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=-2.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 2D591C606B0 for ; Wed, 10 Jul 2019 09:12:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0393F2084B for ; Wed, 10 Jul 2019 09:12:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1562749974; bh=rS1FXWun4tnZthZjP5gvCnsRMWjJHRs43/TtJSmyduM=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=sGEqHAAIe0NgBixGkfOuDvs5JiDHJhcIlMXl4v0SP7lTJ/1Q9zqmyBinHKa0jXuBE wKLM8NvqmncvzholRBQoFP87A/ICdSu5QtphhncEE6uzoAQWslXxgioKOcvi6nTPhS Bky/VuUKM3vXzN5fjhNuHbdkdj5FhOEserp1eU/4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727621AbfGJJMx (ORCPT ); Wed, 10 Jul 2019 05:12:53 -0400 Received: from mail.kernel.org ([198.145.29.99]:51158 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726580AbfGJJMx (ORCPT ); Wed, 10 Jul 2019 05:12:53 -0400 Received: from willie-the-truck (236.31.169.217.in-addr.arpa [217.169.31.236]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 830AE20665; Wed, 10 Jul 2019 09:12:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1562749972; bh=rS1FXWun4tnZthZjP5gvCnsRMWjJHRs43/TtJSmyduM=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=1z2JsBfvr21gQUt5iPDz7NT2dAXcWemQ9w/74bx4HfLPPC6I7yVg06g5XX0Wfju1i A7YbWtlN91d+sVk5jnXkMYO7rltvml6cCoFWpUmywj+Czo+7nwKBl+DzPN77JGNAsg PKclIs28Fbusl8l9KEjTRFoEXRXj2I6/SdInl9L4= Date: Wed, 10 Jul 2019 10:12:45 +0100 From: Will Deacon To: Thomas Gleixner Cc: John Stultz , Vincenzo Frascino , linux-arch@vger.kernel.org, linux-arm-kernel , lkml , linux-mips@vger.kernel.org, linux-kselftest@vger.kernel.org, Shuah Khan , Andre Przywara , Arnd Bergmann , Huw Davies , Catalin Marinas , Daniel Lezcano , Will Deacon , Russell King , Ralf Baechle , Mark Salyzyn , Paul Burton , Dmitry Safonov <0x7f454c46@gmail.com>, Rasmus Villemoes , Shijith Thotton , Peter Collingbourne Subject: Re: [PATCH v7 10/25] arm64: compat: Add vDSO Message-ID: <20190710091245.zztm6cpbix4objlq@willie-the-truck> References: <20190621095252.32307-1-vincenzo.frascino@arm.com> <20190621095252.32307-11-vincenzo.frascino@arm.com> <20190710082750.mvm3e6myzpqsurga@willie-the-truck> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20170113 (1.7.2) Sender: linux-kselftest-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org On Wed, Jul 10, 2019 at 10:58:25AM +0200, Thomas Gleixner wrote: > On Wed, 10 Jul 2019, Will Deacon wrote: > > On Tue, Jul 09, 2019 at 09:02:54PM -0700, John Stultz wrote: > > > I tried to bisect things down a bit, but as some later fixes are > > > required (at one point, date was returning the start epoch and never > > > increasing), this hasn't worked too well. But I'm guessing since I > > > see: "CROSS_COMPILE_COMPAT not defined or empty, the compat vDSO will > > > not be built", and the system is half working, I'm guessing this is an > > > issue with just the 32bit code failing. While I can try to sort out > > > the proper CROSS_COMPILE_COMPAT in my build environment, I assume > > > userland shouldn't be crashing if that value isn't set. > > > > > > Any chance this issue has already been raised? > > > > First I've seen of it, although Vincenzo is likely to know better than me. > > In the meantime, please can you share your .config? > > I think the key is: CROSS_COMPILE_COMPAT not defined or empty. And then run > 32bit userspace. The part I was wondering about is whether the vectors page has been disabled at the same time, since I'm fairly sure I've already been running with the above (but I can easily double-check). Will