From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756922Ab2IENrR (ORCPT ); Wed, 5 Sep 2012 09:47:17 -0400 Received: from mx1.redhat.com ([209.132.183.28]:59134 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751543Ab2IENrP (ORCPT ); Wed, 5 Sep 2012 09:47:15 -0400 Date: Wed, 5 Sep 2012 10:46:51 -0300 From: Flavio Leitner To: Yinghai Lu Cc: lkml , Ingo Molnar , WANG Cong , Tejun Heo , ianfang.cn@gmail.com, Andrew Morton Subject: Re: kexec/kdump kernel fails to start Message-ID: <20120905104651.64b40663@obelix.rh> In-Reply-To: References: <20120904143215.5bbbb2a4@obelix.rh> <20120904161737.358d51ad@obelix.rh> <20120904172639.0c2bfd6d@obelix.rh> <20120904183708.5f10fbde@obelix.rh> <20120904210114.1a30338a@obelix.rh> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 4 Sep 2012 18:15:25 -0700 Yinghai Lu wrote: > assume when we have good_end setting for 64 bit, page table for [4g, > TOMH) will be just under 512M, and later when first > first 2M lines changes, will push that page table range a little low, > and will make kdump not happy. > > BTW the first 2M change commit is useless should be reverted. because > even it is in 2M page mapping at first, later > kernel will change to 4k page. > > and with other change in this patchset, init_memory_mapping(0, > ISA_END_ADDR) will always make sure first 2M use 4K page. Hm, it's not clear to me. Are you going to push the patch reverting that commit and then your patchset? thank you! fbl