From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3C4456AD9 for ; Thu, 9 Mar 2023 11:28:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1678361324; 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: in-reply-to:in-reply-to:references:references; bh=ZE/7iJwefnAXFkAm0lKDfvx+6HRiN8eOH8p7Wvai0wo=; b=Y0w9WY0anRnaOp5s5PVvSnqnK0gUmSfQDPj5w7KRjHBA9isrVwZCevt0G13wpgMz5zKWs5 u+hrjU8ksyk/DJxBACl24ZHXKRoZltK9pOdOjn3sn/zpPvvhNsdYIwAXpYnd41d/Vy6yBa xTqWMM3TgbGklMK0X2X4eODs1ytlQJk= Received: from mail-wm1-f70.google.com (mail-wm1-f70.google.com [209.85.128.70]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-299-nrGaabjkOtGcD4fgfjrxdg-1; Thu, 09 Mar 2023 06:28:43 -0500 X-MC-Unique: nrGaabjkOtGcD4fgfjrxdg-1 Received: by mail-wm1-f70.google.com with SMTP id u19-20020a05600c00d300b003eb24ce58ceso544475wmm.9 for ; Thu, 09 Mar 2023 03:28:43 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1678361322; h=mime-version:message-id:date:references:in-reply-to:subject:cc:to :from:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=ZE/7iJwefnAXFkAm0lKDfvx+6HRiN8eOH8p7Wvai0wo=; b=bv0pAE1kjZjADIcV9ZVV0+LlKBLwVyuPRTYlBqCGmr7zFBWRfbtfIu7aTiGahSFv0G oLpHF6nEApmlunqFbQAYKr+Lxauj2oOO1P/OWm9UaZq2d1S0ypDneXqmjsCY2OFPwQvY e2oIimARalZ8xSYpq+L6iN8vagOIWOHjdawQF3lkqUPvHFwNq3Z90BC6P7uUT8WXUt3b Vh1qHp2IIxdNxYKutcloK1uTn3gJadUEHD9odA0tcthE7eT6tsOc0wJ4HxIbJoC98Z9R TY/Nb/t8C8AZhGP9f0f/WaVgmd+gdEvENJ1ymAyxr75oLKX0zOz9EcKCmBLZSW8l7Vyy 5d9g== X-Gm-Message-State: AO0yUKXzOTnR0UyTyfafxGE7SRxY9c4wgPmsGn0mlAskaKJ15uYDiRGA u9NWM1C7bzDwMnQGwHUwN+DSBDlPa/GeUplBYP+dg6xXjFUN1oqTUEre8ON4ldIrKHfKUcKulcV nZP/qhTfwX8FYaNUf3L5CtYs= X-Received: by 2002:adf:fb51:0:b0:2ce:7219:42b8 with SMTP id c17-20020adffb51000000b002ce721942b8mr7244755wrs.32.1678361322366; Thu, 09 Mar 2023 03:28:42 -0800 (PST) X-Google-Smtp-Source: AK7set8Mn2JIY54bbfAArMm1jwHLD5d38GNHioh3xaVKkpiDjrBseSSAAHghi7SxByPhaXqMV5nmpg== X-Received: by 2002:adf:fb51:0:b0:2ce:7219:42b8 with SMTP id c17-20020adffb51000000b002ce721942b8mr7244719wrs.32.1678361322054; Thu, 09 Mar 2023 03:28:42 -0800 (PST) Received: from localhost (205.pool92-176-231.dynamic.orange.es. [92.176.231.205]) by smtp.gmail.com with ESMTPSA id c22-20020a7bc856000000b003dc4a47605fsm2372395wml.8.2023.03.09.03.28.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 09 Mar 2023 03:28:41 -0800 (PST) From: Javier Martinez Canillas To: Thomas Zimmermann , maarten.lankhorst@linux.intel.com, mripard@kernel.org, airlied@gmail.com, daniel@ffwll.ch, andrew@aj.id.au, laurentiu.palcu@oss.nxp.com, l.stach@pengutronix.de, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, p.zabel@pengutronix.de, anitha.chrisanthus@intel.com, edmund.j.dea@intel.com, khilman@baylibre.com, jbrunet@baylibre.com, martin.blumenstingl@googlemail.com, alain.volmat@foss.st.com, yannick.fertre@foss.st.com, raphael.gallais-pou@foss.st.com, philippe.cornu@foss.st.com, mcoquelin.stm32@gmail.com, alexandre.torgue@foss.st.com, jernej.skrabec@gmail.com, samuel@sholland.org, jyri.sarha@iki.fi, tomba@kernel.org, linus.walleij@linaro.org, hyun.kwon@xilinx.com, laurent.pinchart@ideasonboard.com Cc: linux-aspeed@lists.ozlabs.org, dri-devel@lists.freedesktop.org, linux-stm32@st-md-mailman.stormreply.com, Thomas Zimmermann , linux-amlogic@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH 21/22] drm/vc4: Use GEM DMA fbdev emulation In-Reply-To: <20230301153101.4282-22-tzimmermann@suse.de> References: <20230301153101.4282-1-tzimmermann@suse.de> <20230301153101.4282-22-tzimmermann@suse.de> Date: Thu, 09 Mar 2023 12:28:41 +0100 Message-ID: <878rg66u52.fsf@minerva.mail-host-address-is-not-set> Precedence: bulk X-Mailing-List: linux-sunxi@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain Thomas Zimmermann writes: > Use the fbdev emulation that is optimized for DMA helpers. Avoids > possible shadow buffering and makes the code simpler. > > Signed-off-by: Thomas Zimmermann > --- Reviewed-by: Javier Martinez Canillas -- Best regards, Javier Martinez Canillas Core Platforms Red Hat