From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751523AbcABG3z (ORCPT ); Sat, 2 Jan 2016 01:29:55 -0500 Received: from mail-pa0-f51.google.com ([209.85.220.51]:36545 "EHLO mail-pa0-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751099AbcABG3x (ORCPT ); Sat, 2 Jan 2016 01:29:53 -0500 Date: Sat, 2 Jan 2016 11:59:29 +0530 From: Sudip Mukherjee To: Arnd Bergmann Cc: Bamvor Jian Zhang , y2038@lists.linaro.org, gregkh@linuxfoundation.org, broonie@kernel.org, linux-kernel@vger.kernel.org Subject: Re: [Y2038] [PATCH v2 2/2] ppdev: add support for compat ioctl Message-ID: <20160102062929.GA10432@sudip-pc> References: <1450346332-31830-1-git-send-email-bamvor.zhangjian@linaro.org> <6416183.AAnzQivnkS@wuerfel> <20160101050425.GB4135@sudip-pc> <9555229.aJQNyGf9cL@wuerfel> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <9555229.aJQNyGf9cL@wuerfel> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jan 01, 2016 at 11:09:45PM +0100, Arnd Bergmann wrote: > On Friday 01 January 2016 10:34:25 Sudip Mukherjee wrote: > > > Did you happen to check with both 32-bit and 64-bit user space on a > > > 64-bit kernel? This is one of the things that was not working originally > > > but should work now. > > > > I dont think I can manage 32 bit userspace on 64-bit kernel here. But I > > can definitely check it on a kvm guest. > > Just to be sure we are talking about the same thing: you mean running a 64-bit > kernel in a kvm guest with a 32-bit file system, right? Running a 32-bit > kvm guest on a 64-bit host would not be interesting of course. The kvm (actually qemu, started from virt-manager with -enable-kvm) that I just configured shows the following: lscpu shows: Architecture: i686 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 1 On-line CPU(s) list: 0 Thread(s) per core: 1 Core(s) per socket: 1 Socket(s): 1 Vendor ID: GenuineIntel CPU family: 6 Model: 6 Stepping: 3 CPU MHz: 2993.200 BogoMIPS: 5986.40 Virtualization: VT-x Hypervisor vendor: KVM Virtualization type: full L1d cache: 32K L1i cache: 32K L2 cache: 4096K uname -i shows: i686 Will it be ok to test in this one? regards sudip