Received: by 2002:a05:6a10:206:0:0:0:0 with SMTP id 6csp2355858pxj; Sun, 30 May 2021 23:24:38 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwRfwwarYJtOtvJ4MOebXuzJm1ITHfgEL0KxALHfoldcYhyOuzb8sOXnX/D0tdnHnlAQI6R X-Received: by 2002:a17:906:bc98:: with SMTP id lv24mr21031735ejb.297.1622442277958; Sun, 30 May 2021 23:24:37 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1622442277; cv=none; d=google.com; s=arc-20160816; b=PFwverZDgaBgHgLGhpcjVSGyGpg6ctUfaQnfcds7UtYUSjMs6vg/aIPSsnlVCApZ3H QEFcRCcWezIPyqWh2EBddVPaGJSgqLmLVjxV5KNZ9O/z5QBj8JNdHBKezI/2Or/Rs2Lf l3xjW7+8VyssoZE3sWgxfJba1fSXEoNSigLs5khifydWf7es3th4INCxZsv/rKmlp0wv yjKHmzvU71dpCUNvqgDwHma64NxWmnsBQ2QZoxahtJ7g8i3gxzXJqdEZfPJ8JFdCYauk EFkPKI0UsI5PZ3c9lnqUmhoJVzHbcozIDSFq0B5Zm7/UU0d6DWALH7Fwjy5R/BVZeZD3 MH9Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :message-id:in-reply-to:date:sender:references:subject:cc:to:from :dkim-signature:dkim-filter; bh=pSKdUQ/SHtMFltluDtQtsnviwfqIGj8DHN4OUQFCP/s=; b=x6ZyUfF8tveFmepFwI+H2f52vh15y6+9N9JgQ65aCveLvP/QyzCtPFPK2eXnHQGIjR wzLANCZt+4bhBkwdAMi9LfYvf8ZBKrpkHfeGJidOISGwcQR/Vn3nmk2kLtvK4SyFKcKU i+xKs50PiG0TWlFFl1gjj9vr899aIFmnmkJyqfmEKlpIfOSccsn4WhPIa8h3luzNKsxj UQNkTyMdGuse7fFJMQ/mjFzeibr01NfXk0Bks4AC/LCwfnsYsh2eJuwOV3fqPSHRM45t l/vJ7Thv3pbzW+f4Q+SYytXLJUcRgSQGP8hR04ZvB3juzqp05ltq3CtH7G5Wev9NAOHn u7YQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@piap.pl header.s=mail header.b=aJL8+oiG; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=piap.pl Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id dd11si5127371edb.528.2021.05.30.23.24.15; Sun, 30 May 2021 23:24:37 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@piap.pl header.s=mail header.b=aJL8+oiG; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=piap.pl Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230174AbhEaGWl (ORCPT + 99 others); Mon, 31 May 2021 02:22:41 -0400 Received: from ni.piap.pl ([195.187.100.5]:46514 "EHLO ni.piap.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229752AbhEaGWk (ORCPT ); Mon, 31 May 2021 02:22:40 -0400 Received: from t19.piap.pl (OSB1819.piap.pl [10.0.9.19]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ni.piap.pl (Postfix) with ESMTPSA id D04974441F6; Mon, 31 May 2021 08:20:59 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 ni.piap.pl D04974441F6 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=piap.pl; s=mail; t=1622442059; bh=pSKdUQ/SHtMFltluDtQtsnviwfqIGj8DHN4OUQFCP/s=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=aJL8+oiGYQcTlYl0LdNbRZz63YBR+LqWa7xlq3YUcCPzX7/nO3TTmwlYqEzqwf23b JKN2N0viGCn5tVYh4jSZ2gYCi6zPOVMyo3TSWhaW7b++gVpLcqPwg88Z2ZclLtjH8H X3MqDfqQIVcd1NPakSNOpFAA55c0pa7MNnYdYaLg= From: =?utf-8?Q?Krzysztof_Ha=C5=82asa?= To: "Russell King (Oracle)" Cc: linux-arm-kernel , lkml Subject: Re: Data corruption on i.MX6 IPU in arm_copy_from_user() References: <20210526100843.GD30436@shell.armlinux.org.uk> <20210526131853.GE30436@shell.armlinux.org.uk> <20210528143544.GQ30436@shell.armlinux.org.uk> Sender: khalasa@piap.pl Date: Mon, 31 May 2021 08:20:59 +0200 In-Reply-To: <20210528143544.GQ30436@shell.armlinux.org.uk> (Russell King's message of "Fri, 28 May 2021 15:35:44 +0100") Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-KLMS-Rule-ID: 4 X-KLMS-Message-Action: skipped X-KLMS-AntiSpam-Status: not scanned, whitelist X-KLMS-AntiPhishing: not scanned, whitelist X-KLMS-AntiVirus: Kaspersky Security for Linux Mail Server, version 8.0.3.30, not scanned, whitelist Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org BTW writes (STMIA) to IPU registers are apparently not corrupted, only LDMIAs are affected - in pure userspace as well. --=20 Krzysztof Ha=C5=82asa Sie=C4=87 Badawcza =C5=81ukasiewicz Przemys=C5=82owy Instytut Automatyki i Pomiar=C3=B3w PIAP Al. Jerozolimskie 202, 02-486 Warszawa