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 A35F0C76196 for ; Thu, 6 Apr 2023 11:58:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236853AbjDFL6S (ORCPT ); Thu, 6 Apr 2023 07:58:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49636 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238807AbjDFL5c (ORCPT ); Thu, 6 Apr 2023 07:57:32 -0400 X-Greylist: delayed 459 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Thu, 06 Apr 2023 04:54:58 PDT Received: from mail-41103.protonmail.ch (mail-41103.protonmail.ch [185.70.41.103]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C0BD1E53 for ; Thu, 6 Apr 2023 04:54:58 -0700 (PDT) Date: Thu, 06 Apr 2023 11:44:55 +0000 Authentication-Results: mail-41103.protonmail.ch; dkim=pass (2048-bit key) header.d=proton.me header.i=@proton.me header.b="dZ9KpKqj" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=proton.me; s=protonmail; t=1680781504; x=1681040704; bh=jDCBj8lshorW4gdkd4kJjUH+4/q9Xfg6ywnJShCYQyw=; h=Date:To:From:Cc:Subject:Message-ID:In-Reply-To:References: Feedback-ID:From:To:Cc:Date:Subject:Reply-To:Feedback-ID: Message-ID:BIMI-Selector; b=dZ9KpKqjZpp5ekB8Hwx8+atH3RXHtHtb8jmwcgcxXYUdxq3S5rnRvb6cG4JLo2Gnm EN1w+HfX+LY6vfSUh5jAQujFu1YzwnJkbqNXXgDur99xiTx631qZQejUg/yV/ZmNkf +pps5DwM7jmDLZKedntQZACZjQ1UWk8ng/xtOMgGlOdDmUxlLgqC4EJImgFKO4Ao2e um4qiqDRJvzu3RT5NbJly5Q/Qw0c2pc1tiEoW5dOgY22o7C74Jr4Rkfz5wnhgBHTdn SGYczFCacdgmFxBo+8mYgdxk87TFwM24WQ8lRnRXwcC2eJXRQ7Cu986BlW9+QxNrb5 QWf7kSBD4vN2Q== To: =?utf-8?Q?Petr_Tesa=C5=99=C3=ADk?= From: Juerg Haefliger Cc: Petr Tesarik , Christoph Hellwig , Jonathan Corbet , Marek Szyprowski , Robin Murphy , Borislav Petkov , "Paul E. McKenney" , Andrew Morton , Randy Dunlap , Damien Le Moal , Kim Phillips , "Steven Rostedt (Google)" , "open list:DOCUMENTATION" , open list , "open list:DMA MAPPING HELPERS" , Roberto Sassu , Alexander Graf Subject: Re: [RFC v1 3/4] swiotlb: Allow dynamic allocation of bounce buffers Message-ID: <20230406134440.72959135@gollum> In-Reply-To: <20230331110043.7b1ddfa3@meshulam.tesarici.cz> References: <4268fa4e-4f0f-a2f6-a2a5-5b78ca4a073d@huaweicloud.com> <20230331092553.677e9649@smeagol> <20230331110043.7b1ddfa3@meshulam.tesarici.cz> Feedback-ID: 45149698:user:proton MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="b1_ayphHOVkQ7156P23PkrcwNhMKb9WleLOMbnybo3AJ1Q" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is a multi-part message in MIME format. --b1_ayphHOVkQ7156P23PkrcwNhMKb9WleLOMbnybo3AJ1Q Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On Fri, 31 Mar 2023 11:00:43 +0200 Petr Tesa=C5=99=C3=ADk wrote: > Hi Juerg, > > On Fri, 31 Mar 2023 07:26:09 +0000 > Juerg Haefliger wrote: > > > On Tue, 28 Mar 2023 09:54:35 +0200 > > Petr Tesarik wrote: > > > >[...] > > > Anyway, I suspected that the buffers need not be imported into the vc= 4 > > > driver (also hinted by Eric Anholt in a 2018 blog post [1]), and it > > > seems I was right. I encountered the issue with Ubuntu 22.10; I > > > installed latest openSUSE Tumbleweed yesterday, and I was not able to > > > reproduce the issue there, most likely because the Mesa drivers have > > > been fixed meanwhile. This makes the specific case of the Raspberry P= i 4 > > > drivers moot. The issue may still affect other combinations of driver= s, > > > but I don't have any other real-world example ATM. > > > > I'm only seeing this problem with Wayland, no issue when switching Ubun= tu to > > X. It seems Tumbleweed is using X by default. > > I know; I was the team lead of SUSE low-level graphics engineers until > end of last year... I have just double-checked, but this output of > wayland-info in the GNOME session accessed over RDP is quite convincing: It sure is but how did you get that?? For me it's: $ wayland-info failed to create display: No such file or directory And from strace: connect(3, {sa_family=3DAF_UNIX, sun_path=3D"/run/user/1000/wayland-0"}, 27= ) =3D -1 ENOENT (No such file or directory) Which is kind of expected when running X, no? $ ps -ef | grep -iP 'xorg|wayland' opensuse 1377 1375 0 09:13 tty2 00:00:16 /usr/bin/Xorg.bin vt2 -disp= layfd 3 -auth /run/user/1000/gdm/Xauthority -nolisten tcp -background none = -noreset -keeptty -novtswitch -verbose 3 What am I missing? ...Juerg > interface: 'wl_compositor', version: 5, nam= e: 1 > interface: 'wl_shm', version: 1, nam= e: 2 > formats (fourcc): > 0x48344258 =3D 'XB4H' > 0x48344241 =3D 'AB4H' > 0x48345258 =3D 'XR4H' > 0x48345241 =3D 'AR4H' > 0x30334258 =3D 'XB30' > 0x30334241 =3D 'AB30' > 0x30335258 =3D 'XR30' > 0x30335241 =3D 'AR30' > 0x36314752 =3D 'RG16' > 0x34324258 =3D 'XB24' > 0x34324241 =3D 'AB24' > 1 =3D 'XR24' > 0 =3D 'AR24' > interface: 'wl_output', version: 3, nam= e: 3 > x: 0, y: 0, scale: 1, > physical_width: 430 mm, physical_height: 270 mm, > make: 'FUS', model: 'P20W-5 ECO', > subpixel_orientation: unknown, output_transform: normal, > mode: > width: 1680 px, height: 1050 px, refresh: 59.954 Hz, > flags: current preferred > interface: 'zxdg_output_manager_v1', version: 3, nam= e: 4 > xdg_output_v1 > output: 3 > name: 'HDMI-1' > description: 'Fujitsu Siemens Computers GmbH 20"' > logical_x: 0, logical_y: 0 > logical_width: 1680, logical_height: 1050 > interface: 'wl_data_device_manager', version: 3, nam= e: 5 > interface: 'zwp_primary_selection_device_manager_v1', version: 1, nam= e: 6 > interface: 'wl_subcompositor', version: 1, nam= e: 7 > interface: 'xdg_wm_base', version: 4, nam= e: 8 > interface: 'gtk_shell1', version: 5, nam= e: 9 > interface: 'wp_viewporter', version: 1, nam= e: 10 > interface: 'zwp_pointer_gestures_v1', version: 3, nam= e: 11 > interface: 'zwp_tablet_manager_v2', version: 1, nam= e: 12 > interface: 'wl_seat', version: 8, nam= e: 13 > name: seat0 > capabilities: pointer keyboard > keyboard repeat rate: 33 > keyboard repeat delay: 500 > interface: 'zwp_relative_pointer_manager_v1', version: 1, nam= e: 14 > interface: 'zwp_pointer_constraints_v1', version: 1, nam= e: 15 > interface: 'zxdg_exporter_v1', version: 1, nam= e: 16 > interface: 'zxdg_importer_v1', version: 1, nam= e: 17 > interface: 'zwp_linux_dmabuf_v1', version: 3, nam= e: 18 > formats (fourcc) and modifiers (names): > 0x48344258 =3D 'XB4H'; 0x00ffffffffffffff =3D INVALID > 0x48344241 =3D 'AB4H'; 0x00ffffffffffffff =3D INVALID > 0x36314752 =3D 'RG16'; 0x00ffffffffffffff =3D INVALID > 0x30334258 =3D 'XB30'; 0x00ffffffffffffff =3D INVALID > 0x30335258 =3D 'XR30'; 0x00ffffffffffffff =3D INVALID > 0x30334241 =3D 'AB30'; 0x00ffffffffffffff =3D INVALID > 0x30335241 =3D 'AR30'; 0x00ffffffffffffff =3D INVALID > 0x34324258 =3D 'XB24'; 0x00ffffffffffffff =3D INVALID > 0x34325258 =3D 'XR24'; 0x00ffffffffffffff =3D INVALID > 0x34324241 =3D 'AB24'; 0x00ffffffffffffff =3D INVALID > 0x34325241 =3D 'AR24'; 0x00ffffffffffffff =3D INVALID > interface: 'wp_single_pixel_buffer_manager_v1', version: 1, nam= e: 19 > interface: 'zwp_keyboard_shortcuts_inhibit_manager_v1', version: 1, nam= e: 20 > interface: 'zwp_text_input_manager_v3', version: 1, nam= e: 21 > interface: 'wp_presentation', version: 1, nam= e: 22 > presentation clock id: 1 (CLOCK_MONOTONIC) > interface: 'xdg_activation_v1', version: 1, nam= e: 23 > > Petr T --b1_ayphHOVkQ7156P23PkrcwNhMKb9WleLOMbnybo3AJ1Q Content-Type: application/pgp-signature; name=attachment.sig Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename=attachment.sig LS0tLS1CRUdJTiBQR1AgU0lHTkFUVVJFLS0tLS0NCg0KaVFJekJBRUJDZ0FkRmlFRWhaZlU5Nkl1 cHJ2aUxkZUxEOU9MQ1F1bVFyY0ZBbVF1c0tnQUNna1FEOU9MQ1F1bQ0KUXJlM3l3LytNd1BWaE5Y MjB0T3NzcW1vQnVwWFphMElzZGtpc0k4WnBIN2VrTHMveXZtZlRPRnRSQURqdVFndQ0Kdmg3RHEx N3RieGdyb0FLRU9ydjNuT2s4RVplWkZlZ2NTK0k3TnVhYVpEQUJhV0ZOQ1NjSlp0TkYrRUt4L2xX Tw0KdDluaEFRajVHK1JUZ2RrUmVla1A3aEpHeFVJRmhtWVpQM00zTVdwaFFqMTJLSnJTWWpYREhB akJMNDRFYnh5aQ0Kbi9vTEplRld6TUJBUWh4K0JDTlpqY1dHRlZGUnVOdlJhZE5EbXlrVFB5eWVw WTlUdWV5TWc1TGJXcHZLM2p3bw0KM25hOHRwd2U4T0UvbHlvSHBmVVVSWVQ3UjFMeWtMNkR0N3B4 c25hQUJ6QkJqalZiLzhHVkdFYUFybU1BdCtWcw0Kd2FmTEhLUjlTM2ROT1FJUVBJNmFwUmZhZEF4 QzBzNDBNQTdJOStvMFQxV25KUzdVdS9xVi9DODFVdHlZelpIaw0KYnFHbUIyQ0FCNS85cmVZTTVm WXorNVdROTFSSnVMeWlqV3krTG9iOGlYMVMxWnJla005V01ocXpxZzFhQXgzSA0KTGdIYUd5WkZG citBTUZ2MUN1czA2WFBKQVI1aWF3dU5OaTJwYWNEMXJacXhzSTd2QTk4R0ZzNjNFN3NjSjhMRg0K NVljS0pVRGppeDR2U2s4NjdIUGJPQ3BLVWZ1dzNjMi9weG5Oc0Q0L0FDQ2Z1QnFnSzRqV1E1L08x Qksxa0pqag0KdUp1SEhjVU5ydWRPcE05U3lrblZ6TXlZeUcrWDhUbW1RT1dkR0xoQlRKbUtxejB0 WldtMkZlKzdLS3U4MWtkMA0KY05vS1E0akpQN2k0NkJicWxnQ0phU2hiamNKY2U1SmFTSWJ1OWp1 WDVDZU9qSDI1Mkc4PQ0KPXhrdmYNCi0tLS0tRU5EIFBHUCBTSUdOQVRVUkUtLS0tLQ0K --b1_ayphHOVkQ7156P23PkrcwNhMKb9WleLOMbnybo3AJ1Q--