From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Fri, 10 Jul 2026 23:53:22 +0200 Received: from mx1.white.stw.pengutronix.de ([2a0a:edc0:0:b01:1d::107]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1wiJ9u-002O2O-0x for lore@lore.pengutronix.de; Fri, 10 Jul 2026 23:53:22 +0200 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by mx1.white.stw.pengutronix.de (Postfix) with ESMTPS id 216BA20202F for ; Fri, 10 Jul 2026 23:53:22 +0200 (CEST) Authentication-Results: mx1.white.stw.pengutronix.de; dkim=pass header.d=lists.infradead.org header.s=bombadil.20210309 header.b=4r0XXSbL; spf=pass (mx1.white.stw.pengutronix.de: domain of "barebox-bounces+lore=pengutronix.de@lists.infradead.org" designates 2607:7c80:54:3::133 as permitted sender) smtp.mailfrom="barebox-bounces+lore=pengutronix.de@lists.infradead.org"; dmarc=none DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:MIME-Version:Date:Message-Id:Subject:References:In-Reply-To:To: From:Reply-To:Cc:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=OAf7doSJseLPPqhuUygXWZEmN3PsV2zeTJVOHSUc52c=; b=4r0XXSbLKXYDNriCk7qQYjyrom Ux+vvAPZpBi3fWdgBdfxNfapcNk1okw6eAesrWSw4GUceiCz84O3lJ6UvjgVBYme8jPcHdXEfiU3H BQX2lfhQj6u/0mynAsho3vrcsf4wi+riBDa7bEo2gNwPqjXNPjewBjgeGPXfmNtuIWJJj8zaoS1JR LM4hgzrfK42RKLKTMMwTCCHymqYWsxgE8fTAgs4Ym+pNE4pfmuXswHHrA3V/iTS24UQwIuvuACz+n 3izNTDe83O1EN+a3bH9o8qfYdtbL9PXpgH5dpipDQrZ2i6zMpaMZS11OcMzcbuZ5XRNcE+mFt3EGJ lU2LnQ2Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wiJ8v-00000005t2A-2Yhv; Fri, 10 Jul 2026 21:52:21 +0000 Received: from mx1.white.stw.pengutronix.de ([2a0a:edc0:0:b01:1d::107]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wiJ8s-00000005t1b-0VkX for barebox@lists.infradead.org; Fri, 10 Jul 2026 21:52:20 +0000 Received: from drehscheibe.grey.stw.pengutronix.de (drehscheibe.grey.stw.pengutronix.de [IPv6:2a0a:edc0:0:c01:1d::a2]) (Authenticated sender: relay-from-drehscheibe.grey.stw.pengutronix.de) by mx1.white.stw.pengutronix.de (Postfix) with ESMTPSA id 7761E202029; Fri, 10 Jul 2026 23:52:16 +0200 (CEST) Received: from dude02.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::28]) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1wiJ8q-0018rv-1K; Fri, 10 Jul 2026 23:52:16 +0200 Received: from [::1] (helo=dude02.red.stw.pengutronix.de) by dude02.red.stw.pengutronix.de with esmtp (Exim 4.98.2) (envelope-from ) id 1wiJ8q-0000000EtLz-1T2O; Fri, 10 Jul 2026 23:52:16 +0200 From: Sascha Hauer To: barebox@lists.infradead.org, Ahmad Fatoum In-Reply-To: <20260709071526.502694-1-a.fatoum@barebox.org> References: <20260709071526.502694-1-a.fatoum@barebox.org> Subject: Re: [PATCH] video: fb: mirror cdev writes to shadow buffer Message-Id: <178372033634.3549340.1615517830857184320.b4-ty@pengutronix.de> Date: Fri, 10 Jul 2026 23:52:16 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Mailer: b4 0.14.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260710_145218_319597_2647B44E X-CRM114-Status: UNSURE ( 5.12 ) X-CRM114-Notice: Please train this message. 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Content preview: On Thu, 09 Jul 2026 09:15:25 +0200, Ahmad Fatoum wrote: > The shadow framebuffer is allocated by the framebuffer core, > but maintained by gui_screen_blit and gu_screen_blit_area. > > Direct framebuf [...] Content analysis details: (-1.9 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.0 SPF_PASS SPF: sender matches SPF record -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] 0.0 DMARC_MISSING Missing DMARC policy X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-Spamd-Result: default: False [-6.61 / 15.00]; BAYES_HAM(-3.00)[99.99%]; DWL_DNSWL_MED(-2.00)[infradead.org:dkim]; RCVD_DKIM_ARC_DNSWL_MED(-0.50)[]; RCVD_IN_DNSWL_MED(-0.40)[2a0a:edc0:0:1101:1d::28:received,2607:7c80:54:3::133:from]; R_SPF_ALLOW(-0.20)[+mx:c]; MAILLIST(-0.20)[mailman]; R_DKIM_ALLOW(-0.20)[lists.infradead.org:s=bombadil.20210309]; MIME_GOOD(-0.10)[text/plain]; HAS_LIST_UNSUB(-0.01)[]; DMARC_NA(0.00)[pengutronix.de]; RECEIVED_HELO_LOCALHOST(0.00)[]; FUZZY_RATELIMITED(0.00)[rspamd.com]; ARC_NA(0.00)[]; RCPT_COUNT_TWO(0.00)[2]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; MIME_TRACE(0.00)[0:+]; RCVD_COUNT_FIVE(0.00)[5]; TAGGED_FROM(0.00)[lore=pengutronix.de]; FROM_NEQ_ENVFROM(0.00)[s.hauer@pengutronix.de,barebox-bounces@lists.infradead.org]; RCVD_VIA_SMTP_AUTH(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; NEURAL_HAM(-0.00)[-1.000]; RCVD_TLS_LAST(0.00)[]; ASN(0.00)[asn:7247, ipnet:2607:7c80:54::/48, country:US]; DKIM_TRACE(0.00)[lists.infradead.org:+]; FORGED_RECIPIENTS_MAILLIST(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[2a0a:edc0:0:c01:1d::a2:received]; FORGED_SENDER_MAILLIST(0.00)[] X-Rspamd-Action: no action X-Rspamd-Server: mx1 X-Rspamd-Queue-Id: 216BA20202F X-Stat-Signature: ffoxtfeygwux7dt9i1899n96zmxdtgtx On Thu, 09 Jul 2026 09:15:25 +0200, Ahmad Fatoum wrote: > The shadow framebuffer is allocated by the framebuffer core, > but maintained by gui_screen_blit and gu_screen_blit_area. > > Direct framebuffer devices currently ignore the shadow framebuffer, > which leads to surprising behavior when doing sequences like: > > cp /dev/zero /dev/fb0 > splash /env/data/splash.png > > [...] Applied, thanks! [1/1] video: fb: mirror cdev writes to shadow buffer https://git.pengutronix.de/cgit/barebox/commit/?id=dc1cb69a07dd (link may not be stable) Best regards, -- Sascha Hauer