From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751904Ab3KKCPI (ORCPT ); Sun, 10 Nov 2013 21:15:08 -0500 Received: from mx1.redhat.com ([209.132.183.28]:33422 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751003Ab3KKCPC (ORCPT ); Sun, 10 Nov 2013 21:15:02 -0500 Date: Mon, 11 Nov 2013 10:13:56 +0800 From: Dave Young To: "H. Peter Anvin" Cc: Matt Fleming , linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org, x86@kernel.org, mjg59@srcf.ucam.org, James.Bottomley@HansenPartnership.com, vgoyal@redhat.com, ebiederm@xmission.com, horms@verge.net.au, kexec@lists.infradead.org, bp@alien8.de Subject: Re: [patch 0/7 v2] kexec kernel efi runtime support Message-ID: <20131111021356.GC4407@dhcp-16-126.nay.redhat.com> References: <20131105082007.872550445@dhcp-16-126.nay.redhat.com> <20131108143118.GA22636@console-pimps.org> <20131109035739.GB4294@dhcp-16-126.nay.redhat.com> <527DC1BE.6030107@zytor.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <527DC1BE.6030107@zytor.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/08/13 at 09:01pm, H. Peter Anvin wrote: > On 11/08/2013 07:57 PM, Dave Young wrote: > > > > Hmm, if CONFIG_DEBUG_BOOT_PARAMS is not set, then kexec-tools should > > fail getting efi_info, so I will fix kexec-tools patch about this. > > > > Also CONFIG_EFI_RUNTIME_MAP should select CONFIG_DEBUG_BOOT_PARAMS. > > In future will try to move the boot params data out of debugfs. > > > > Honestly, if we need debugfs to get actual functionality, it shouldn't > be in sploit^Wdebugfs... > Huang Ying created the debugfs file for boot_params. His first version patch tried sysfs, but sysfs is not designed for such binary blobs so finally it go to debugfs. Any idea for this is welcome, till now I have no better idea for such kind of data. We should have another *fs instead of using debugfs. Thanks Dave