Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932406AbWEBGqN (ORCPT ); Tue, 2 May 2006 02:46:13 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932411AbWEBGqM (ORCPT ); Tue, 2 May 2006 02:46:12 -0400 Received: from cantor.suse.de ([195.135.220.2]:41175 "EHLO mx1.suse.de") by vger.kernel.org with ESMTP id S932406AbWEBGqL (ORCPT ); Tue, 2 May 2006 02:46:11 -0400 To: Magnus Damm Cc: ebiederm@xmission.com, linux-kernel@vger.kernel.org Subject: Re: [PATCH] kexec: Avoid overwriting the current pgd (x86_64) References: <20060501095407.16902.78809.sendpatchset@cherry.local> From: Andi Kleen Date: 02 May 2006 08:45:59 +0200 In-Reply-To: <20060501095407.16902.78809.sendpatchset@cherry.local> Message-ID: User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.2 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 643 Lines: 13 Magnus Damm writes: > --===============82697867595349228== > > kexec: Avoid overwriting the current pgd (x86_64) > > This patch upgrades the x86_64-specific kexec code to avoid overwriting the > current pgd. Overwriting the current pgd is bad when CONFIG_CRASH_DUMP is used > to start a secondary kernel that dumps the memory of the previous kernel. Why is it bad? -Andi - 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/