3UrJ63pLuFznpOf59cwWAZDSK/M0XxksUh30LM0v+5 p19gRfpPqzpxagBjD2PS4kR5NAom/oCxLdMzO2HE3Fbj4TqlOEg+LZGKYpEZe0fpxRP42NnnuG2gjI z2cPCq0oKuzj+F5eCyMsUxKoNiHOtrofjofgpzUoLOOnNCxYlXyVggv2ZLQqQsnEkpitO4tWSTeqf2 VNTtPvI/JAQEzwc6BPStWy7bglPtCQQ== X-Originating-IP: 91.207.61.48 X-MHO-RoutePath: dG9ta2lzdG5lcm51 X-MHO-User: 35ec3706-74ba-11ec-ba80-95b64d6800c5 X-Report-Abuse-To: https://support.duocircle.com/support/solutions/articles/5000540958-duocircle-standard-smtp-abuse-information X-Mail-Handler: DuoCircle Outbound SMTP Received: from mail.duncanthrax.net (propper.duncanthrax.net [91.207.61.48]) by outbound3.eu.mailhop.org (Halon) with ESMTPSA id 35ec3706-74ba-11ec-ba80-95b64d6800c5; Thu, 13 Jan 2022 21:46:07 +0000 (UTC) Received: from hsi-kbw-109-193-149-228.hsi7.kabel-badenwuerttemberg.de ([109.193.149.228] helo=x1.stackframe.org.stackframe.org) by mail.duncanthrax.net with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.93) (envelope-from ) id 1n87v3-004SHi-8E; Thu, 13 Jan 2022 23:46:05 +0200 From: Sven Schnelle To: Helge Deller Cc: Hamza Mahfooz , Thomas Zimmermann , linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org, Geert Uytterhoeven Subject: Re: fbdev: Garbage collect fbdev scrolling acceleration References: Date: Thu, 13 Jan 2022 22:46:03 +0100 In-Reply-To: (Helge Deller's message of "Thu, 13 Jan 2022 17:36:22 +0100") Message-ID: <87zgnz71ic.fsf@x1.stackframe.org> MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org Helge Deller writes: > I may have missed some discussions, but I'm objecting against this patch: > > b3ec8cdf457e5 ("fbdev: Garbage collect fbdev scrolling acceleration, part 1 (from TODO list)") > > Can we please (partly) revert it and restore the scrolling behaviour, > where fbcon uses fb_copyarea() to copy the screen contents instead of > redrawing the whole screen? > > I'm fine with dropping the ypan-functionality. > > Maybe on fast new x86 boxes the performance difference isn't huge, > but for all old systems, or when emulated in qemu, this makes > a big difference. > > Helge I second that. For most people, the framebuffer isn't important as they're mostly interested in getting to X11/wayland as fast as possible. But for systems like servers without X11 it's nice to have a fast console.