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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 2609BC432C3 for ; Wed, 20 Nov 2019 19:35:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 05366208CC for ; Wed, 20 Nov 2019 19:35:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727637AbfKTTf1 (ORCPT ); Wed, 20 Nov 2019 14:35:27 -0500 Received: from mout.kundenserver.de ([212.227.126.135]:58741 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726440AbfKTTf0 (ORCPT ); Wed, 20 Nov 2019 14:35:26 -0500 Received: from mail-qv1-f51.google.com ([209.85.219.51]) by mrelayeu.kundenserver.de (mreue012 [212.227.15.129]) with ESMTPSA (Nemesis) id 1MnWx3-1i5d7I1UTl-00jW2R for ; Wed, 20 Nov 2019 20:35:25 +0100 Received: by mail-qv1-f51.google.com with SMTP id d3so381132qvs.11 for ; Wed, 20 Nov 2019 11:35:25 -0800 (PST) X-Gm-Message-State: APjAAAUU/mdAWK+CL9gIMtlS9tLJs1yEuv0r4MXIfevNECJmuV8VOrQq +4sP7tyzSteSURGB5GKoTseoa4Gjf4RhC1dfQMw= X-Google-Smtp-Source: APXvYqwHVWU2Zw8xn9+Bv1356Zmszxab3TK1Pmn6hsvPWLI2rMNceeRYyQBX3HSMLK8D/gT8L6zA69sS3PvhoK8Z6J0= X-Received: by 2002:ad4:50a4:: with SMTP id d4mr4074792qvq.211.1574278524246; Wed, 20 Nov 2019 11:35:24 -0800 (PST) MIME-Version: 1.0 References: <20191108203435.112759-1-arnd@arndb.de> <20191108203435.112759-4-arnd@arndb.de> In-Reply-To: From: Arnd Bergmann Date: Wed, 20 Nov 2019 20:35:07 +0100 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [Y2038] [PATCH 3/8] powerpc: fix vdso32 for ppc64le To: Ben Hutchings Cc: y2038 Mailman List , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , linuxppc-dev , "linux-kernel@vger.kernel.org" Content-Type: text/plain; charset="UTF-8" X-Provags-ID: V03:K1:30KBopqabv3uotMIxEYqngrzt0Ck4jrEYYgPvK5NG/ZoYx7gIbm 1yRmeMez6nymaFuiyoRXS2/nORduF5p6vPUkjtLa54rxqymNQyxKTZQvss/xKBoTiymK+MA B1b0urpCMKSHqIspfTQ/K8R4Bc3nsgBU437QyJaDgku4kSGbEhEKCicwjNyguFOd1indno+ 0HiDzSlHQoqqmD2pnRXhw== X-UI-Out-Filterresults: notjunk:1;V03:K0:9TUk0p3FXR4=:QvFvxbMS9Z+vkxL0gTUH/W eXIYdwwROxb/U7yaq4VdO5b6DHbzIzpcSek8VVi3R0GwD6jo+nwOv0AIABrj/rW2GL7sRHfXx Lkdr4WyhGPq/hG0TLaxS4Qt0xAaY98oEAulpcGuoHhMPLE//ADk+D4CCHlVYFwe9ypi/7KfDB c3XbqXAPIH8x4uIawQb6hENUXxMZO3uX8b00CsULTZykkw3ixfnvB20LYjKUHup4LGmovL/8Q u54nZHXZ1spcCbPrunKcN4rxlPbvtLxLQjnqOTW4thvdo4dcd1cD3YNigBFShAk1KHOv9tuah 1875sT8yTJ/z33uPMd+Vr7agzSPUCaiKsfHi1U9FvXLykOfuxxo2/xYcx9lz6S34UU55Z4ka8 BBdfr7Q8L5IkA39vKekyHEnIZUxckZupFvUpdu5BZDYMusPPtuJi74LB+Wch8HormUTABt514 S7TKfF2p8Z6SU2+zTTpmtSBlQPR82lRhJveCWpVvUBaRL64/zlVAFU6qPFnNqknnTewxPsCWs owps2tVp+LSAq8dFzdA0kNTsPKgK3CrIuyJpqs8epWuepYsvnvtBaNTW8Njq4Mwglf523A/NP usoYMRZsQ5VJSNziP6BeZp6M38kP62otHppLSLr7Mj8pxjlDD3jX8HvAmRolX758qNpyPch0j MuZ5HZrPdULeCACTzIXmIrSdgaMHfo5tBKbQ3zhb17AbkqxBQqgsmX3UIzv7cAzwx7WzN2oJx jIgsH2PLLwZi62Etsb8uA1mjkzX7WblrzRLqWbD4S5UB4SZhxjIZfmA55lLZfk+9ulrJV+kVY ujts0YrcJInYcvU0gDUSzxAUWgx+L1NQk0uCmmR3fCgHvsGAD/glSWRgqGCmwGX04IFoRO9RM 2KxZ9VBOVB/ZwfWj+koQ== Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Nov 20, 2019 at 8:13 PM Ben Hutchings wrote: > > On Fri, 2019-11-08 at 21:34 +0100, Arnd Bergmann wrote: > > On little-endian 32-bit application running on 64-bit kernels, > > the current vdso would read the wrong half of the xtime seconds > > field. Change it to return the lower half like it does on > > big-endian. > > ppc64le doesn't have 32-bit compat so this is only theoretical. That is probably true. I only looked at the kernel, which today still supports compat mode for ppc64le, but I saw the patches to disable it, and I don't think anyone has even attempted building user space for it. Arnd