Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757260Ab2JJBIp (ORCPT ); Tue, 9 Oct 2012 21:08:45 -0400 Received: from mail-bk0-f46.google.com ([209.85.214.46]:33189 "EHLO mail-bk0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757246Ab2JJBIk (ORCPT ); Tue, 9 Oct 2012 21:08:40 -0400 MIME-Version: 1.0 In-Reply-To: <20121009160438.GG7639@phenom.dumpdata.com> References: <1349757558-10856-1-git-send-email-yinghai@kernel.org> <1349757558-10856-5-git-send-email-yinghai@kernel.org> <20121009160438.GG7639@phenom.dumpdata.com> Date: Tue, 9 Oct 2012 18:08:39 -0700 X-Google-Sender-Auth: g_yvzuGJ5TWRaHq-6jADp7BZ6c4 Message-ID: Subject: Re: [PATCH 04/10] x86, mm: Don't clear page table if next range is ram From: Yinghai Lu To: Konrad Rzeszutek Wilk Cc: Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Jacob Shin , Tejun Heo , Stefano Stabellini , linux-kernel@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 740 Lines: 18 On Tue, Oct 9, 2012 at 9:04 AM, Konrad Rzeszutek Wilk wrote: > How do we clean it wrongly? >> And it only happens when we are trying to map range one by one range separately. >> >> After we add checking before clearing the related page table, that panic will >> not happen anymore. > > So we do not clean the pages anymore. Is the cleaning of the pages > addressed somewhere? that is related calling sequence. old design assume: we should call that several times under 1G. -- 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/