Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965450Ab3E2Jeo (ORCPT ); Wed, 29 May 2013 05:34:44 -0400 Received: from mail-ie0-f181.google.com ([209.85.223.181]:61237 "EHLO mail-ie0-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965353Ab3E2Jen (ORCPT ); Wed, 29 May 2013 05:34:43 -0400 MIME-Version: 1.0 In-Reply-To: <20130529085426.GA13095@mudshark.cambridge.arm.com> References: <1369738100-11152-1-git-send-email-ratbert.chuang@gmail.com> <20130528130502.GA28971@mudshark.cambridge.arm.com> <51A4B938.7080708@ti.com> <20130528140705.GE28971@mudshark.cambridge.arm.com> <51A4FC08.3060906@ti.com> <20130529085426.GA13095@mudshark.cambridge.arm.com> From: Po-Yu Chuang Date: Wed, 29 May 2013 17:34:01 +0800 Message-ID: Subject: Re: [PATCH] ARM: map_init_section flushes incorrect pmd To: Will Deacon Cc: Sricharan R , "linux@arm.linux.org.uk" , "nico@linaro.org" , Catalin Marinas , "linux-kernel@vger.kernel.org" , "rob.herring@calxeda.com" , "linux-arm-kernel@lists.infradead.org" Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 947 Lines: 29 Hi Will, On Wed, May 29, 2013 at 4:54 PM, Will Deacon wrote: > On Wed, May 29, 2013 at 03:14:58AM +0100, Po-Yu Chuang wrote: >> Will, >> I guess nobody noticed this because the MMU of later v7 processors >> fetches page table >> from D-cache. It even doesn't need to clean pmd to PoU. > > It does if it's UP. The walker is only guaranteed to read from L1 if you > have the multiprocessing extensions. Ya, I see. > > As for this function, looks like it's ok because it has precisely one > caller, so it might be worth prefixing it with some underscores to make it > clear that nobody else should be calling it! I am fine with that. Should I create a new patch? Regards, Po-Yu -- 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/