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 X-Spam-Level: X-Spam-Status: No, score=-9.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 43BE1C76186 for ; Mon, 29 Jul 2019 21:58:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 180D02182B for ; Mon, 29 Jul 2019 21:58:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=arista.com header.i=@arista.com header.b="gK7byqnv" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730561AbfG2V6q (ORCPT ); Mon, 29 Jul 2019 17:58:46 -0400 Received: from mail-wr1-f66.google.com ([209.85.221.66]:37849 "EHLO mail-wr1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730481AbfG2V6m (ORCPT ); Mon, 29 Jul 2019 17:58:42 -0400 Received: by mail-wr1-f66.google.com with SMTP id n9so38383494wrr.4 for ; Mon, 29 Jul 2019 14:58:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=arista.com; s=googlenew; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=GnwJnGDWcqQEa8ukjqPOjGYwDlsA8+VgoLza7ivYpuU=; b=gK7byqnvCZsRyAqDUYBeiSCrVa5couP/h+KwniMJqL09zy+rCaIohJDUe9fStHvTA7 JREI0X/pNKAN9fxf+88hlyirEJ9wIXGnsEl6D/EYxWQrZgmKwBAq6YVPrI0NvKK/HSST vRkw03heGflDUvYPLv0ERzuLcjmO6Z27rLXyVa5bIxr+JPAo9aeFJ8TMCN9GbUvf5pHb lXuDk7nvS5RxVQmOKi9cvUiaOhvfs8mXLFEcfA01gTUBIaJ5xNQAxl21rTlfwXaQaZ5c CJdzPvW9rvFWZGB5G4dhYwg6TUHvXTmaHPd0g32TU2ECThWVKeKSm6SkQYDgnyiGMqND HOFA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=GnwJnGDWcqQEa8ukjqPOjGYwDlsA8+VgoLza7ivYpuU=; b=VfJmS2oGni1QzITWM2K8LJGKdI364RMJXDyy5djJINx2oQjGD21KPv+E0aFmm78+9R dNtJL86NO98nrZIQkJvfnAMJZ8eO+eGZruKLAuUZqEBOjrJtajonz4uGYq7oSW8k07uE zDfjcz6i1nXELpG2sBpW2biIV6MGWxcBRFJtrKyDzv5GHlLZHrrT+z1utmwXPRBhImt9 IA0zsY2IfP/nHXy5BQBYYLUC5QBkx80wlQRRYoOckDehQC+pfTNyPc6ZbO0kP9zNmLjL oi8rLjfKve7znEJhIZ+J4GVnOW6ML3MiXIlpTktAFA/FsIkdL6ytASVcYGrreqC4Bt01 4E5w== X-Gm-Message-State: APjAAAVFvp+25RHQzlNPz7/rU2V/kUwvuxomLA8gNDFooekmzc6CS/FZ wOm/hqXUf00FwmyunkiZK+4iIaLJPjZ9ojIbKPG4tiBUMIYJ+CA1jyVSvA2+BOtD3Ogzl5+Mwdk 6a8jUGyqUAPrdze85EDiaXtfYraZdprHM2nt3wDw0NpvxWc4xtM0dGTiFzVZnCTJ7uwpellw1T+ y3Yr97X8T528FAIhADRUpuw8K4T37YgbrQjT1d9OM= X-Google-Smtp-Source: APXvYqyujkIL21jruIIVOjs8R1vGjVkFnG/AhEu3LLytd44H68v1bQ5N8nR+C3IOS4wZrjo9GetQ1Q== X-Received: by 2002:adf:cf02:: with SMTP id o2mr103003683wrj.352.1564437520327; Mon, 29 Jul 2019 14:58:40 -0700 (PDT) Received: from Mindolluin.ire.aristanetworks.com ([217.173.96.166]) by smtp.gmail.com with ESMTPSA id x20sm49230728wmc.1.2019.07.29.14.58.39 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Mon, 29 Jul 2019 14:58:39 -0700 (PDT) From: Dmitry Safonov To: linux-kernel@vger.kernel.org Cc: Dmitry Safonov <0x7f454c46@gmail.com>, Dmitry Safonov , Adrian Reber , Andrei Vagin , Andy Lutomirski , Arnd Bergmann , Christian Brauner , Cyrill Gorcunov , "Eric W. Biederman" , "H. Peter Anvin" , Ingo Molnar , Jann Horn , Jeff Dike , Oleg Nesterov , Pavel Emelyanov , Shuah Khan , Thomas Gleixner , Vincenzo Frascino , containers@lists.linux-foundation.org, criu@openvz.org, linux-api@vger.kernel.org, x86@kernel.org Subject: [PATCHv5 29/37] posix-clocks: Add align for timens_offsets Date: Mon, 29 Jul 2019 22:57:11 +0100 Message-Id: <20190729215758.28405-30-dima@arista.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190729215758.28405-1-dima@arista.com> References: <20190729215758.28405-1-dima@arista.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CLOUD-SEC-AV-Info: arista,google_mail,monitor X-CLOUD-SEC-AV-Sent: true X-Gm-Spam: 0 X-Gm-Phishy: 0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Align offsets so that time namespace will work for ia32 applications on x86_64 host. Co-developed-by: Andrei Vagin Signed-off-by: Andrei Vagin Signed-off-by: Dmitry Safonov --- include/linux/timens_offsets.h | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/include/linux/timens_offsets.h b/include/linux/timens_offsets.h index e93aabaa5e45..05da1b0563ce 100644 --- a/include/linux/timens_offsets.h +++ b/include/linux/timens_offsets.h @@ -2,9 +2,17 @@ #ifndef _LINUX_TIME_OFFSETS_H #define _LINUX_TIME_OFFSETS_H +/* + * Time offsets need align as they're placed on VVAR page, + * which is used by x86_64 and ia32 VDSO code. + * On ia32 offset::tv_sec (u64) has align(4), so re-align offsets + * to the same positions as 64-bit offsets. + * On 64-bit big-endian systems VDSO should convert to timespec64 + * to timespec because of a padding occurring between the fields. + */ struct timens_offsets { - struct timespec64 monotonic; - struct timespec64 boottime; + struct timespec64 monotonic __aligned(8); + struct timespec64 boottime __aligned(8); }; #endif -- 2.22.0