Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751352AbWEZJTX (ORCPT ); Fri, 26 May 2006 05:19:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751356AbWEZJTX (ORCPT ); Fri, 26 May 2006 05:19:23 -0400 Received: from ebiederm.dsl.xmission.com ([166.70.28.69]:23209 "EHLO ebiederm.dsl.xmission.com") by vger.kernel.org with ESMTP id S1751352AbWEZJTW (ORCPT ); Fri, 26 May 2006 05:19:22 -0400 To: "Magnus Damm" Cc: "Gerd Hoffmann" , "Magnus Damm" , "Andrew Morton" , fastboot@lists.osdl.org, linux-kernel@vger.kernel.org Subject: Re: [Fastboot] [PATCH 03/03] kexec: Avoid overwriting the current pgd (V2, x86_64) References: <20060524044232.14219.68240.sendpatchset@cherry.local> <20060524044247.14219.13579.sendpatchset@cherry.local> <1148545616.5793.180.camel@localhost> <4476B0F6.2000708@suse.de> From: ebiederm@xmission.com (Eric W. Biederman) Date: Fri, 26 May 2006 03:18:15 -0600 In-Reply-To: (Magnus Damm's message of "Fri, 26 May 2006 18:02:19 +0900") Message-ID: User-Agent: Gnus/5.1007 (Gnus v5.10.7) Emacs/21.4 (gnu/linux) 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: 788 Lines: 22 "Magnus Damm" writes: > On 5/26/06, Gerd Hoffmann wrote: >> > 1a. The C-code in xen_machine_kexec() performs a hypercall. >> > >> > 1b. The hypervisor jumps to the assembly code. >> > After prepare we've created a NX-safe mapping for the control page. We >> > jump to that NX-safe address to transfer control to the assembly code. >> >> This is about kexec'ing the physical machine, not the virtual machine, >> right? > > Correct, kexec:ing from dom0. And staying in dom0? Or does Xen go away? Eric - 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/