From mboxrd@z Thu Jan 1 00:00:00 1970 From: Russell King Subject: Re: Open issues after 2.6.38 merge window Date: Mon, 17 Jan 2011 12:11:44 +0000 Message-ID: <20110117121144.GA18600@flint.arm.linux.org.uk> References: <20110114194758.GM4957@atomide.com> <701a8169276ef3a1eccbac0d31117a6b@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from caramon.arm.linux.org.uk ([78.32.30.218]:38052 "EHLO caramon.arm.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750728Ab1AQMMD (ORCPT ); Mon, 17 Jan 2011 07:12:03 -0500 Content-Disposition: inline In-Reply-To: <701a8169276ef3a1eccbac0d31117a6b@mail.gmail.com> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Santosh Shilimkar Cc: Aaro Koskinen , Tony Lindgren , linux-omap@vger.kernel.org On Mon, Jan 17, 2011 at 05:29:01PM +0530, Santosh Shilimkar wrote: > > On Fri, 14 Jan 2011, Tony Lindgren wrote: > > > Before I update out master branch, let's try to summarize the > > > open issues after the merge window. Here's a list of issues > > > in omap-fixes-for-linus that I'm aware of: > > > > > > - NFS root oopses while mounting root > > > > > > - omap4430 es1.0 hangs if L2X0 cache is enabled > > > > > > - omap4 panda powers down after boot (watchdog?) > > > > > > - omap3 ldp board powers down after boot? This doesn't happen for me. > > > > > > Any other issues? > > > > Amstrad E3 fails during the boot. Bisection points to: > > > > commit 211baa7016894c02fc18693e21ca479cd08ac0c0 > > Author: Russell King > > Date: Tue Jan 11 16:23:04 2011 +0000 > > > > ARM: sched_clock: allow init_sched_clock() to be called > > early > > > > The board does not have sched_clock(), although HAVE_SCHED_CLOCK is > > defined for all OMAP. > > > I guess above is sorted out by the attached patch from Paul. There's an issue missing from Tony's list: - running an omap2plus_defconfig kernel on SMP is unsafe to the point of being data corrupting for filesystems, especially for ext2/ext3 mounted read-write. This is because when CPU_32v6K is disabled - which is required to build a kernel to boot on ARMv6, it turns off the SMP safe bitops - the SMP safe bitops only use instructions available to ARMv6K and above. They are reduced to local-irq-disabling, plain byte loads and stores. So, running omap2plus_defconfig on SMP is risking filesystem corruption. Patches for this are being worked on, but they won't be ready for -rc1. I strongly suggest someone restores some kind of build or runtime error (eg, by removing CPU_32v6K's dependence on !OMAP2 - thereby _intentionally_ breaking omap2plus_defconfig) before someone ends up with a corrupted filesystem. Or just make sure that everyone is aware that omap2plus_defconfig can eat filesystems at the moment. -- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: