Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753755AbZIRPIw (ORCPT ); Fri, 18 Sep 2009 11:08:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751353AbZIRPIw (ORCPT ); Fri, 18 Sep 2009 11:08:52 -0400 Received: from an-out-0708.google.com ([209.85.132.247]:16679 "EHLO an-out-0708.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750855AbZIRPIv convert rfc822-to-8bit (ORCPT ); Fri, 18 Sep 2009 11:08:51 -0400 MIME-Version: 1.0 In-Reply-To: <4AB39EC3.4050202@nokia.com> References: <4AB39EC3.4050202@nokia.com> Date: Fri, 18 Sep 2009 18:08:55 +0300 Message-ID: Subject: Re: [PATCH 1/2] ARM: Pass IFSR register to do_PrefetchAbort() From: "Kirill A. Shutemov" To: Aaro Koskinen Cc: Aaro Koskinen , "linux-arm-kernel@lists.infradead.org" , Russell King , "linux-kernel@vger.kernel.org" , "Bityutskiy Artem (Nokia-D/Helsinki)" Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1065 Lines: 32 On Fri, Sep 18, 2009 at 5:52 PM, Aaro Koskinen wrote: > Hello, > > Kirill A. Shutemov wrote: >>> >>>  #ifdef CONFIG_CPU_PABRT_NOIFAR >>> -# ifdef CPU_PABORT_HANDLER >>> +# ifdef CPU_PABORT_HANDLER_IFAR >>>  #  define MULTI_PABORT 1 >>>  # else >>> -#  define CPU_PABORT_HANDLER(reg, insn)        mov reg, insn >>> +#  define CPU_PABORT_HANDLER_IFAR(reg, insn)   mov reg, insn >>> +#  define CPU_PABORT_HANDLER_IFSR(reg)         mrc p15, 0, reg, cr5, >>> cr0, 1 >> >> It's incorrect. We have IFSR only on ARMv7. > > It seems my assumption on the availability of that register was wrong, but I > think it's available at least on ARMv6, and also that IFAR can be > optional... I can't find anything in ARMv6-M Architecture Reference Manual by keywords "ifar" or "ifsr". > > A. > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/