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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id DEE4FD16817 for ; Fri, 9 Jan 2026 11:28:47 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5030D10E8A3; Fri, 9 Jan 2026 11:28:47 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; secure) header.d=mailbox.org header.i=@mailbox.org header.b="iPkzT5g7"; dkim-atps=neutral X-Greylist: delayed 336 seconds by postgrey-1.36 at gabe; Fri, 09 Jan 2026 11:28:45 UTC Received: from mout-p-102.mailbox.org (mout-p-102.mailbox.org [80.241.56.152]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9870C10E8A2; Fri, 9 Jan 2026 11:28:45 +0000 (UTC) Received: from smtp1.mailbox.org (smtp1.mailbox.org [IPv6:2001:67c:2050:b231:465::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mout-p-102.mailbox.org (Postfix) with ESMTPS id 4dnfXB1sQCz9tRD; Fri, 9 Jan 2026 12:23:06 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mailbox.org; s=mail20150812; t=1767957786; 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=4YVGV/Yb9izcoWuOvgKsXDa6QswfuZB/Juc+OgN1i7I=; b=iPkzT5g7FRvlP82GzKGjGT7cn7EcHblr0ojPzgEb3zuihspG68ED4gAh1naWA2nzf5OdGO UXkgN7TON8/IDpBPFc5iV2Wu65XIDcJ7LFO6g86AsHfvQd0j2/54Dnrmqtu/24HO9AIm+J VYkRI79gyd3Z2koUiR2IlpHIrhWF3hXC83XfDhP2Zfln1ncQZq6Z8Fed7xKIrOEJVgKuGq twIm/mMb+36eSkeyGaXduWgaOzAFKGzlMpC2ysK/9jY+d0LY60Y28TcjGrNRdhux/tOMl/ EBz+R0ndwAOkN25QUZmF3vI4FbS+PDUaz9TqK48XvNSgGsdzQ2WqRWWdIdii0g== Message-ID: <05ac3e30-b3dc-48ea-96db-1cbdb4454730@mailbox.org> Date: Fri, 9 Jan 2026 12:23:00 +0100 MIME-Version: 1.0 Subject: Re: [PATCH [RFC] v3 5/7] drm/atomic: Allow planes with NULL fb along with async flip To: "Murthy, Arun R" , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Jani Nikula , "Vivi, Rodrigo" , Joonas Lahtinen , Tvrtko Ursulin , "xaver.hugl@kde.org" , "andrealmeid@igalia.com" , "Kumar, Naveen1" , "Syrjala, Ville" , Dmitry Baryshkov Cc: "dri-devel@lists.freedesktop.org" , "intel-gfx@lists.freedesktop.org" , "intel-xe@lists.freedesktop.org" References: <20260108-async-v3-0-e7730c3fe9ff@intel.com> <20260108-async-v3-5-e7730c3fe9ff@intel.com> <6316ba11-0660-419c-afb6-a1588f6efef5@mailbox.org> From: =?UTF-8?Q?Michel_D=C3=A4nzer?= Content-Language: en-CA In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-MBO-RS-ID: 50e49ebdfe95bdea6d2 X-MBO-RS-META: 5pn7ingpy5i51pgnr5yizttjjzy98dq5 X-BeenThere: intel-xe@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Xe graphics driver List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-xe-bounces@lists.freedesktop.org Sender: "Intel-xe" On 1/9/26 12:08, Murthy, Arun R wrote: >> From: Michel Dänzer >> On 1/8/26 10:43, Arun R Murthy wrote: >>> Along with async flip if there is a request to disable a sync plane by >>> providing a NULL fb allow them. >> >> That could result in async changes to other planes taking effect in an earlier >> refresh cycle than the sync plane being disabled, couldn't it? In which case the >> commit arguably wouldn't actually be "atomic". >> > This is the request from the community to allow disabling of a sync plane in an async flip atomic ioctl. > https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/13834 Can't see any such request there. I suspect there might be a misunderstanding. -- Earthling Michel Dänzer \ GNOME / Xwayland / Mesa developer https://redhat.com \ Libre software enthusiast