From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=mwa.re header.i=@mwa.re header.b="AAH5T3/r" Received: from mail-wm1-x32f.google.com (mail-wm1-x32f.google.com [IPv6:2a00:1450:4864:20::32f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6EE99BD for ; Thu, 14 Dec 2023 02:11:24 -0800 (PST) Received: by mail-wm1-x32f.google.com with SMTP id 5b1f17b1804b1-40c2bb872e2so74438135e9.3 for ; Thu, 14 Dec 2023 02:11:24 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mwa.re; s=google; t=1702548683; x=1703153483; darn=vger.kernel.org; h=mime-version:user-agent:content-transfer-encoding:date:cc:to:from :subject:message-id:from:to:cc:subject:date:message-id:reply-to; bh=DwJPwRC5n42ZUrIXnJ3iNJ62mEI4hAuX8AmnWt5GOxU=; b=AAH5T3/rqEOq2dzaJ2Ufabe5Mk6VaPvprls3UoMcYTv3bRd2kHUJyazl7R9nr1vPWj 5ZUCc3fuGsOgDCOCFmc1+o6j+Ydd79pY7yi8VIg65Kk1fIDUlm3uKrq/2Vk10bTOjVTM /4G/SxdXrDOhOnPCKjuC070BEjLNgO3j8jLtJ2W6ER8/JkTxT39VXK42aR7ohNzBmBRj gYPaL3NwFw7I2y8gugnda4SgSqL2eDIAoYjft1emCBKqLLapFCHlvH2uPHSwI6IlFTPc c1lUSiMohcKB8urIMmbh7r/4KPtRxbVfOR72xm7HXUbPE7lBnEa+TvVFA/j8uQ2Ow4QM Vhew== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1702548683; x=1703153483; h=mime-version:user-agent:content-transfer-encoding:date:cc:to:from :subject:message-id:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=DwJPwRC5n42ZUrIXnJ3iNJ62mEI4hAuX8AmnWt5GOxU=; b=Uw1Hbum75jJfMIbt4rpRUEF2NbG0gHmpvkjZzcnPGAfYMmT45qQFcSGx+BmhfLQYO3 nqpgCnTDFeEkxnzHw56MycJgK0DrkBe53Bjl7Y9C7vl95B4yyt6Lbry4QEZx2ypTJtoL AmndA+RI4mXDqTktgkyH4Xu5KhrOHhpboOMLV0rFsPV2LPrNY5SxVOMy5IQDSUsr2iey oPWuQQVurxoNTmHqJKcZvx1eEn6JgFvv1pO5XrMybUTlaCiMQTdCMZA0f1Lpm32SrBkU a5MEg1q7AqmDLEj4c55N+27sC57MTDsk5TkH1VkeKVcLfFZwjU+xXJcOftXrBRpWUakH z5KQ== X-Gm-Message-State: AOJu0YxYCuImChSPyLSZtVM5060+qZNgAiG+ZZZwHjwnJ2M39XZp7BHR 1QXlU3eiXfM7yjLPSdOuDJBWnA== X-Google-Smtp-Source: AGHT+IEwCgUn9rve/eSSnIs2eQKl/d1mHCrM3llLrsOtX7YNvUUHF9eUP2ONysYZWLp41VSUnG0cLA== X-Received: by 2002:a05:600c:3b1f:b0:40b:5f03:b39b with SMTP id m31-20020a05600c3b1f00b0040b5f03b39bmr2857734wms.189.1702548682746; Thu, 14 Dec 2023 02:11:22 -0800 (PST) Received: from 2001-4dd0-53c2-1-52b8-d67b-716b-9a96.ipv6dyn.netcologne.de (2001-4dd0-53c2-1-52b8-d67b-716b-9a96.ipv6dyn.netcologne.de. [2001:4dd0:53c2:1:52b8:d67b:716b:9a96]) by smtp.gmail.com with ESMTPSA id v6-20020a05600c444600b0040c4886f254sm14119157wmn.13.2023.12.14.02.11.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 14 Dec 2023 02:11:22 -0800 (PST) Message-ID: Subject: element sizes in input_event struct on riscv32 From: Antonios Salios To: dmitry.torokhov@gmail.com Cc: rydberg@bitmath.org, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, Jan Henrik Weinstock , Lukas =?ISO-8859-1?Q?J=FCnger?= Date: Thu, 14 Dec 2023 11:11:18 +0100 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.50.2 Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Hi all. I'm having trouble getting evdev to run in a simulated Buildroot environment on riscv32. Evtest (and the x11 driver) seems to be receiving garbage data from input devices. Analyzing the input_event struct shows that the kernel uses 32-bit (aka __kernel_ulong_t) values for __sec & __usec. Evtest on the other hand interprets these variables as 64-bit time_t values in a timeval struct, resulting in a mismatch between the kernel and userspace. What would be the correct size for these values on a 32-bit architecture that uses 64-bit time_t values? Kind regards --=20 Antonios Salios Student Employee MachineWare GmbH | www.machineware.de H=C3=BChnermarkt 19, 52062 Aachen, Germany Amtsgericht Aachen HRB25734 Gesch=C3=A4ftsf=C3=BChrung Lukas J=C3=BCnger Dr.-Ing. Jan Henrik Weinstock