From mboxrd@z Thu Jan 1 00:00:00 1970 From: Will Deacon Subject: Re: A bug about system call on ARM Date: Fri, 31 May 2013 12:13:05 +0100 Message-ID: <20130531111305.GI4928@mudshark.cambridge.arm.com> References: <35FD53F367049845BC99AC72306C23D1610991B85E@CNBJMBX05.corpusers.net> <20130529094826.GD13095@mudshark.cambridge.arm.com> <35FD53F367049845BC99AC72306C23D1610991B865@CNBJMBX05.corpusers.net> <35FD53F367049845BC99AC72306C23D1610991B866@CNBJMBX05.corpusers.net> <20130530090949.GC7483@mudshark.cambridge.arm.com> <20130530114112.GH7483@mudshark.cambridge.arm.com> <35FD53F367049845BC99AC72306C23D1610991B86D@CNBJMBX05.corpusers.net> <20130531084638.GB4928@mudshark.cambridge.arm.com> <35FD53F367049845BC99AC72306C23D1610991B874@CNBJMBX05.corpusers.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from cam-admin0.cambridge.arm.com ([217.140.96.50]:63179 "EHLO cam-admin0.cambridge.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752526Ab3EaLNh (ORCPT ); Fri, 31 May 2013 07:13:37 -0400 Content-Disposition: inline In-Reply-To: <35FD53F367049845BC99AC72306C23D1610991B874@CNBJMBX05.corpusers.net> Sender: linux-arch-owner@vger.kernel.org List-ID: To: "Wang, Yalin" Cc: 'richard -rw- weinberger' , "'linux-arch@vger.kernel.org'" , "'linux-kernel@vger.kernel.org'" , "'linux-arm-kernel@lists.infradead.org'" On Fri, May 31, 2013 at 12:02:49PM +0100, Wang, Yalin wrote: > Hi Will, > > I have merge your code , > But there is a different , > > + > + ct_user_exit I thought you didn't have ct_user_exit? In which case, just delete this line. > +#ifdef CONFIG_ALIGNMENT_TRAP > + ldr ip, __cr_alignment > + ldr ip, [ip] > + mcr p15, 0, ip, c1, c0 @ update control register > +#endif > > + enable_irq > + get_thread_info tsk Hard to tell without context. You can take a look at my git tree if you like (I fixed it up based on Nico's comment): https://git.kernel.org/cgit/linux/kernel/git/will/linux.git/commit/?h=misc-patches Will